I'm newbie in Java. So question might sound simple, but I'm stuck and can not figure out why I get the error java.lang.String although all I do is just write out the setter and getter normally. So below is my code:

    package PerSion;

public class Student extends Persion{
    String RollNum, Class;
    double Score;

    public String getRollNum() {
        return this.RollNum;
    }

    public void setRollNum(String RollNum) {
        this.RollNum = RollNum;
    }

    public String getClass() {  //this is where the error show up
        return this.Class;
    }

    public void setClass(String Class) {
        this.Class = Class;
    }

    public double getScore() {
        return this.Score;
    }

    public void setScore(double Score) {
        this.Score = Score;
    }

    public Student() {
    }

    public Student(String RollNum, String Class, double Score) {
        this.RollNum = RollNum;
        this.Class = Class;
        this.Score = Score;
    }

    public Student(String RollNum, String Class, double Score, String ID, String Name, String Address, int Age) {
        super(ID, Name, Address, Age);
        this.RollNum = RollNum;
        this.Class = Class;
        this.Score = Score;
    }

    @Override
    public void Display() {
        System.out.println(RollNum "\t" Name "\t" Class "\t" Score);
    }
    
}

CodePudding user response：

Your problem is that every class already has a final method called getClass. You'll have to call your one something else, because you can't have two methods with the exact same name and same parameters in a class, and you can't override a final method.