learning java through bluej

BlueJ : An Introduction towards JAVA ExpertiseDheeraj Mehrotra City Montessori School Kanpur Road, [email protected] www.computerscienceexpertise.com

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CreditsMichael Klling School of Network Computing Monash University, Australia



What is BlueJ?BlueJ is a Java development environment specifically designed for teaching at an introductory level. It was designed and implemented by the BlueJ team at Monash University, Melbourne, Australia. More information about BlueJ is available at http://bluej.monash.edu.



BlueJInstallation BlueJ is distributed as an archive of Java classes in jar format. Installing it is quite straightforward. Prerequisites You must have JDK 1.2.2 or later installed on your system to use BlueJ. Some functionality works better with JDK 1.3, so it is worth getting or updating to the latest JDK release. If you do not have JDK installed you can download it from Suns web site at http://java.sun.com/j2se/.



Getting BlueJThe BlueJ distribution file is named bluejxxx.jar, where xxx is a version number. For example, the BlueJ version 1.1.1 distribution is named bluej-111.jar. You might get this file on disk, or you can download it from the BlueJ web site at http://bluej.monash.edu.



Installing BlueJWindows: Double-click the install file (bluejsetup). And follow the instructions further.



Installing BlueJ



Installing BlueJ



BlueJ installation



BlueJ Installation



BlueJ Installation



BlueJ Installation



BlueJ Installation



BlueJ Installation



BlueJ Installation



BlueJ Installation



Installing BlueJ

Once the BlueJ with JDK is installed, double click the above icon to have the following screen.computerscienceexpertise.com TOWARDS QUALITY LITERACY


BlueJ Opening Screen



Opening a project in BlueJ

BlueJ projects, like standard Java packages, are directories containing the files included in the project. If you start BlueJ from a command line, and you give a project as an argument, it will automatically be opened. If you start BlueJ without an argument, use the Project Open... menu command to select and open a project.



Coding a program



Compiling the program



Close the program



Next Screen



Creating an Object



Creating an Object



Creating Object



Executing the program through objects

Right Click the Mouse



Executing an Object

Select Void computerscienceexpertise.com work(String) TOWARDS function QUALITY LITERACYPDF created with pdfFactory Pro trial version www.pdffactory.com

Executing the programSupply The String as Input Within



INPUT STRING



Output Screen



Example Program 1// Program to compute and print all prime numbers between 100 and 500 class test1 { void prime() { int i,j,s=0,d=0; for(i=100;i

learning java through bluej

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