public class Student{private String name;public void setName(String name){this.name = name;  //name代表形参里的name,this.name代表成员变量name}public String getName(int age){this.age = age;}
}

public class Test{int i = 0;Test(int i)}{    //构造方法this.i = i;}Test increament(){   //该方法的功能是使i+1,并返回Test本身i++;return this;  //返回当前对象}void print(){System.out.println("i="+i);}public static void main (String args[]){Test test = new Test(10);//每调用一次increament()方法i,就增加1test.increament().increament().print();}
}

//FatherClass
public class FatherClass{String name;int age = 48;public void info(){name = "zhangsan";System.out.println("name---->"+name);}
}//ChildClass
public class ChildClass extends FatherClass{String name;    //对父类中的name属性重新定义，即隐藏了父类中的name属性public void info(){      //对父类中的info()方法进行重写super.info();        //利用super关键字调用被子类覆盖的父类中的info()方法name ="zhangqian";System.out.println("childname---->"+name);System.out.println(name);System.out.println(super.name);}
}//Test
public class TestSuper{public static void main(String[] args){ChildClass child = new ChildClass();child.info();}
}

//SuperClass
public class SuperClass{public SuperClass(){    //父类中不含任何参数的构造方法System.out.println("SuperClass Create");}public SuperClass(String s){ //父类中含有一个字符串参数的构造方法System.out.println(s+"SuperClass Create");}
}//ChildClass
public class ChildClass extends SuperClass{public ChildClass(){super();     //调用父类中没有任何参数的构造方法System.out.println("ChildClass Create");}public ChildClass(String s){super(s);      //调用父类中含有一个字符串参数的构造方法System.out.println(s+"ChildClass Create");}public static void main(String[] args){ChildClass cc = new ChildClass();ChildClass fc = new ChildClass("Java, ");}
}