Array of Classes NullPointerException

Question

This is Element class:

public class Element {

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


        

Answer 1

You have not initialized element[0] . You need to initialize it first, in fact every array element if you intent to use them.

element[0]=new Element();

or you can initialize all of them using loop

  for(int i=0;i