java string comparison not working [duplicate]

This question already has an answer here:

• How do I compare strings in Java? 23 answers

I am trying to compare two strings: totlwords & storage I claimed two variables under the class like below.

String[] totalwords = new String[2000];
String[] storage = new String[1000];

Especially, totalwords[0] is"good" and storage[0] is also "good". This is given in the below figure.

It is supposed to give me "boom" instead of "good". I've been doing this couple of hours and now I'm really stuck at this difficult question. Please give me insight! :(

    print("l:"+l+"count:"+countElement);
        for( int m=0; m<l; m++){
            for( int n =0; n<countElement; n++){
                println("totalwords:"+ totalwords[start_old+n]+" storage:"+storage[m]);
                if(totalwords[start_old+n]==storage[m]){
                    boolResult = 1;
                    totalwordsindex = start_old+n;
                    println("boom");
                }
                println("why???");

            }
        }