Question

Possible Duplicate:
NullPointerException when Creating an array of object

I am having NullPointerException in main method, in line

array[0].name = "blue"; 

Structure Class:

public class Items {

String name = "";
String disc = "";
}

Main Class :

public class ItemsTest {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        Items[] array = new Items[2];

            array[0].name = "blue"; //NullPointerException
        array[0].disc = "make";
        array[1].name = "blue";
        array[1].disc = "blue";
           }
}

Please help me how to resolve this.

Answer 1

Items[] array = new Items[2];

You have to initialize each element of array, by default they are null

Make it,

Items[] array = new Items[2];
//initialization
array[0] = new Items();
array[0].name = "blue"; //NullPointerException
array[0].disc = "make";

//initialization
array[1] = new Items();
array[1].name = "blue";
array[1].disc = "blue";