compare value from HashMap with a String

Question

    String keys = "3|PNSN--G";   
    System.out.println(keys);
    System.out.println(test.get(keys));
    if ("c"==test.get(keys))
        System.out.println("Sucess");
    else
        System.out.println("Failed");



    3|PNSN--G
    c
    Failed

Why i cant compare it? If "c" is a String and value is a String "c" why it fails?

http://stackoverflow.com/questions/7520432/java-vs-equals-confusion — Pphoenix, Jul 02 '14 at 09:49
`==` checks if both strings are stored at the same place in yuor computrs memory. `equals` checks if they have the same value. — Pphoenix, Jul 02 '14 at 09:50

score 2 · Accepted Answer · answered Jul 02 '14 at 09:49

2

You should use .equals() rather than == operator for comparing String contents. == operator will check if both references point to same Object instance or not which is clearly not the case here.

answered Jul 02 '14 at 09:49

Aniket Thakur

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score 0 · Answer 2 · answered Jul 02 '14 at 09:49

0

String comparison in Java is just a comparison of the references.

You should use "c".equals(test.get(keys)).

answered Jul 02 '14 at 09:49

kjaquier

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compare value from HashMap with a String

2 Answers2