How to return a boolean true value when comparing a String with a StringBuilder without using equals?

Asked Nov 15 '14 at 18:28

Active Nov 15 '14 at 19:27

Viewed 34 times

I want this code to print true. I saw this question when passing my OCA7 exam. I know the thing about the string pool and all and I also know the difference between equals() and ==.

The exam question didn't offer the .equals() option. It only said to figure out a way to make this code to return true by comparing a Stringbuilder with a String "==" operator. I had to figure out 1 option among 4 other that all had used the "==". No equals –

package test.test;

public class SomeClass{

    public static void main(String[] args) {

        StringBuilder sb = new StringBuilder("abcd");

        String str = sb.toString();
        System.out.println(sb.toString() == str);

    }
}

edited May 23 '17 at 12:20

Community

asked Nov 15 '14 at 18:28

AchillesVan

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First of all: http://stackoverflow.com/questions/513832/how-do-i-compare-strings-in-java – gla3dr Nov 15 '14 at 18:29
Use `.equals()`, because the Strings are not interned. – August Nov 15 '14 at 18:29
The exam question didnt offer the .equals() option. It only required a "==" operator. I had to figure out 1 option among 4 other that all had used the "==". No equals – AchillesVan Nov 15 '14 at 18:32
1

@Rahoul what were the choices? – August Nov 15 '14 at 18:43
It was today but I dont remember the choices. There 4 choices – AchillesVan Nov 15 '14 at 18:45
Why is this question closed? The supposedly duplicated question was different. In this question you Vann not use equals(). – ArturoTena Nov 15 '14 at 18:51
BTW, I could use intern(), so sb.toString().intern() == str.intern() is one possible answer IMO. – ArturoTena Nov 15 '14 at 18:53

How to return a boolean true value when comparing a String with a StringBuilder without using equals?

0 Answers0