Java super关键字调用父类过程解析

package com.my.pac14;

/**
 * @auther Summerday
 */
public class SuperTest {
  public static void main(String[] args) {
    SubClass sb = new SubClass(20);
    //创建子类的对象，调用子类的print方法
    sb.print();
  }
}

class BaseClass {
  public int a = 5;
  public int b;
  static public int c = 30;

  BaseClass(int b) {
    this.b = b;
    System.out.println("superb:" + this.b);
  }

  public void print() {
    System.out.println("父类的a = " + a);
    //System.out.println(this.a);
  }

  public void read() {
    System.out.println("read..");
  }
}

class SubClass extends BaseClass {
  public int a = 10;
  //子类中的实例变量将父类中的隐藏，所以下面的this.b=0
  public int b;
  static public int c = 40;
  
  SubClass(int b) {
  //调用父类的构造器
    super(b);//20
    System.out.println("superb:" + super.b + "，subb:" + this.b);//0
  }

  public void print() {
    //打印父类中的a=5
    System.out.println(super.a);//5
    //调用父类的print方法，打印a=5
    super.print();//5
    //直接打印a，会打印出当前类的a，打印子类的a=10
    System.out.println("子类的a = " + a);
    //类变量也会覆盖
    System.out.println(c);
    //用父类名访问父类的类变量
    System.out.println("父类中的类变量c = " + BaseClass.c);
    //没有重写，不需要使用super调用父类方法
    read();
  }

}

//父类
public int a = 5;
//子类
public int a = 10;
//在子类中访问父类的实例变量
public void print() {
  //打印父类中的a=5
  System.out.println(super.a);//5
  //直接打印a，会打印出当前类的a，打印子类的a=10
  System.out.println("子类的a = " + a);
}

//父类
static public int c = 30;
//子类
static public int c = 40;
//在子类中访问父类的类变量
public void print() {
  //类变量也会隐藏
  System.out.println(c);
  //用父类名访问父类的类变量
  System.out.println("父类中的类变量c = " + BaseClass.c);
} 

//父类
public void print() {
  System.out.println("父类的a = " + a);
  //System.out.println(this.a);
}
public void read() {
  System.out.println("read..");
}
//子类
 public void print() {
  //调用父类的print方法，打印a=5
  super.print();//5
  //没有重写，不需要使用super调用父类方法
  read();
}