程序填空: 定义一个ManKind类,包括属性name和salary,方法Show() 定义Kid类继承ManKind类,具有属性age public class ManKind{ public String name; public float salary; public void Show(){ System.out.println(name+","+salary); } } public class Kid _______ ManKind{ public int age; public static void main(){ Kid k1=new _____; k1.____="四"; k1.____=5000.0f; k1.age=30; k1._____; //调用父类Show方法 } } }