Analysis of HelloWorld Program

• A class statement, which introduces the class to be defined.
  • Identifier following the class keyword is the name by which the class will be referenced.
  • Set of possible modifiers on the class statement which affects its utilization by other classes.
• A main method.
  • Prototype (including the modifiers) must be written as shown to indicate the Java program starting point.
  • A void method must not return a value.
  • Note that String is part of the Java language, so no special headers or declarations are needed to use it.
• A call to the method println, which is defined in the Java library.
  • Java compiler will use the System class definition to do argument type checking
  • Java run-time system will use the System class to perform the println method