【小白提问】我这个哪里错了呀！！！

public class Person{
    static String name=new String();
    static char gender;
    static int number;

    public Person(){ }

    public Person(String name, char gender,int number){
        this.name=name;
        this.gender=gender;
        this.number=number;
    }

    public static void showMe(){
          String g=new String();

       if(gender=='M'){
              g="male";
       }else if(gender=='F'){
              g="female";
          }else{
           g="unknown";
       }
          System.out.println(name+"-"+g+"-"+number);
    }

    public static void main(String[] args) {
        Person p1 = new Person();

        Person p2 = new Person("Jerry",'M',1990);

        Person p3 = new Person("Jane", 'F', 2000);


        p1.showMe();

        p2.showMe();

        p3.showMe();


    }
}

答案应该是这个，但我就是不对..呜呜呜.

-unknown-0

Jerry-male-1990

Jane-female-2000

把变量前面的static去掉，如果你的需求需要加static那么就按下面这样写，有空了解一下static关键字
        Person p1 = new Person();
        p1.showMe();

        Person p2 = new Person("Jerry",'M',1990);
        p2.showMe();

        Person p3 = new Person("Jane", 'F', 2000);
        p3.showMe();