Robot configuration on Java

Question

I'm having trouble writing a program that will give me a YES or NO message given the input I enter for my robot. I want to enter my wheel configuration (doesn't matter what it is), and I want the output to show YES if it can move with the wheel configuration I enter.

Thus far, I have this basic code:

 If(a=="yes"){
        System.out.println("YES");
    }
    else if(a == "no"){
        System.out.println("NO");

Notice how I've not added numbers into the bracket because I'm not sure how to approach this, and it's the first time I'm really testing myself - and I'm new to Java. Help is appreciated as ever.

Thanks. So .equals() tests the string values which is better in this case. — Hectic, Oct 20 '14 at 11:44

score 1 · Answer 1 · answered Oct 20 '14 at 11:33

1

Try to change == with equals

if(a.equals("yes")){
    System.out.println("YES");
}
else if(a.equals("no")){
    System.out.println("NO");

answered Oct 20 '14 at 11:33

MSA

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score 1 · Answer 2 · answered Oct 20 '14 at 11:35

Because you are comparing Strings you should use equals() since that only compares what was written. == however only returns True if it refers to the same Object.

Do as following:

if(a.equals("yes"))
   System.out.println("YES");
else if(a.equals("no"))
   System.out.println("NO");

Robot configuration on Java

2 Answers2