Java extends 类继承

package com.ssm.cts.test;

public class Car {
  public String code;
  private String name;

  public Car(String _name) {
    super();
    this.name = _name;
  }
  
  public void start() {
        System.out.println(name + "启动");
    }
  
  public void stop() {
        System.out.println(name + "停止");
    }
  
}

package com.ssm.cts.test;

public class MiniCar extends Car {

  public MiniCar(String _name) {
    super(_name);
  }

  // 子类可以用自己的方式实现父类的方法
  public void start() {
    // 子类拥有父类非private的属性，方法
        System.out.println(super.code + "启动");
    }
  
  // 子类可以拥有自己的属性和方法
  public void restart() {
    System.out.println("重启");
    super.stop();
    super.start();
    }
}

package com.ssm.cts.test;

public class ClassTest {
    // 测试
  public static void main(String[] args) {
    MiniCar car = new MiniCar("001", "别克");
    car.start();
    car.stop();
    car.restart();
  }

}