Error While creating a New Node in java

Question

My Node Class:

static class Trie{

     int count;
     Trie[] words;

     public Trie(){
         count =-1;
            for(int i=0;i<26;i++)
            words[i] = null;
     }

}

My Line of Code For Creating a New Node:

if(Root==null)
        Root = new Trie();

I am getting the following error

Exception in thread "main" java.lang.NullPointerException

What I have Done Wrong , How to create a new object

Answer 1

您从未初始化过单词：

words = new Trie[26];