下面有一些代码关于this和super在继承中的一些用法
package net.onest.demo2;
public class Person {
private String name;
private int age;
public String getName() {
System.out.println("super关键字的用法");
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Person(String name) {
System.out.println("基类中的含参构造方法");
}
public Person() {
System.out.println("基类中的无参构造方法");
}
}
package net.onest.demo2;
public class Student extends Person{
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Student(String name) {
super(name);
// TODO Auto-generated constructor stub
System.out.println("使用了super关键字");
}
public Student(){
this("123");
super.getName();
System.out.println("派生类的无参构造方法");
}
public Student(int age) {
// this("张三");
this();
System.out.println("使用了this关键字调用其他的构造方法");
}
public static void main(String[] args) {
Person a = new Student(18);
System.out.println();
Student b = (Student) new Person();
}
}