Array of Classes NullPointerException

Question

This is Element class:

public class Element {

    private String elementName;
    private int atomicNumber;
    private String Symbol;
    priv         


        

Answer 1

When you create an array of objects all it's elements are initialized to null. You simply have to create a new Element object and add it to the array like this:

Element[] elems = new Element[100];
elems[0] = new Element();
elem[0].setElementName("asdf");