The following simple program
class Motto {
public static void main(String[] args) {
System.out.println("Java rules!");
}
}
prints the String output
Java rules!and stops when the Java program with root-class Motto is executed. Before any Java program can be executed, it must be compiled into a form suitable for machine execution called a class file Motto.class. The name of the class file generated for a class C is simply C.class.
In DrJava, the Compile button applies the compiler to each open Java files and write out the resulting class files to the file system--assuming that the files did not contain any syntax errors. Each class file is stored in the same direcoty as the corresponding source (.java) class.
Finger Exercise: Using DrJava, define the Motto class
given above and execute it as program.