Thread: can't get my entered values

i want to enter student records and i made functions and arrays for that...the problem is i can't get my entered values and back to me and the output is "null" please check screen shot also.

package javaapplication10;
 
import javax.swing.JOptionPane;
public class JavaApplication10 {
 
    int count=0;
    public int x=10;
    public int rollno[];
 
    public String[] name;        
       public String[] sclass;
       public int[] marks;
       public void JavaApplication10()//constructor
       {
         rollno=new int[10];
         name=new String[10];
         sclass=new String[10];
         marks=new int[10];
 
 
       }
 
       public void addrec(int a,String b,String c,int d)
       {
 
       count++;
 
       }
       public void deletrec()
       {
 
       }
       public void viewrec()
       {
 
           for (int i=0;i<=9;i++)
       System.out.println(rollno[i]+"\t"+name[i]+"\t"+sclass[i]+"\t"+marks[i]);
 
       }
 
    public static void main(String[] args) {
        // TODO code application logic here
      JavaApplication10 objjj=new  JavaApplication10();
      objjj.JavaApplication10();
      String r=JOptionPane.showInputDialog("enter the roll number");
      int R=Integer.parseInt(r);
     String n=JOptionPane.showInputDialog("enter the name of student");
     String c=JOptionPane.showInputDialog("enter the class of student");
     String m=JOptionPane.showInputDialog("enter the marks of student");
     int M=Integer.parseInt(m);
     objjj.addrec(R,n,c,M);
     objjj.viewrec();
 
 
    }
 
}

Originally Posted by aussiemcgr

What should your addrec() method be doing? It doesn't seem correct.

by addrec method i want to enter record by passing values from function

Originally Posted by WhiteSoup12

There is nothing in the addrec method to store the parameter values in the array. Here's an example of how you would do that...

public void addrec(int a,String b,String c,int d)
{
   rollno[count] = a;
   count++;
}

You would do the same for each entry.

I'm loving this forum this really helped me thanks whitesoup