Archive for the ‘computer’ tag
How to Program in Java
To program in Java, you need a "java compiler", a program to convert Java source code to bytecode. In the old days, the only option was Sun’s Java Development Kit; but now you have many options, including the GNU project’s gcj which creates class files or native executables, and jikes, IBM’s open source contribution. You also will need a Java virtual machine, which is a "machine within a machine" which understands Java bytecodes and translates them into machine language on the target processor. There are many available, but you can never go wrong with the javac compiler and java JRE virtual machine included with Sun’s Java standard edition.
1) Visit Sun’s J2SE page and download the correct package for your platform: typically Windows, Linux, or Solaris. Macintosh users will find they already have the J2SE installed. For maximum portability, it may be better to get an older edition; not all your potential users will have the latest JVM installed. Alternatively, use an open-source or other third-party compiler such as gcj or jikes, and compile to a native executable or run it with the Java JRE.
2) Learn to use a "clean" editor like Notepad++, Vim, or Emacs. These don’t taint your program source with formatting information, as does Microsoft Word. Whatever editor you use, it must have the option to save as "plain text".
3) Learn the basic edit-compile-test cycle:
- Create or edit the program source file(s).
- Compile to .class files.
- Run the program with the java executable, or as an applet in a browser. If the functionality isn’t correct, or you want to add more features, start again at step 1.
4) If you can afford it, buy a good book about Java programming and carefully read the beginning. With this language, the beginning is more difficult than later steps.
5) If you face any problems, always try a web search. There are a lot of good articles about Java on the web.
6) Don’t reinvent the wheel. Java was always about reusing open-source libraries. If you need something that is not very uncommon there’s usually a lib that helps you.
More information:
Heavyload–Test your computer’s endurance
Heavyload is a free program that offers an interesting way to test your computer’s endurance. Heavyload is a free application that allows the user to assess the endurance of his/her computer.
By pushing your system to the limit, Heavyload will show you how well your PC can handle stress. Heavyload will test the system and determine how well it can handle computing stress. In other words, the software will push the computer to its limits.
The program’s interface is cut down to the basics, which makes it easy to navigate. Heavyload comes with a simple user interface. This makes the software very easy to use.While it only has a few command icons, they’re well labeled, and they’re all that you need to conduct a successful test.
The software comes with few icons, however, these are properly labelled and so it is very easy to use the software. The program’s running graph shows your available memory and CPU usage, which comes in handy when using some of Heavyload’s other features.
The app will show the amount of RAM available and CPU usage in a graphical form. There are four different testing options, though the program does a poor job of differentiating them, so we left the default settings in place.
There are four different testing modes. However, it is advisable to stick to the default settings as that does the job done perfectly. Luckily, too, since our CPU usage chart instantly began to skyrocket. By quickly filling your RAM, hard disk, and operating system with test data,
Heavyload offers an easy and safe way to simulate conditions that could cause your computer to overheat or crash. Heavyload is freeware. It comes as a compressed file. This program is practical and simple to operate, and we recommend it.
