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  1. JDK
  2. JDK-8068047

JTable - JComboBox edit problem

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      Description

      FULL PRODUCT VERSION :
      java version "1.8.0_25" (build 1.8.0_25-b18)

      ADDITIONAL OS VERSION INFORMATION :
      Windows 8.1 Pro

      A DESCRIPTION OF THE PROBLEM :
      If an editable JComboBox is used as a cell editor within a JTable, and the user makes a change then moves off the cell, using either the tab key or by clicking on another cell, the change is lost. This is inconsistent with a normal cell where edits are not lost when the user moves to a new cell using tab or mouse clicking.
      Currently, the only way to accept an edit of an editable JComboBox within a JTable is to first press enter. Then press tab (or mouse click) to move to another cell.

      This problem was reported in 1999-2001 and was supposedly fixed but it appears to have resurfaced.

      Refer to:
      http://bugs.java.com/bugdatabase/view_bug.do?bug_id=4275046
      http://bugs.java.com/bugdatabase/view_bug.do?bug_id=4336350



      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Note: The sample code shown in bug “4275046” demonstrates the problem.


      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      ---- ComboEditorTest.java ------
      import java.awt.*;
      import java.awt.event.*;

      import javax.swing.*;
      import javax.swing.table.*;
      import javax.swing.event.*;

      public class ComboEditorTest extends JFrame {
          
              // fill in table values
          public static String[] colNames = {
                  "no.", "methode", "id 1", "id2", "sample weight", "unit"
              };
          public static Object[][] data = {
                   {
                      new Integer(1), "chlorid", "123456789012345678901234",
                      "4711 - 0815", new Float(7.2348), "g"
                  }, {
                      new Integer(2), "chlorid", "123456789012345678901234",
                      "4711 - 0815", new Float(7.2348), "g"
                  }, {
                      new Integer(3), "chlorid", "123456789012345678901234",
                      "4711 - 0815", new Float(7.2348), "g"
                  }
              };

          public ComboEditorTest() {
              JTable table = new JTable(data, colNames);

              JScrollPane scrollPane = new JScrollPane(table);
              scrollPane.setPreferredSize(new Dimension(450, 100));
              getContentPane().add(scrollPane);

              // use a combo box as cell renderer for the 2nd column
              JComboBox cb = new JComboBox();
              cb.setEditable(true);
              cb.addItem("chlorid");
              cb.addItem("HCl");
              cb.addItem("water");
              cb.addItem("NaCl");
              cb.addItem("crystall water");
              cb.addItem("anything");
              TableColumn col = table.getColumnModel().getColumn(1);
              col.setCellEditor(new DefaultCellEditor(cb));


              addWindowListener(new WindowAdapter() {
                  public void windowClosing(WindowEvent evt) {
                      System.exit(0);
                  }
              });
          }

          public static void main(String[] args) {
              ComboEditorTest test = new ComboEditorTest();
              test.pack();
              test.setVisible(true);
          }

      }
      ---- end ComboEditorTest.java ------
      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      Press enter to accept the changes then press tab to move off the cell

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              Assignee:
              skodandarama Suman Rajkumaar Kodandarama
              Reporter:
              webbuggrp Webbug Group
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                Created:
                Updated:
                Resolved: