//父類 
class anotherPerson{ 
  String name = ""; 
  String age = ""; 
  public String getAge() { 
    return age; 
  } 
  public void setAge(String age) { 
    this.age = age; 
  } 
  public void setName(String name){ 
    this.name = name; 
  } 
  public String getName(){ 
    return name; 
  } 
  //第一個(gè)構(gòu)造方法 
  public anotherPerson (String name){ 
    this.name = name; 
  } 
  //第二個(gè)構(gòu)造方法 
  public anotherPerson(String name, String age){ 
    this(name);//是用同一類中的其他構(gòu)造方法 
    this.age = age; 
  } 
   
  public void ShowInfomation(){ 
    System.out.println("name is "+ name +"and age is "+age); 
  } 
} 
//子類 
class Teacher extends anotherPerson{ 
  String school = ""; 
  public void setSchool(String school){ 
    this.school = school; 
  } 
  public String getSchool(){ 
    return school; 
  } 
  public Teacher(String name){ 
    super(name); 
  } 
  //第一個(gè)構(gòu)造方法 
  public Teacher(String age,String school){ 
    super("babyDuncan",age);//使用父類的構(gòu)造方法 
    this.school = school; 
  } 
  public Teacher(String name,String age,String school){ 
    this(age,school);//使用同一類的構(gòu)造方法，而這一構(gòu)造方法使用父類的構(gòu)造方法 
    this.name = name; 
  } 
  //重寫了父類的函數(shù) 
  public void ShowInfomation(){ 
    System.out.println("name is "+ name +" and age is "+age+" and school is "+school); 
  } 
} 
public class testTeacher { 
 
  /** 
   * 測試一下super和this 
   */ 
  public static void main(String[] args) { 
    // TODO Auto-generated method stub 
    anotherPerson person1 = new anotherPerson("babyDuncan"); 
    anotherPerson person2 = new anotherPerson("babyDuncan","20"); 
    Teacher teacher1 = new Teacher("babyDuncan"); 
    Teacher teacher2 = new Teacher("20","JLU"); 
    Teacher teacher3 = new Teacher("babyDuncan","20","JLU"); 
    person1.ShowInfomation(); 
    person2.ShowInfomation(); 
    teacher1.ShowInfomation(); 
    teacher2.ShowInfomation(); 
    teacher3.ShowInfomation(); 
  } 
 
} 

name is babyDuncanand age is 
name is babyDuncanand age is 20 
name is babyDuncan and age is and school is 
name is babyDuncan and age is 20 and school is JLU 
name is babyDuncan and age is 20 and school is JLU