Java by API/javax.swing.table/TableCellRenderer

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extends JSlider implements TableCellRenderer

   <source lang="java">

import java.awt.BorderLayout; import java.awt.Color; import java.awt.ruponent; import java.awt.GridLayout; import java.awt.Point; import java.awt.Rectangle; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.EventObject; import java.util.Vector; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JSlider; import javax.swing.JTable; import javax.swing.JWindow; import javax.swing.SwingConstants; import javax.swing.event.CellEditorListener; import javax.swing.event.ChangeEvent; import javax.swing.table.AbstractTableModel; import javax.swing.table.TableCellEditor; import javax.swing.table.TableCellRenderer; public class MainClass extends JFrame {

 public MainClass() {
   super("Customer Editor Test");
   setSize(600, 160);
   setDefaultCloseOperation(EXIT_ON_CLOSE);
   MixerModel test = new MixerModel();
   JTable jt = new JTable(test);
   jt.setDefaultRenderer(Volume.class, new VolumeRenderer());
   JScrollPane jsp = new JScrollPane(jt);
   getContentPane().add(jsp, BorderLayout.CENTER);
 }
 public static void main(String args[]) {
   MainClass mt = new MainClass();
   mt.setVisible(true);
 }

} class MixerModel extends AbstractTableModel {

 String headers[] = { "Track", "Start", "Stop", "Left Volume", "Right Volume" };
 Class columnClasses[] = { String.class, String.class, String.class, Volume.class, Volume.class };
 Object data[][] = { { "Bass", "0:00:000", "1:00:000", new Volume(56), new Volume(56) },
     { "Strings", "0:00:000", "0:52:010", new Volume(72), new Volume(52) },
     { "Brass", "0:08:000", "1:00:000", new Volume(99), new Volume(0) },
     { "Wind", "0:08:000", "1:00:000", new Volume(0), new Volume(99) }, };
 public int getRowCount() {
   return data.length;
 }
 public int getColumnCount() {
   return headers.length;
 }
 public Class getColumnClass(int c) {
   return columnClasses[c];
 }
 public String getColumnName(int c) {
   return headers[c];
 }
 public boolean isCellEditable(int r, int c) {
   return true;
 }
 public Object getValueAt(int r, int c) {
   return data[r][c];
 }
 public void setValueAt(Object value, int r, int c) {
   if (c >= 3) {
     ((Volume) data[r][c]).setVolume(value);
   } else {
     data[r][c] = value;
   }
 }

} class Volume {

 private int volume;
 public Volume(int v) {
   setVolume(v);
 }
 public Volume() {
   this(50);
 }
 public void setVolume(int v) {
   volume = (v < 0 ? 0 : v > 100 ? 100 : v);
 }
 public void setVolume(Object v) {
   if (v instanceof String) {
     setVolume(Integer.parseInt((String) v));
   } else if (v instanceof Number) {
     setVolume(((Number) v).intValue());
   } else if (v instanceof Volume) {
     setVolume(((Volume) v).getVolume());
   }
 }
 public int getVolume() {
   return volume;
 }
 public String toString() {
   return String.valueOf(volume);
 }

} class VolumeRenderer extends JSlider implements TableCellRenderer {

 public VolumeRenderer() {
   super(SwingConstants.HORIZONTAL);
   setSize(115, 15);
 }
 public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected,
     boolean hasFocus, int row, int column) {
   if (value == null) {
     return this;
   }
   if (value instanceof Volume) {
     setValue(((Volume) value).getVolume());
   } else {
     setValue(0);
   }
   return this;
 }

}

      </source>
   
  
 
  



implements TableCellRenderer

   <source lang="java">

import java.awt.BorderLayout; import java.awt.ruponent; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.UIManager; import javax.swing.border.Border; import javax.swing.table.TableCellRenderer; import javax.swing.table.TableColumn; import javax.swing.table.TableColumnModel; public class MainClass {

 public static void main(String args[]) {
   String rows[][] = { { "A", "a" }, { "B", "b" }, { "E", "e" } };
   String headers[] = { "Upper", "Lower" };
   JFrame frame = new JFrame("Label Header");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JTable table = new JTable(rows, headers);
   JScrollPane scrollPane = new JScrollPane(table);
   Border headerBorder = UIManager.getBorder("TableHeader.cellBorder");
   JLabel headerLabel1 = new JLabel(headers[0], JLabel.CENTER);
   headerLabel1.setBorder(headerBorder);
   JLabel headerLabel2 = new JLabel(headers[1], JLabel.CENTER);
   headerLabel2.setBorder(headerBorder);
   TableCellRenderer renderer = new JComponentTableCellRenderer();
   TableColumnModel columnModel = table.getColumnModel();
   TableColumn column0 = columnModel.getColumn(0);
   TableColumn column1 = columnModel.getColumn(1);
   column0.setHeaderRenderer(renderer);
   column0.setHeaderValue(headerLabel1);
   column1.setHeaderRenderer(renderer);
   column1.setHeaderValue(headerLabel2);
   frame.add(scrollPane, BorderLayout.CENTER);
   frame.setSize(300, 150);
   frame.setVisible(true);
 }

} class JComponentTableCellRenderer implements TableCellRenderer {

 public Component getTableCellRendererComponent(JTable table, Object value, 
     boolean isSelected, boolean hasFocus, int row, int column) {
   return (JComponent)value;
 }

}

      </source>