Name: ssT124754 Date: 03/02/2001


java version "1.3.0_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0_01)
Java HotSpot(TM) Client VM (build 1.3.0_01, mixed mode)



Using the long constructor of JOptionPane.showInputDialog, with Strings as the
input Objects, if initialValue.equals(anyOtherValueInList), the Object
returned is the initialValue when the "equals" choices are selected. In
other words, the items with equivalent strings to the initialValue cannot
be selected.

Here is a quick application that demonstrates the problem. It creates a
showInputDialog with 6 entries, Object[]possibles = {"Test0", "Test0", "Test1",
"Test1", "Test2", "Test2"} and sets initialValue to possibles[0]. It prints out
whether the selected object is the same object and whether the strings match.
Choose any item and you should get something like this:
false false
false false
false true <--- duplicate string but not the right object
true true <--- desired, both the object and string are matched
false false
false false

However, if you choose the second item (the second "Test0"), it shows as:
true true <--- Wrong! Should be false true
false true <--- didn't get the right object
...

I've looked in the debugger (Forte) and see the string ID's and have confirmed
the observed behavior.

Here's the code (sorry about word wrap formatting things...)

public class Tester extends javax.swing.JFrame {

    public Tester() {
        initComponents ();
        pack ();
    }

    private void initComponents () {
      options = new javax.swing.JButton ();
      addWindowListener (new java.awt.event.WindowAdapter () {
        public void windowClosing (java.awt.event.WindowEvent evt) {
          exitForm (evt);
        }
      }
      );

      options.setText ("options");
      options.addActionListener (new java.awt.event.ActionListener () {
        public void actionPerformed (java.awt.event.ActionEvent evt) {
          optionsActionPerformed (evt);
        }
      }
      );


      getContentPane ().add (options, java.awt.BorderLayout.CENTER);

    }

  private void optionsActionPerformed (java.awt.event.ActionEvent evt) {
    Object[] possibles = new Object[6];
    for (int j=0; j<6; j++) {
      possibles[j] = (Object)(new String("Test"+j/2));
    }

    Object selected = javax.swing.JOptionPane.showInputDialog(null,
      "Choose button to test: ","Input",
javax.swing.JOptionPane.INFORMATION_MESSAGE,
      null,possibles,possibles[0]);

    for (int j=0; j<6; j++) {
      System.out.println
        ((selected== possibles[j])+" "+selected.equals(possibles[j]));
    }
  }
  /** Exit the Application */
  private void exitForm(java.awt.event.WindowEvent evt) {
      System.exit (0);
  }

  public static void main (String args[]) {
      new Tester ().show ();
  }

  private javax.swing.JButton options;
}
(Review ID: 118019)
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