i'm unable to get my entered values i initialized array to enter student record and also write functions to get this done but when i call functions i can't get any value and all output is "null"
package javaapplication10;
import javax.swing.JOptionPane;
public class JavaApplication10 {
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)
{
}
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();
}
}
