String-Comparison in java

Question

I'm trying to compare a value from a cell in a JTable and a value returned from an SQL ResultSet, but it always return FALSE even if I know they are equal.

Their content equals "1" I also checked for the length of each string which is 1.

    boolean test = (myJTable.getValueAt(0, 0).toString() == rs.getString("ID"))
    //test equals to false.

What makes them different??

Thank you in advance for your help.

Use `String#equals()`, that will check if the Strings have the same data. Using `==` compares references. — AntonH, Mar 14 '14 at 21:55
If this question is so redundant, how come I have never cross it in any tutorial of java about operators? — Warrio, Mar 15 '14 at 12:52

score 0 · Accepted Answer · edited May 23 '17 at 11:57

0

Don't compare String using ==, use equals() method.

Try this:

boolean test = (myJTable.getValueAt(0, 0).toString().equals(rs.getString("ID")));

For more details check this

edited May 23 '17 at 11:57

Community

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answered Mar 14 '14 at 21:56

Salah

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String-Comparison in java

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