5
Java中为什么不能把Person类放到Demo8类里面
class Demo8{
class Person{
int id; //编号
String name; //姓名
int age; //年龄
//构造函数
public Person(int id,String name ,int age){
this.id = id;
this.name = name;
this.age = age;
}
//比较年龄的方法
public void compareAge(Person p2){
if(this.age>p2.age){
System.out.println(this.name+"大!");
}else if(this.age<p2.age){
System.out.println(p2.name+"大!");
}else{
System.out.println("同龄");
}
}
}
public static void main(String[] args)
{
Person p1 = new Person(110,"狗娃",17);
Person p2 = new Person(119,"铁蛋",9);
p1.compareAge(p2);
}
}
qq_29901455
2019/01/22 17:25- java
- java-ee
- eclipse
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