You can compile and run a java file using the command prompt or shell (if you are using Linux ). It doesn’t depend if you have to copy your java file to the desktop, it can be run from anywhere provided that you set your java path in the PATH vari.

• Latest Version:

  BlueJ 4.2.2 LATEST

• Requirements:

  Windows XP / Vista / Windows 7 / Windows 8 / Windows 10

• Author / Product:

  Michael Kolling / BlueJ

• Old Versions:

• Filename:

  BlueJ-windows-422.msi

• Details:

  BlueJ 2020 full offline installer setup for PC 32bit/64bit

BlueJ for Windows is a development environment that allows you to develop Java programs quickly and easily. Its main features are that it is:

• Simple - It has a deliberately smaller and simpler interface than professional environments like NetBeans or Eclipse. This allows beginners to get started more quickly, and without being overwhelmed.
• Designed for teaching - IDE is deliberately designed with good pedagogy in mind. There is a popular textbook designed for teaching introductory university/college courses with the app, and a site full of teaching resources.
• Interactive BlueJ - allows you to interact with objects. You can inspect their value, call methods on them, pass them as parameters and more. You can also directly invoke Java expressions without compiling. Thus the tool is a powerful graphical shell/REPL for Java.
• Portable BlueJ - runs on Windows, Mac OS X, Linux and other platforms which run Java. It can also run without installation from a USB stick.
• Mature BlueJ - is over fifteen years old, but continues to be updated and supported by a full-time team. It aims to respond to all technical support requests within one working day.
• Innovative BlueJ - has several features not seen before in other IDEs. Its object bench, code pad, and scope colouring were all original BlueJ features.

BlueJ's editor features unique scope highlighting, where the background of each code block is coloured to allow you to visually scan the code much faster. It also helps in spotting misplaced curly brackets. Objects can be inspected while the program is running. The contents of fields are displayed to aid understanding and debugging. As well as allowing inspection of objects while the program is running, objects can be dynamically created, and their methods can be invoked. You can also invoke Java code directly, without compilation, just by typing it in. The result is printed out, and can then be inspected, manipulated, or passed as a parameter to another method call.
Note: Requires Java JDK.

Also Available: Download BlueJ for Mac and BlueJ Portable

Installing BlueJ and Java Howto install BlueJ on your computer at home:IMPORTANT NOTE:Your setup at home will likely not be identical to the one we have in ourlabs. Any assignments that you turn in will be graded on our lab machines.This means that if you choose to work from home, it is your responsibilityto make sure that your program compiles and runs correctly on the lab machineswhen you turn it in.The recommendedHardware Requirements for BlueJ are: 64MB RAM and a 300Mhz Processor, butthe bare minimum you could get by with are: 32MB of RAM and a 166Mhz Processor.Here are the directions:1. First, youneed to download and install the.(If you wantto run BlueJ on a Mac, you need to be running OS X. Learn to speak bengali free. Java is already installed,so go to step 3. I have not actually installed BlueJ on a Mac myself, soyou're on your own here.

But the directions should be similar.)2. After thefile has been downloaded, double click it. The installer will then promptyou for an installation directory.

Choose 'C:Program Filesjdk1.3.1' whichis the same location that the labs in the CMC use.3. Next, youneed to download and install,which is a (free!) graphical programming tool. Again, the installer willask for an installation directory, choose 'C:bluej' which is the samelocation that the CMC labs use You will also need to type in theJava JDK directory, which you typed in during the above step ('C:ProgramFilesjdk1.3.1').4.

Now, youneed to create a shortcut on your desktop for bluej. So, navigate to yourinstallation directory ('C:bluej'). In the directory you will find a filenamed 'bluej.bat' that you should right click on. Select 'Send To' andthen select 'Desktop (create shortcut).' Now, go to your desktop and rightclick on the shortcut that you just made. Select 'Properties.'

There shouldbe many tabs available to you; go to the one that says 'Memory.' Underthe heading 'Conventional Memory,' there should be an option that says'Initial Environment.' Select the number 4096. Next, go to the 'Program'tab. There should be a field marked 'Run,' make sure it is set to 'minimized.'

Now click on the 'Change Icon' button. Now select 'Browse' and navigateto 'C:bluejlib' and select bluej.ico. Click OK on the icon selectionwindows, and the window with all the tabs. Finally, rename your desktopshortcut to 'bluej' (no quotes).Documentationcan be found(BlueJ) and (Java).5. The laststep is installing the javabook library.

First, obtain the from the.Unzip the file that you download into the folder 'C:bluejjavabook'. Then,start up BlueJ. Click 'Tools', then 'Preferences', then click on the 'Libraries'tab. Click on the 'Add' button, then type 'C:bluej' in the 'File name'box. Click the 'Open' button, then click OK. Shut down BlueJ, and startit up again. Go to the libraries tab again to make sure your change stuck(occasionally it doesn't stick, and you have to do it again.) Javabookshould now work.NOTE: In thelabs, we use jikes compiler by IBM instead of the javac compiler by Sunsince it is faster.

I have not included directions below on how to configureBlueJ to work with jikes, though you're welcome to figure this out by surfingthe website if you wish.