static 关键字（静态方法）不起作用[关闭]

Question

关闭。 此问题不可重现或由拼写错误引起。 它目前不接受答案。

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3 小时前关闭。

改进这个问题

class Student{
int rno;
String name;
static String college_name = "TIT";

public Student(int rno, String name) {
    this.rno = rno;
    this.name = name;
}

void display(){
    System.out.println(rno + " " + name);
}

static void display1(){
    System.out.println(college_name);
}}

public class StaticKeyword{
    public static void main(String[] args) {
        Student s1 = new Student(211, "XYZ");
        s1.display();
    }
}

I'm learning about the static keyword in java, I don't know why but display1() is a static method, and static methods don't need to be called via the object, then why isn't it displaying the result?