static class Person{
private String address = "swjtu,chenDu,China";
public String mail = "josserchai@yahoo.com";//內部類公有成員
public void display(){
//System.out.println(id);//不能直接訪問外部類的非靜態(tài)成員
System.out.println(name);//只能直接訪問外部類的靜態(tài)成員
System.out.println("Inner "+address);//訪問本內部類成員。
}
}

public void printInfo(){
Person person = new Person();
person.display();

//System.out.println(mail);//不可訪問
//System.out.println(address);//不可訪問

System.out.println(person.address);//可以訪問內部類的私有成員
System.out.println(person.mail);//可以訪問內部類的公有成員

}
public static void main(String[] args) {
StaticTest staticTest = new StaticTest();
staticTest.printInfo();
}
}

class Inner{
public int y = 10;
private int z = 9;
int m = 5;
public void display(){
System.out.println("display outer_x:"+ outer_x);
}
private void display2(){
System.out.println("display outer_x:"+ outer_x);
}

}

void test(){
Inner inner = new Inner();
inner.display();
inner.display2();
//System.out.println("Inner y:" + y);//不能訪問內部內變量
System.out.println("Inner y:" + inner.y);//可以訪問
System.out.println("Inner z:" + inner.z);//可以訪問
System.out.println("Inner m:" + inner.m);//可以訪問

InnerTwo innerTwo = new InnerTwo();
innerTwo.show();
}

class InnerTwo{
Inner innerx = new Inner();
public void show(){
//System.out.println(y);//不可訪問Innter的y成員
//System.out.println(Inner.y);//不可直接訪問Inner的任何成員和方法
innerx.display();//可以訪問
innerx.display2();//可以訪問
System.out.println(innerx.y);//可以訪問
System.out.println(innerx.z);//可以訪問
System.out.println(innerx.m);//可以訪問
}
}

public static void main(String args[]){
Outer outer = new Outer();
outer.test();
}
}

    public class AnonymousInnerClassDemo extends Applet{
    public void init(){
        addMouseListener(new MouseAdapter(){
            public void mousePressed(MouseEvent me){
             showStatus("Mouse Pressed!");
        }
        })
    }
    public void showStatus(String str){
        System.out.println(str);
    }
    }

//Person類，基類
class Person{
String name;
Email email;
public void setName(String nameStr){
this.name = nameStr;
}
public String getName(){
return this.name;
}
public void setEmail(Email emailObj){

this.email = emailObj;
}
public String getEmail(){
return this.email.getMailStr();
}
//內部類的內部類，多層內部類
class Email{
String mailID;
String mailNetAddress;
Email(String mailId,String mailNetAddress){
this.mailID = mailId;
this.mailNetAddress = mailNetAddress;
}
String getMailStr(){
return this.mailID +"@"+this.mailNetAddress;
}
}
}
//另一個內部類繼承外部類本身
class ChildLayer extends Layer{
void print(){
System.out.println(super.testStr);//訪問父類的成員變量
}
}
//另個內部類繼承內部類Person
class OfficePerson extends Person{
void show(){
System.out.println(name);
System.out.println(getEmail());
}
}
//外部類的測試方法
public void testFunction(){
//測試第一個內部類
ChildLayer childLayer = new ChildLayer();
childLayer.print();

//測試第二個內部類
OfficePerson officePerson = new OfficePerson();
officePerson.setName("abner chai");
//注意此處，必須用 對象.new 出來對象的子類對象
//而不是Person.new Email(...)
//也不是new Person.Email(...)
officePerson.setEmail(officePerson.new Email("josserchai","yahoo.com"));

officePerson.show();
}
public static void main(String[] args) {
Layer layer = new Layer();
layer.testFunction();
}
}