To compile the program, execute the compiler, javac, specifying the name of the source file on the command line:
C:\>javac Example.java
The javac compiler creates a file called Example.class. Example.class contains the bytecode version of the program.
To run the program, use the Java interpreter, called java. Pass the class name Example as a command-line argument, as shown here:
C:\>java Example
When the program is run, the following output is displayed:
Java.
When Java source code is compiled, each individual class is put into its own file named classname.class.