extends ComponentAdapter : ComponentListener « Swing Event « Java Tutorial

1. Java Tutorial
2. Swing Event
3. ComponentListener

import java.awt.BorderLayout;
import java.awt.Point;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JViewport;
import javax.swing.SwingUtilities;
import javax.swing.table.AbstractTableModel;

public class RowAdder extends JFrame {
  SimpleModel tableData = new SimpleModel();
  JTable table = new JTable(tableData);
 
  public static void main(String[] args) {
    RowAdder ra = new RowAdder();
    ra.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    ra.setSize(400, 300);
    ra.setVisible(true);
  }

  public RowAdder() {
    setLayout(new BorderLayout());
    table.addComponentListener(new TableScroller());
    add(new JScrollPane(table), BorderLayout.CENTER);
  }
  class TableScroller extends ComponentAdapter {

    public void componentResized(ComponentEvent event) {
      int lastRow = tableData.getRowCount() - 1;
      int cellTop = table.getCellRect(lastRow, 0, true).y;
      JScrollPane jsp = (JScrollPane) SwingUtilities.getAncestorOfClass(
          JScrollPane.class, table);
      JViewport jvp = jsp.getViewport();
      int portHeight = jvp.getSize().height;
      int position = cellTop
          - (portHeight - table.getRowHeight() - table.getRowMargin());
      if (position >= 0) {
        jvp.setViewPosition(new Point(0, position));
      }
    }
  }
}
class SimpleModel extends AbstractTableModel {

  public void addText(String text) {
    fireTableDataChanged();
  }

  public int getRowCount() {
    return 100;
  }

  public int getColumnCount() {
    return 3;
  }

  public Object getValueAt(int row, int column) {
    return row+" "+column;
  }

}

15.10.ComponentListener
	15.10.1.	How to Write a Component Listener
	15.10.2.	ComponentListener and ComponentEvent
	15.10.3.	extends ComponentAdapter
	15.10.4.	A ComponentAdapter.
	15.10.5.	A position of a window on the screen.
	15.10.6.	Installs/resets a ComponentListener to resize the given window to minWidth/Height if needed