The first day of Java learning

Helloworld.java

Class HelloWorld {

Public HelloWorld () {

}

public static void Main (string[] args) {

Learn2.classmethod (); Invoking other class class methods

learn2 change = new learn2 (); Create an object (instance)

Change.examplemethod (); Calling other class instance methods

Classmethod ();//Call itself Class class method

HelloWorld self = new HelloWorld ();

Self.mymethod ();//Call itself class instance method

}

public static void Classmethod () {

System.out.println ("Call Your own class method (static method)");

}

public void MyMethod () {

System.out.println ("Invoke own class instance method");

}

}

Learn2 class

public class Learn2 {

public void Examplemethod () {

SYSTEM.OUT.PRINTLN ("Call other class method (instance method, need new object to be called)");

}

public static void Classmethod () {

SYSTEM.OUT.PRINTLN ("Call other class static methods (class methods, which can be called directly with the class name)");

}

}

The first day of Java learning