Inheritance Problem

[cor rupt]

Hi, I'm new here. I have a little problem with inheritance. Here are my codes that i made:

import java.util.*;
public class GymApp{
	public static void main(String[] args){
		Scanner inp = new Scanner(System.in);
		Gymnasium obj1 = new Gymnasium();
		SilverMember obj2 = new SilverMember();
		
		System.out.print("Enter name: ");
		String name = inp.nextLine();
		System.out.print("Enter IC No: ");
		String icNo = inp.nextLine();
		System.out.print("Enter gender: ");
		String gender = inp.nextLine();
		
		obj1.setData(name, icNo, gender);
		
		System.out.println(obj2.toString());

		}
}

class Gymnasium{
	public String name;
	public String icNo;
	public String gender;
	
	public Gymnasium(){
		name = "-";
		icNo = "-";
		gender = "-";}
	
	public Gymnasium(String name ,String icNo, String gender){
		this.name = name;
		this.icNo = icNo;
		this.gender = gender;
	}
	
	public String getname(){
		return name;}
	public String getIC(String icNo){
		return icNo;}
	public String Gender(String gender){
		return gender;}
		
	public void setData(String name ,String icNo, String gender){
		name = name; icNo = icNo; gender = gender;}
		
	public String toString(){
		return "LOL";}	
}

import java.util.*;
class SilverMember extends Gymnasium{
	Scanner in = new Scanner(System.in);
	public String dayActivity;
	
	SilverMember(String name ,String icNo, String gender){
		super(name,icNo,gender);
	}
	
	public String getDayEntry(String dayActivity){
		System.out.print("C || E?");
		dayActivity = in.nextLine();
		return dayActivity;
	}
	
	double calcSilverChargers(){
		
		if(dayActivity.equals("C"))
			return 10;
		if(dayActivity.equals("E"))
			return 5;
		else
		return 0;
	}
	
	public String toString(){
		return "Name: "+name+"\n"+"IC No: "+icNo+"\n"+"Gender: "+gender+"\n"+
		"Day Activity: "+getDayEntry(dayActivity)+
		"\n"+"Silver Chargers: RM"+calcSilverChargers();
	}
}
		

The program produces few errors. Please help me with it. Thanks!!!

-corrupt1234

[Naishadh Parmar]

Can you post the exception stack trace???

[Winston Gutkowski]

cor rupt wrote:Hi, I'm new here. I have a little problem with inheritance. Here are my codes that i made:

I suspect others will have dealt with the mechanics, so I'm going to concentrate on what inheritance is.

I have to admit to being intrigued with your idea of making a SilverMember a subclass - for about 30 seconds.

I understand what you're thinking about, but the fact is: It won't wash.
If a Gymnasium is a class that is trying to encapsulate a gym, then SilverMember cannot be a subclass, because it isn't a gym; it's a member of (or possibly a set of rules concerning) a gym.

Create a class called GymMember, and then you may have a case for creating a SilverMember subclass.

Winston

[LQ McDonald III]

Winston has the start of it. Until you fix the super/sub class structure you currently have it doesn't even make sense to diagnose the problem.