Array of Classes NullPointerException

Question

This is Element class:

public class Element {

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


        

Answer 1

Between those two lines

 Element[] element = new Element[103];
 element[0].setElementName("H");

you need to create element[0], that is to build a new instance of Element. In your code element[0] is null, hence the NullPointerException when you call setElementName.