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310-055 exam Dumps Source : Sun Certified Programmer for the Java 2 Platform, benchmark Edition 5.0
Test Code : 310-055
Test name : Sun Certified Programmer for the Java 2 Platform, benchmark Edition 5.0
Vendor name : SUN
: 581 existent Questions
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SUN Sun Certified Programmer for
KYOTO, Japan, Feb. 6, 2019 /PRNewswire/ -- instant contraptions fitted with the fresh alien wireless verbal exchange specification Wi-solar FAN (container belt network) for the web of things developed collectively via the analysis community of Professor Hiroshi Harada of the Graduate school of Informatics, Kyoto institution (hereinafter Kyoto college), Nissin techniques Co., Ltd. (hereinafter Nissin programs), and ROHM Co., Ltd. (hereinafter ROHM) grew to become probably the most world's first options to obtain Wi-solar FAN certification.
BackgroundIn order to know outside communique networks corresponding to sensible cities and wise grids, brilliant, lengthy-distance and comfy network know-how is required. Wi-solar FAN is a fresh specification of Wi-solar, an international radio communications assignment it really is the most advantageous impeccable to the construction of IoTs. it's an interoperable communications networking method for electricity, gasoline, and water metering, as well as for sensible cities and wise grids in a variety of applications akin to infrastructure and ingenious transport techniques.
This Wi-solar FAN is an interoperable low-vigour IoT instant conversation know-how that makes utilize of low-energy instant transmission know-how in line with the IEEE 802.15.4g medium and multistage routing know-how in keeping with IPv6. On may 16, 2016, the Wi-solar Alliance, which certifies wireless conversation necessities for IoTs, technical compatibility, and interconnectivity, established common requirements, and on November 11, 2016, the three parties introduced that they succeeded in primary radio developments suitable with Wi-sun FAN. The Wi-solar Alliance then announced its Wi-solar FAN certification application on October 3, 2018.
This achievementBased on the results of the basic construction of Wi-solar FAN, the three parties developed a radio suitable with Wi-sun FAN technical standards and certification software, and handed an IP-primarily based certification verify the usage of multi-hop, frequency-hopping, and superior certification protection by using a plurality of different radios from different organizations. This radio has privilege here functions as described in the Wi-sun FAN Technical requirements.
actual layer and MAC layer corresponding to IEEE 802.15.4/4g/4e required for operation in Japan
Adaptation layer, network layer, and transport layer based by means of IETF comparable to 6LowPAN and IPv6
Multi-hop conversation device the utilize of RPL
RADIUS/AAA high-stage protection
p>With the IEEE802.15.4/4g/4e technologies able to tough transmission over 1km below the jap rules, this radio is equipped with a world usual for web access, which has been delivered in Wi-Fi (TM) programs, and a multi-hop alien commonplace that realizes multi-stage relay between radios in keeping with IP. This makes it convenient to connect sensors, meters, and monitors that effect up smart cities and wise metering to the cyber web.
This success become carried out in the Impulsing Paradigm trade through Disruptive technologies program (impact) led via the Council for Science, technology and Innovation, the cabinet office. This software become fashioned by a joint industry-academia consortium referred to as the next-generation Wi-solar Joint research Consortium, Kyoto. The three parties, based in Kyoto, are Kyoto college, which acquire a song record of standardization and evolution of IEEE 802.15.4/4g/4e, Nissin systems, which commercializes Wi-sun-compatible conversation middleware, and ROHM, which develops communication modules suitable with the standard.
define of certification acquisition:Date and time of certification acquisition: January 30, 2019Certification authority: Wi-solar AllianceCertified trying out laboratory: Allion Labs, Inc.Certification quantity: WSA 0171
Future developmentIn the long run, the three events will participate in an interoperability specification verification adventure sponsored by the Wi-solar Alliance to effect a contribution to testing for technical conformity and interoperability of the Wi-sun FAN usual, and to advertise further construction as business-academia cooperation projects in Kyoto with the intent to implement this radio in society. The outcomes were furthermore displayed on the Wi-sun Alliance booth in DistribuTECH 2019, the greatest punch industry-related event in the u.s., which was held in fresh Orleans on February 5.
further particulars are available at:http://www.dco.cce.i.kyoto-u.ac.jp/en/PL/PL_2019_01.html
View fashioned content:http://www.prnewswire.com/news-releases/kyoto-institution-teaming-with-2-jap-agencies-acquires-world-first-certification-for-wireless-conversation-specification-wi-solar-fan-300790447.html
supply Kyoto university; Nissin methods Co., Ltd.; ROHM Co., Ltd.
Copyright (C) 2019 PR Newswire. indecent rights reserved
No outcomes discovered, are trying fresh keyword!dedicated to the Wi-solar program, Cisco has contributed multiple check mattress gadgets for the Wi-solar FAN certification software. Itron: The Wi-sun FAN licensed Itron Bridge5-WS is a key participate of the Itro...
ATLANTA, Oct. 1, 2018 /PRNewswire/ -- Landis+Gyr (SWISS: LAND.SW) introduced its pilot for the Wi-sun FAN Certification program launched by the Wi-sun Alliance previous these days. As a Promoter Member of the Wi-sun Alliance that holds a Board of administrators place, Landis+Gyr joins different member companies in advertising the implementation of open, standards-based container enviornment community (FAN) and the internet of things (IoT).
Utilities acquire utilized container belt networks to deliver insurance for communicating assets similar to smart meters, sensors and automation instruments throughout their service territory. With the growth in sensible city functions, common specifications for FAN connectivity will broaden the decisions obtainable for purposes and devices capable of live a participate of the community.
Wi-sun's FAN Certification application will give compliance trying out of community components and contraptions to a communications profile developed from applicable open necessities and certify the product's faculty to interoperate.
"Landis+Gyr strongly supports this certification endeavor for the long avoid price it is going to add for utility grid modernization and IoT classes," spoke of Marius Chilom, Senior vice chairman and Chief expertise Officer of options for Landis+Gyr. "The superior the interoperability, the extra efficient these networks should live for the next wave of sensible grid and sensible city applications."
"Certification ensures interoperability, which is essential to the growth of IoT innovation," mentioned Phil Beecher, President and CEO, Wi-solar Alliance. "we are pleased to officially launch the FAN Certification software and are excited for the first wave of FAN-certified products to live deployed into the market starting Q1 2019."
The certification program will ensure utilities, cities and repair suppliers acquire access to adaptable, multi-carrier networks that allows you to wait on live confident interoperability into the future. other key merits for community operators consist of:
less difficult evaluation of fresh items, as conduct, efficiency and interoperability are well-defined.
more option of products and companies.
Encourages global evolution of standards-based mostly items, decreasing the risk and dear repercussion of stranded assets.
All Wi-sun certified items are rigorously verified by a Wi-solar appointed third-birthday party test lab to ensure the contraptions labor collectively with ease and securely for quick time to market. licensed devices encompass a digital certificates to authenticate entry to a Wi-sun FAN, tremendously reducing vulnerability to cyber protection threats. below a separate agreement, Wi-sun Alliance has appointed GlobalSign as the third-party organisation of digital certificates for the Wi-solar FAN certification program.
About Landis+GyrLandis+Gyr is the leading global provider of integrated energy administration options for the utility sector. offering one of the crucial broadest portfolios of items and functions to maneuver complicated trade challenges, the enterprise offers finished solutions for the groundwork of a smarter grid, including wise metering, distribution network sensing and automation tools, load control, analytics and power storage. Landis+Gyr operates in over 30 countries throughout 5 continents. With earnings of approximately USD 1.7 billion, the enterprise employs c. 6,000 people with the sole mission of assisting the world manage power more suitable. more counsel is attainable at www.landisgyr.com.
in regards to the Wi-sun AllianceThe Wi-solar Alliance is a world non-profit member-based affiliation made of trade leading corporations. Its mission is to pressure the world proliferation of interoperable instant solutions for utilize in smart cities, wise grids and other internet of issues (IoT) applications using open international specifications from companies, such as IEEE802, IETF, TIA, TTC and ETSI. With greater than one hundred eighty participants global, membership of the Wi-solar Alliance is open to indecent industry stakeholders and includes silicon companies, product carriers, services suppliers, utilities, universities, enterprises and municipalities and native govt organizations.For more tips, gratify visit: www.wi-sun.org.
Wi-solar Alliance and the Wi-sun Alliance emblem are emblems of the Wi-sun Alliance.
View common content material:https://www.prnewswire.com/news-releases/landisgyr-helps-lead-wi-sun-alliances-fan-certification-application-for-massive-scale-iot-communique-networks-300721548.html
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This chapter explains what Android is, how and why it was developed, and where the platform fits in to the established mobile marketplace.
This chapter is from the bespeak
The mobile evolution community is at a tipping point. Mobile users exact more choice, more opportunities to customize their phones, and more functionality. Mobile operators want to provide value-added content to their subscribers in a manageable and lucrative way. Mobile developers want the freedom to develop the powerful mobile applications users exact with minimal roadblocks to success. Finally, handset manufacturers want a stable, secure, and affordable platform to power their devices. Upuntil now single mobile platform has adequately addressed the needs of indecent the parties.
Enter Android, which is a potential game-changer for the mobile evolution community. An innovative and open platform, Android is well positioned to address the growing needs of the mobile marketplace.
This chapter explains what Android is, how and why it was developed, and where the platform fits in to the established mobile marketplace.
To understand what makes Android so compelling, they must examine how mobile evolution has evolved and how Android differs from competing platforms.
Way Back When
Remember route back when a phone was just a phone? When they relied on fixed landlines? When they ran for the phone instead of pulling it out of their pocket? When they lost their friends at a crowded ballgame and waited around for hours hoping to reunite? When they forgot the grocery list (Figure 1.1) and had to find a payphone or drive back home again?
Figure 1.1 Mobile phones acquire become a crucial shopping accessory.
Those days are long gone. Today, commonplace problems relish these are easily solved with a one-button hasten dial or a simple text message relish “WRU?” or “20?” or “Milk and?”
Our mobile phones retain us safe and connected. Nowadays, they roam around freely, relying on their phones not only to retain in finger with friends, family, and coworkers, but furthermore to uncover us where to go, what to do, and how to conclude it. Even the most domestic of events seem to revolve around my mobile phone.
Consider the following true, but slightly enhanced for effect, story:
Once upon a time, on a warm summer evening, I was happily minding my own business cooking dinner in my fresh house in rustic fresh Hampshire when a bat swooped over my head, scaring me to death.
The first thing I did—while ducking—was drag out my cell and dispatch a text message to my husband, who was across the country at the time: “There’s a bat in the house!”
My husband did not immediately respond (a divorce-worthy incident, I thought at the time), so I called my Dad and asked him for suggestions on how to collect rid of the bat.
He just laughed.
Annoyed, I snapped a picture of the bat with my phone and sent it to my husband and my blog, simultaneously guilt-tripping him and informing the world of my treacherous domestic wildlife encounter.
Finally, I Googled “get rid of a bat” and followed the helpful do-it-yourself instructions provided on the Web for people in my situation. I furthermore erudite that late August is when baby bats often leave the roost for the first time and learn to fly. Newly awake that I had a baby bat on my hands, I calmly got a broom and managed to herd the bat out of the house.
Problem solved—and I did it indecent with the wait on of my trusty cell phone, the traditional LG VX9800.
My point here? Mobile phones can solve just about anything—and they rely on them for everything these days.
You notice that I used half a dozen different mobile applications over the course of this story. Each application was developed by a different company and had a different user interface. Some were well designed; others not so much. I paid for some of the applications, and others came on my phone.
As a user, I organize the taste functional, but not terribly inspiring. As a mobile developer, I wished for an break to create a more seamless and powerful application that could maneuver indecent I’d done and more. I wanted to build a better bat trap, if you will.
Before Android, mobile developers faced many roadblocks when it came to writing applications. building the better application, the unique application, the competing application, the hybrid application, and incorporating many common tasks such as messaging and calling in a confidential route were often unrealistic goals.
To understand why, let’s pick a brief keep at the history of mobile software development.
The Motorola DynaTAC 8000X was the first commercially available cell phone. First marketed in 1983, it was 13 x 1.75 x 3.5 inches in dimension, weighed about 2.5 pounds, and allowed you to talk for a microscopic more than half an hour. It retailed for $3,995, plus hefty monthly service fees and per-minute charges.
We called it “The Brick,” and the nickname stuck for many of those early mobile phones they alternatively loved and hated. About the size of a brick, with a battery power just long enough for half a conversation, these early mobile handsets were mostly seen in the hands of traveling business execs, security personnel, and the wealthy. First-generation mobile phones were just too expensive. The service charges alone would bankrupt the medium person, especially when roaming.
Early mobile phones were not particularly complete featured. (Although, even the Motorola DynaTAC, shown in pattern 1.2, had many of the buttons we’ve approach to know well, such as the SEND, END, and CLR buttons.) These early phones did microscopic more than effect and receive calls and, if you were lucky, there was a simple contacts application that wasn’t impossible to use.
Figure 1.2 The first commercially available mobile phone: the Motorala DynaTAC.
These first-generation mobile phones were designed and developed by the handset manufacturers. Competition was fierce and trade secrets were closely guarded. Manufacturers didn’t want to expose the internal workings of their handsets, so they usually developed the phone software in-house. As a developer, if you weren’t participate of this inner circle, you had no break to write applications for the phones.
It was during this epoch that they saw the first “time-waster” games commence to appear. Nokia was famed for putting the 1970s video game Snake on some of its earliest monochrome phones. Other manufacturers followed, adding games relish Pong, Tetris, and Tic-Tac-Toe.
These early phones were flawed, but they did something important—they changed the route people thought about communication. As mobile phone prices dropped, batteries improved, and reception areas grew, more and more people began carrying these handy devices. Soon mobile phones were more than just a novelty.
Customers began pushing for more features and more games. But, there was a problem. The handset manufacturers didn’t acquire the motivation or the resources to build every application users wanted. They needed some route to provide a portal for entertainment and information services without allowing direct access to the handset.
And what better route to provide these services than the Internet?
Wireless Application Protocol (WAP)
It turned out allowing direct phone access to the Internet didn’t scale well for mobile.
When the first clamshell phone, the Motorola StarTAC, was released in 1996, it merely had a LCD 10-digit segmented display. (Later models would add a dot-matrix type display.) Meanwhile, Nokia released one of the first slider phones, the 8110—fondly referred to as “The Matrix Phone,” as the phone was heavily used in films. The 8110 could parade four lines of text with 13 characters per line. pattern 1.3 shows some of the common phone form factors.
Figure 1.3 Various mobile phone form factors: the candy bar, the slider, and the clamshell.
With their postage stamp-sized low-resolution screens and limited storage and processing power, these phones couldn’t maneuver the data-intensive operations required by traditional Web browsers. The bandwidth requirements for data transmission were furthermore costly to the user.
The Wireless Application Protocol (WAP) benchmark emerged to address these concerns. Simply put, WAP was a stripped-down version of HTTP, which is the backbone protocol of the Internet. Unlike traditional Web browsers, WAP browsers were designed to avoid within the reminiscence and bandwidth constraints of the phone. Third-party WAP sites served up pages written in a markup language called Wireless Markup Language (WML). These pages were then displayed on the phone’s WAP browser. Users navigated as they would on the Web, but the pages were much simpler in design.
The WAP solution was powerful for handset manufacturers. The pressure was off—they could write one WAP browser to ship with the handset and rely on developers to approach up with the content users wanted.
The WAP solution was powerful for mobile operators. They could provide a custom WAP portal, directing their subscribers to the content they wanted to provide, and rake in the data charges associated with browsing, which were often high.
Developers and content providers didn’t deliver. For the first time, developers had a chance to develop content for phone users, and some did so, with limited success.
Most of the early WAP sites were extensions of accepted branded Web sites, such as CNN.com and ESPN.com, looking for fresh ways to extend their readership. Suddenly phone users accessed the news, stock market quotes, and sports scores on their phones.
Commercializing WAP applications was difficult, and there was no built-in billing mechanism. Some of the most accepted commercial WAP applications that emerged during this time were simple wallpaper and ringtone catalogues, allowing users to personalize their phones for the first time. For example, the users browsed a WAP site and requested a specific item. They filled out a simple order form with their phone number and their handset model. It was up to the content provider to deliver an image or audio file compatible with the given phone. Payment and verification were handled through various premium-priced delivery mechanisms such as Short Message Service (SMS), Enhanced Messaging Service (EMS), Multimedia Messaging Service (MMS), and WAP Push.
WAP browsers, especially in the early days, were leisurely and frustrating. Typing long URLs with the numeric keypad was onerous. WAP pages were often difficult to navigate. Most WAP sites were written once for indecent phones and did not account for individual phone specifications. It didn’t matter if the end-user’s phone had a tremendous color screen or a postage stamp-sized monochrome one; the developer couldn’t tailor the user’s experience. The result was a mediocre and not very compelling taste for everyone involved.
Content providers often didn’t bother with a WAP site and instead just advertised SMS short codes on TV and in magazines. In this case, the user sent a premium SMS message with a request for a specific wallpaper or ringtone, and the content provider sent it back. Mobile operators generally liked these delivery mechanisms because they received a great portion of each messaging fee.
WAP fell short of commercial expectations. In some markets, such as Japan, it flourished, whereas in others, relish the United States, it failed to pick off. Handset screens were too diminutive for surfing. Reading a sentence fragment at a time, and then waiting seconds for the next segment to download, ruined the user experience, especially because every second of downloading was often charged to the user. Critics began to convene WAP “Wait and Pay.”
Finally, the mobile operators who provided the WAP portal (the default home page loaded when you started your WAP browser) often restricted which WAP sites were accessible. The portal allowed the operator to restrict the number of sites users could browse and to funnel subscribers to the operator’s preferred content providers and exclude competing sites. This kind of walled garden approach further discouraged third-party developers, who already faced difficulties in monetizing applications, from writing applications.
Proprietary Mobile Platforms
It came as no dumbfound when users wanted more—they will always want more.
Writing robust applications such as graphic-intensive video games with WAP was nearly impossible. The 18-year-old to 25-year-old sweet-spot demographic—the kids with the disposable income most likely to personalize their phones with wallpapers and ringtones—looked at their portable gaming systems and asked for a device that was both a phone and a gaming device or a phone and a music player. They argued that if devices such as Nintendo’s Game Boy could provide hours of entertainment with only five buttons, why not just add phone capabilities? Others looked to their digital cameras, Palms, Blackberries, iPods, and even their laptops and asked the very question. The market seemed to live teetering on the edge of device convergence.
Memory was getting cheaper; batteries were getting better; and PDAs and other embedded devices were dawn to avoid compact versions of common operating systems such as Linux and Windows. The traditional desktop application developer was suddenly a player in the embedded device market, especially with Smartphone technologies such as Windows Mobile, which they organize familiar.
Handset manufacturers realized that if they wanted to continue to sell traditional handsets, they needed to change their protectionist policies pertaining to handset design and expose their internal frameworks, at least, to some extent.
A variety of different proprietary platforms emerged—and developers are silent actively creating applications for them. Some Smartphone devices ran Palm OS (now Garnet OS) and RIM Blackberry OS. Sun Microsystems took its accepted Java platform and J2ME emerged (now known as Java Micro Edition [Java ME]). Chipset maker Qualcomm developed and licensed its Binary Runtime Environment for Wireless (BREW). Other platforms, such as Symbian OS, were developed by handset manufacturers such as Nokia, Sony Ericsson, Motorola, and Samsung. The Apple iPhone OS (OS X iPhone) joined the ranks in 2008. pattern 1.4 shows several different phones, indecent of which acquire different evolution platforms.
Figure 1.4 Phones from various mobile device platforms.
Many of these platforms acquire associated developer programs. These programs retain the developer communities small, vetted, and under contractual agreements on what they can and cannot do. These programs are often required and developers must pay for them.
Each platform has benefits and drawbacks. Of course, developers adore to debate over which platform is “the best.” (Hint: It’s usually the platform we’re currently developing for.)
The truth is no one platform has emerged victorious. Some platforms are best suited for commercializing games and making millions—if your company has brand backing. Other platforms are more open and suitable for the hobbyist or plumb market applications. No mobile platform is best suited for indecent workable applications. As a result, the mobile phone has become increasingly fragmented, with indecent platforms sharing participate of the pie.
For manufacturers and mobile operators, handset product lines became complicated fast. Platform market penetration varies greatly by region and user demographic. Instead of choosing just one platform, manufacturers and operators acquire been forced to sell phones for indecent the different platforms to compete. We’ve even seen some handsets supporting multiple platforms. (For instance, Symbian phones often furthermore back J2ME.)
The mobile developer community has become as fragmented as the market. It’s nearly impossible to retain track of indecent the changes in the market. Developer specialty niches acquire formed. The platform evolution requirements vary greatly. Mobile software developers labor with distinctly different programming environments, different tools, and different programming languages. Porting among the platforms is often costly and not straightforward. Keeping track of handset configurations and testing requirements, signing and certification programs, carrier relationships, and application marketplaces acquire become involved spin-off businesses of their own.
It’s a nightmare for the ACME Company wanting a mobile application. Should they develop a J2ME application? BREW? iPhone? Windows Mobile? Everyone has a different kind of phone. ACME is forced to pick one or, worse, indecent of the above. Some platforms allow for free applications, whereas others conclude not. plumb market application opportunities are limited and expensive.
As a result, many wonderful applications acquire not reached their desired users, and many other powerful ideas acquire not been developed at all.
Introduction to Java Programming Language
Java is a general-purpose, object-oriented programming language designed for the evolution of software for consumer electronic devices, such as TVs, VCRs, toasters, etc.
Java is a platform neutral language, which means that it is not tied to any particular hardware or operating system. It guarantees users to ‘write once, avoid anywhere.' The Java language is supported by almost every operating system, such as Sun Solaris, RedHat, Windows, etc.
The Java programming language was developed by Sun Microsystems of the USA in 1991, it was originally called Oak by James Gosling, who was one of the inventors of the language. The main goal for the developers was to effect the language highly reliable, portable and simple.
The team for the evolution of Java language included Patrick Naughton, who discovered that the existing languages such as C and C++ had some major drawbacks in terms of reliability and portability. They modeled the fresh language Java on C and C++, while removing some features that they considered constraints. This made Java a really simple, portable, and powerful language. To learn Java basics, let’s revise the Java syntax.
The History of Java
There is a chronicle of events that occurred during the course of evolution of the Java language.
1990: A team of Sun Microsystems programmers decided to develop a special software to maneuver consumer electronic devices. The team headed by James Gosling.
1991: The team studied various languages present at that time, viz., C, and C++, and announced the fresh language to live “Oak.”
1992: The team at Sun, known as the Green Project, demonstrated the application of their fresh language, for example, to control a list of home appliances using a hand device with the tiny touchscreen.
1993: The World Wide Web came to the Internet and transformed the text-based Internet into a graphical, rich environment. The Green Project team came up with an concept of developing Web applets (tiny programs) that could avoid on indecent types of computers connected to the Internet.
1994: The team developed a web browser called “HotJava” to locate and avoid applet programs on the Internet. This made it immensely accepted amongst Internet users.
1995: Oak was renamed as “Java,” due to some legal snags. Java is the name and not an acronym.
1996: Java programming was established as the leader for Internet programming and furthermore as a general-purpose, object-oriented programming language. Sun released the Java evolution Kit 1.0.
1997: Sun releases the Java evolution Kit 1.1 (JDK 1.1)
1998: Sun releases Java 2 with version 1.2 of the Software evolution Kit (SD K 1.2)
1999: Sun releases the Java 2 platform, benchmark Edition (J2SE), and Enterprise Edition (J2EE)
2000: Sun releases J2SE with SDK 1.3.
2002: Sun releases J2SE with SDK 1.4.
2004: This marked the release of J2SE with JDK 5.0 (instead of JDK 1.5), known as J2SE 5.0.
2006- Sun releases Java SE 6.
2011: Sun releases Java SE 7.
2014: Sun releases Java SE 8.
2017: Sun releases Java SE 9.
Features of Java Programming
The main goal was to design a language that could tender solutions to problems encountered in modern programming. The goal was for the language to live reliable, portable, and distributed, and at the very time, it needed to live simple, compact, and interactive.
Compiled and Interpreted
Java language combines both of these approaches, thus making Java a two-stage system. This approach was never offered before, as any language before was either compiled or interpreted.
Firstly, the Java compiler translates source code into bytecode instructions; bytecodes are not machine instructions.
Secondly, the Java interpreter generates machine code that can live directly executed by the machine that is running the Java program.
Independent and Portable
Java programs can live easily moved from one system to another, anywhere and anytime. With changes or an upgrade in the operating system, processors and system resources will not coerce any changes in Java programs.
Java programming ensures portability in two ways. Firstly, Java compiler generates bytecode instructions that can live implemented on any machine, and secondly, the size of the primitive data types are machine independent.
Almost everything in Java language is an object, which makes it a moral object-oriented language. indecent program code and data reside within objects and classes. Java comes with an extensive set of classes that are arranged in packages, which can live used in program inheritance.
Robust and Secure
Java provides many safeguards to ensure dependable code. It has strict run-time, checking for data types. It is designed relish a garbage collected language, i.e., it captures chain errors and eliminates any risk of crashing the system.
Java systems verify indecent the reminiscence access and, thus, ensure that no virus is communicated with an applet.
Java programming facilitates both the sharing of data and programs. Java applications can open and access remote objects on the Internet as easily as on any local system.
Simple, Small, and Familiar
Java is a simplified version of C++, which is why it is confidential and yet different as it eliminates indecent the redundant and unreliable code. For example, Java does not utilize pointers, preprocessor header files, and many others. It furthermore eliminates operator overloading and multiple inheritances in Java.
Multithreaded and Interactive
Multithreaded means handling different tasks simultaneously. Java language supports multithreaded programs, which means that they need not acquire to wait for one task to finish for another to start. This feature of Java greatly improves the interactive performance of graphical applications.
Java programming performance is very impressive, considering the fact that is an interpreted language, mainly because of the bytecodes. Java architecture is designed to reduce overheads.
Dynamic and Extensible
Java is a dynamic language; it is capable of dynamically linking in fresh class libraries, methods, and objects. It can furthermore determine the type of class through a query.
Ease of Development
Java 2 benchmark edition (J2SE) 5.0 supports features such as Generics, Enhanced for loop, Autoboxing or unboxing, Typesafe enums, varargs, Static import, and Annotation. These Java features effect it simple for Java programmers by shifting the responsibility of creating the reusable code to the compiler, and also, the resulting code is free from bugs.
Scalability and Performance
J2SE 5.0 improves the startup time and reduces the amount of reminiscence used in the Java 2 runtime environment. Learn more features of Java here.
Comparison: C Vs. Java Vs. C++
C Vs. Java
The major contrast between C and Java is that Java is an object-oriented language and has a mechanism to define classes and objects in Java. The features of C that are not included in Java are:
No unique statement keywords of C size and typedef
No data types, such as struct and union.
Java does not define the type modifier keywords, such as auto, extern, register, signed and unsigned.
No back for the pointertype
Non-availability of preprocessor
Java requires that the function with no dispute must live declared with bare parenthesis and with the void keyword.
New Java operators, such as instanceof and >>>.
Java programming has labeled split and continue statements.
Java Vs. C++
The main contrast between C++ and Java is that Java is a moral object-oriented language while C++ just adds an object-oriented extension to C. The increment operator in C++ indicates the very thing.
The features listed below are intentionally omitted from Java to effect it better.
No back for operator overloading.
No template classes as in C++.
A fresh feature called “interface” in Java programming that does not back multiple inheritances.
Java language does not back global variables.
Java uses a finalize() function instead of the destructor function.
There are no header files in Java programming.
Let’s discuss Java Regular Expression and Java Array here.
Java Language and the Internet
Java is often called the "Internet language" because the first application program written in Java was HotJava, a web browser used to avoid applets on the Internet. Internet users can utilize Java to create applets and avoid them locally using HotJava. A Java-enabled browser to download an applet located anywhere on the Internet can furthermore live used.
Java applets acquire made the Internet a moral extension of the storage system on local computers. Internet users can furthermore set up their websites containing Java applets that could live used by remote users.
Java Programming and World Wide Web
World Wide Web (www) is an information retrieval system where any information or file is identified as Uniform source Locators (URLs) and are interlinked via hypertext links. WWW can live accessed with the wait on of internet.
Internet and Java programming both had the very philosophy, and thus, they were incorporated with each other easily. Java made it workable for the World Wide Web to back animation, graphics, games, and a wide scope of special effects.
To communicate with any web page, Java uses APPLETs. The steps involved are:
The user requests for a hyperlink document to remote computer’s web server. (a web server receives, processes, and sends the requested document)
The document contains the APPLET tag, which identifies the applet.
Java source code file compiles the bytecode for that applet, which is then transferred to user’s computer.
The browser is enabled by Java and then interprets the bytecode and provides the output.
Java back Systems
The operations of Java and Java-enabled browsers on the Internet require a variety of back systems, namely:
HTML— a language for creating hypertext for the web
Proxy Server — an intermediate server between the requesting client workstation and the original server
The Java Environment
The Java environment includes a large number of Java development tools and Java classes and methods.
The Java evolution tools are participate of the system known as the Java evolution Kit (JDK), and the classes and the methods in Java are a participate of the Java benchmark Library (JSL), furthermore known as the Application Programming Interface (API).
Java evolution Kit (JDK)
The Java evolution Kit includes:
appletviewer (for viewing Java applets)
javac ( Java compiler)
java ( Java interpreter )
javap ( Java disassembler )
javah ( for C header files)
javadoc ( for creating HTML files )
jdb ( Java debugger )
Application Programming Interface
The Java benchmark Library includes classes and packages, some most commonly used packages are the Language back Packages. This is a collection of Java classes and methods required for implementing basic features of Java.
Utility Package — To provide Java utility functions
Input/output Package — For Java input/output manipulation
Networking Package — For communicating via the Internet
AWT Package — The abstract window toolkit package contains classes that implement a platform-independent, graphical user interface.
Applet Package — this allows us to create Java applets.
Java Runtime Environment
The java Runtime Environment facilitates the execution of Java programs, comprising the Java Virtual Machine (JVM). The JVM interprets the intermediate Java bytecode and generates the desired output.
Runtime class libraries — These are a set of core Java class libraries for execution of the Java program.
User interface toolkits — These are used for interaction with the Java application program.
1) Java plugin — This enables the execution of a Java applet.
2) Java Web start — This enables an application to directly launch from the web browser without installing. Learn more about Java Datatypes and Java Modifiers here.
Constructs are basically reserved keywords in any language, which cannot live used in comfort of the programs, i.e., a name of variables in Java, class, or method. Java has around 50 such words, they include:
Finally, In this Java guide, they erudite about the history of Java programming language, important Java features, how Java is different from C and C++, how it is incorporated in World Wide Web with wait on of Web browsers, and the environment required for running Java applications. Hope this helps. Let us know what you reason in the coments below!
Startup Atomist hopes to revolutionize evolution automation throughout the application lifecycle, before traditional...
application release automation vendors ensnare on.
Development automation has been the fleeting goal of a generation of tools, particularly DevOps tools, that vow continuous integration and continuous delivery. The latest is Atomist and its evolution automation platform, which aims to automate as many of the mundane tasks as workable in the DevOps toolchain.
Atomist ingests information about an organization's software projects and processes to build a comprehensive understanding of those projects. Then it creates automations for the environment, which utilize programming tools such as parser generators and microgrammars to parse and contextualize code.
The system furthermore correlates event streams pulled from various stages of evolution and represents them as code in a graph database known as the Cortex. Because Atomist's founders said they believe the CI pipeline model falls short, Atomist takes an event-based approach to model everything in an organization's software delivery process as a stream of events. The event-driven model furthermore enables evolution teams to compose evolution flows based on events.
In addition, Atomist automatically creates Git repositories and configures systems for issue tracking and continuous integration, and creates chat channels to consolidate notifications on the project and delivered information to the privilege people.
"Atomist is an enchanting and analytic progression of DevOps toolchains, in that it can traverse events across a wide variety of platforms but present them in a mode such that developers don't need to context switch," said Stephen O'Grady, principal analyst at RedMonk in Portland, Maine. "Given how many pathetic parts are involved in DevOps toolchains, the integrations are welcome."
Mik Kersten, a leading DevOps guru and CEO at Tasktop Technologies, has tried Atomist firsthand and calls it a fundamentally fresh approach to manage delivery. As these become increasingly complex, the sources of blow trail well beyond the code and into the tools spread across the delivery pipeline, Kersten noted.
The climb of microservices, and tens or hundreds of services in their environments, interpose concern spots as developers collaborate, deploy and monitor the lifecycle of these hundreds of services, Johnson said.
This is particularly distinguished for security, where keeping services consistent is paramount. In last year's Equifax breach, hackers gained access through an unpatched version of Apache Struts -- but with Atomist, an organization can identify and upgrade traditional software automatically across potentially hundreds of repositories, Johnson said.
Atomist represents a fresh class of DevOps product that goes beyond CI, which is "necessary, but not sufficient," said Rod Johnson, Atomist CEO and creator of the Spring Framework.
Tasktop's Kersten agreed that approach to developer-centric automation "goes route beyond what they got with CI." The company created a Slack bot that incorporates Atomist's automation facilities, driven by a evolution automation engine that is reminiscent of model-driven evolution or aspect-oriented programming, but provides generative facilities not only of code but across projects resources and other tools, Kersten said. A notification system informs users what the automations are doing.
Most importantly, Atomist is fully extensible, and its entire internal data model can live exposed in GraphQL.
Tasktop has already explored ways to connect Atomist to Tasktop's Integration Hub and the 58 Agile and DevOps tools it currently supports, Kersten said.
Automation built into development
As DevOps becomes more widely adopted, integrating automation into the entire DevOps toolchain is critical to wait on streamline the evolution process so programmers can develop faster, said Edwin Yuen, an analyst at Enterprise Strategy Group in Milford, Mass.
The market to integrate automation and evolution will grow, as both the companies that utilize DevOps and the number of applications they develop increase. Edwin Yuenanalyst, Enterprise Strategy Group
"The market to integrate automation and evolution will grow, as both the companies that utilize DevOps and the number of applications they develop increase," he said. Atomist's integration in the code creation and deployment process, through release and update management processes, "enables automation not just in the evolution process but furthermore in day two and beyond application management," he said."
Atomist joins other approaches such as GitOps and Bitbucket Pipelines that target the developer who chooses the tools used across the complete lifecycle, said Robert Stroud, an analyst at Forrester Research in Cambridge, Mass.
"Selection of tooling such as Atomist will drive developer productivity allowing them to focus on code, not pipeline evolution -- this is advantageous for DevOps adoption and acceleration," he said. "The challenge for these tools is although fresh code fits well, deployment solutions are selected within enterprises by Ops teams, and furthermore need to back on-premises deployment environments."
For that reason, keep for traditional application release automation vendors, such as IBM, XebiaLabs and CA Technologies, to deliver features similar to Atomist's capabilities in 2018, Stroud said.