对不对？ 也没找到答案
父类
package com.jiaotong;
public class Jtgj {
int sum=10;
public void che(){
System.out.println("交通工具具有走的能力:能载客"+sum+"人");
}
}
子类
package com.jiaotong;
public class Car extends Jtgj {
int sum=40;
public void che(){
System.out.println("汽车在陆地跑 能载客："+sum+"人");
}
}
子类
package com.jiaotong;
public class Fj extends Jtgj {
int sum=200;
public void che(){
System.out.println("飞机在天上飞 能载客："+sum+"人");
}
}
子类
package com.jiaotong;
public class Lc extends Jtgj {
int sum=3000;
public void che(){
System.out.println("轮船在海上行驶 能载客："+sum+"人");
}
}
入口类
package com.jiaotong;
public class Initail {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Jtgj obj1=new Car();
Jtgj obj2=new Fj();
Jtgj obj3=new Lc();
obj1.che();
obj2.che();
obj3.che();
}
}
