this

对象本身。public class ThisTest {

ThisTest tTest;

public ThisTest(){

tTest = this;

}

public void test(){

System.out.println(this);

}

public static void main(String arg[]){

new ThisTest().test();

}

}

成员方法引用。

成员变量引用。public class ThisTest {

String name;

String password;

public ThisTest(String name,String password){

this.name = name;

this.password = password;

}

public static void main(String arg[]){

ThisTest tTest= new ThisTest("fanqd","123456");

System.out.println(tTest.name);

System.out.println(tTest.password);

}

}

在构造函数内部第一行，调用本类另一个构造函数。public class ThisTest {

String name;

String password;

public ThisTest(int age){

this("liulingling", "666666");

}

public ThisTest(String name,String password){

this.name = name;

this.password = password;

}

public static void main(String arg[]){

ThisTest tTest= new ThisTest(20);

System.out.println(tTest.name);

System.out.println(tTest.password);

}

}

Super

父类方法引用。

父类成员变量引用。

在构造函数第一行，调用父类构造函数。public class SuperTest extends Father {

public SuperTest(String name,int age){

super(name, age);

}

public SuperTest(){

super(); //可以省略，子类会自动调用父类的默认构造函数

}

public static void main(String arg[]){

SuperTest st = new SuperTest("fanqd",30);

System.out.println(st.name);

System.out.println(st.age);

SuperTest df = new SuperTest();

}

}