package com.ssm.cts.test;
public abstract class Bike {
  private String name;
  
  public abstract void start();
}
package com.ssm.cts.test;
public class MotoBike extends Bike {
  @Override
  public void start() {
    System.out.println("启动");
  }
}
package com.ssm.cts.test;
public class ClassTest {
    // 测试
  public static void main(String[] args) {
    Bike bike = new MotoBike();
    bike.start();
  }
}
