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  1. JDK
  2. JDK-4197293

vertical scroll bar in JScrollPane does not "page" correctly

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    • Subcomponent:
    • Resolved In Build:
      1.2.2
    • CPU:
      generic, sparc
    • OS:
      solaris_2.6

      Description

      When using the JScrollPane to view a big JTable, it is difficult to page
      through the table because clicking in the vertical scrollbar advances
      forward more than a page full (i.e. it skips data). In order to see all the
      table data, you must either scroll forward a line at a time (very painful) or guess how far to move the scroll bar in order to see the next page completely.

      here is the test program:
      import java.awt.Frame;
      import com.sun.java.swing.BoxLayout;
      import com.sun.java.swing.JScrollPane;
      import com.sun.java.swing.JPanel;
      import com.sun.java.swing.JTable;
      import com.sun.java.swing.table.AbstractTableModel;

      public class Test {
          public static void main(String[] args) {
              Frame frm = new Frame("Test");

              JScrollPane spane = new JScrollPane();
              frm.add(spane);

              JPanel panel = new JPanel();
              panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
              spane.getViewport().add(panel);

              JTable tbl = new JTable(
                  new AbstractTableModel() {
                     public int getColumnCount() { return 10; }
                     public int getRowCount() { return 1000;}
                     public Object getValueAt(int row, int col) { return new
                                                                  Integer(row*col)
      ; }
                  }
              );
              panel.add(tbl);

              frm.pack();
              frm.show();
          }
      }

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            Assignee:
            sswingtrsunw Swingtraq Swingtraq (Inactive)
            Reporter:
            duke J. Duke (Inactive)
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              Created:
              Updated:
              Resolved:
              Imported:
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