package mypack;public class Outer {	Inner1 w = new Inner1();	/**	 * @param args	 */	public static void main(String[] args) {		// TODO Auto-generated method stub		Outer demo = new Outer();				//创建内部类,要先把外部类实例化,然后实例化内部类		Outer.Inner1 Inner1 = demo.new Inner1();		//创建静态内部类,可以直接实例化		Outer.Inner2 Inner2 = new Outer.Inner2();			}	//非静态内部类	class Inner1{		Inner1(){					}		int a = 0;			}	//静态内部类	static class Inner2{		Inner2(){					}		int a = 0;			}}