Strange If Condition

Question

Dear All, My Name Is Ayman and I've been Programming on NetBeans 4 Only Couple o' Days, But What Helped me the most is i have a good background of other programming languages like c#..
i have a strange problem in my "if statement" !! i hope to get the answer for the problem soon cuz i wouldn't rest until i get the answer and i couldn't get the answer my self. by the way, this is my first post, i hope it would be a good one :)
private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {                                     
        jTextField1.setText(RightAnswer);
        if (jTextField1.getText().toString() == RightAnswer  )
           jLabel2.setText("Right");
        else
            jLabel2.setText("Wrong");
        //jTextField1.setText(jTextField1.getText());
// TODO add your handling code here:
//Integrated Security=true;
    int rand;
    String RightAnswer;
    String Question;
    private void formWindowOpened(java.awt.event.WindowEvent evt) {                                 
           Connection con = null;
           Statement stm = null;
           ResultSet st = null;
           ResultSet m = null;
           String connectionUrl = "jdbc:sqlserver://localhost:1360;databaseName=amhajja;user=ayman;password=123456";
           try
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            con = DriverManager.getConnection(connectionUrl);
            String SetAskedToFalse = "update Questions set Asked = 0;";
            rand =1+ (int) (Math.random()*4);
            stm = con.createStatement();
            st = stm.executeQuery(SetAskedToFalse);
            catch(Exception e)
              jLabel1.setText(e.toString());
           try
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            con = DriverManager.getConnection(connectionUrl);
            String SelectQ = "select * from Questions where ID="+rand+";";
            stm = con.createStatement();
            st = stm.executeQuery(SelectQ);
            while (st.next())
                RightAnswer = st.getString(3);
                jLabel1.setText(st.getString(2));
           catch(Exception e)
               jLabel1.setText(e.toString());
    }      note* : i always get Wrong even though am sure that i enter the right answer on jTextField1, and i checked once by letting the jave prints the value of RigntAnswer and the value of jTextField1.getText().toString() and they are the same, but doesn't enter the "then" section and goes to the "else" section always..
i also tried to put this statement before the if statement and also it didn't work for me:
jTextField1.setText(RightAnswer); // ofcourse that's not what i want but only to try to figure out what's wrong.
and also didn't enter the "then" section of my if statement.
sorry if this is a newbie question, and thnx for all in advance.

Answer 1

Roronoa.Zoro wrote:
Dear All, My Name Is Ayman and I've been Programming on NetBeans 4 Only Couple o' Days, But What Helped me the most is i have a good background of other programming languages like c#..
i have a strange problem in my "if statement" !! i hope to get the answer for the problem soon cuz i wouldn't rest until i get the answer and i couldn't get the answer my self. by the way, this is my first post, i hope it would be a good one :)
private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {                                     
jTextField1.setText(RightAnswer);
if (jTextField1.getText().toString() == RightAnswer  )
jLabel2.setText("Right");
else
jLabel2.setText("Wrong");
//jTextField1.setText(jTextField1.getText());
// TODO add your handling code here:note* : i always get Wrong even though am sure that i enter the right answer on jTextField1, and i checked once by letting the jave prints the value of RigntAnswer and the value of jTextField1.getText().toString() and they are the same, but doesn't enter the "then" section and goes to the "else" section always..
i also tried to put this statement before the if statement and also it didn't work for me:
jTextField1.setText(RightAnswer); // ofcourse that's not what i want but only to try to figure out what's wrong.
and also didn't enter the "then" section of my if statement.
sorry if this is a newbie question, and thnx for all in advance.Use the equals() method to compare Strings not "==".
if (thisString.equals(thatString) {