Compiling and Running Java

To compile and run the following programs, you would have to download and install the Java compiler from Sun Microsystems and have it properly configured for your computer.

After the installation, you may run the Java compiler in a DOS window with the command javac followed by the complete name of your file, taking care as to the case, as the Java compiler is case sensitive. For example:

If the compilation proceeds correctly without errors, the file hello.class should have been created. To execute the compiled code in the DOS window, you would type in the command:

However, if you are using TextPad to edit your Java program, you could configure TextPad to compile and run Java from within TextPad using the following steps:

• Make sure you have successfully installed JDK.
• Go to menus Configure/Preferences/tools, click on the button add, then click on JDK.
• Go to menus Configure/Preferences/tools, click on the + preceeding tools, select Run Java Application.
• In the textbox parameters, type in:
  -cp %CLASSPATH%;. $BaseName
• You have now configured TextPad to run Java. To doublecheck the configuration, go to the pulldown menu Tools and you should see the three options:
  
  • Compile Java (ctrl-1),
  • Run Java Application (ctrl-2),
  • Run Java Applet (ctrl-3).