JAVA PROGRAM STRUCTURE

Java program may contain many classes of which only one class defines a main method.

Documentation Section

The documentation section comprises a set of comment lines giving the name of the program,

and other details.

Package Statement

This statement declares a package name and informs the compiler that the classes defined

here belong to this package

Import Statement

This is similar to #include statement in c/c++

Ex: import java.io.*;

This statement instructs the interpreter to load the methods contained in the package java.io.

Interface Statement

This is an optional section and is used only when we wish to implement the multiple

inheritance feature in the program.

Class Definition

A java program may contain multiple class definitions, which contains business logic

methods.

Main Method Class

Since every Java program requires a main method as its starting point, this class is the

essential part of a java program.