Listing 1:
import com.sun.java.swing.*;
import com.sun.java.swing.table.*;
import java.util.*;

public class ComponentInspectorTableModel extends DefaultTableModel{

public ComponentInspectorTableModel(){
  super();
  }

public ComponentInspectorTableModel(int numColumns,
int numRows){
    super(numColumns, numRows);
  }

public ComponentInspectorTableModel(Object[] columns,
int numRows){
    super(columns, numRows);
  }

public ComponentInspectorTableModel(Object[][] columns, Object[] rows){
    super(columns, rows);
  }

public ComponentInspectorTableModel(Vector columns,
int numRows){
    super(columns, numRows);
  }

public ComponentInspectorTableModel(Vector columns,
Vector rows){
    super(columns, rows);
  }

public boolean isCellEditable(int row, int column){
    if (column ==0){
      return false;
    }
    else{
      return super.isCellEditable(row, column);
    }
  }

}

Listing 2:
public class SimpleValueRenderer implements
TableCellRenderer{
  Jpanel cell = new Jpanel();
  Jlabel label = new Jlabel();

  public SimpleValueRenderer (){
    cell.setBackground(Color.darkGray);
    cell.add(label);
  }

public Component getTableCellRendererComponent(JTable
table, Object value,
        boolean isSelected,
        boolean hasFocus,
        int row, int col){
    label.setText(value.toString());
    return cell;
  }
}

Listing 3:
  JTable aTable = new JTable
..
..

//previous initialization code...
  aTable.setDefaultCellRenderer(String.class,new
  SimpleValueRenderer());

Listing 4:
public class BooleanValueRenderer extends JCheckBox
implements TableCellRenderer{
  public BooleanValueRenderer (){
    super();
  }

public Component getTableCellRendererComponent(JTable table, Object value,
        boolean isSelected,
        boolean hasFocus,
        int row, int col){
    this.SetValue((Boolean)value);
    return this;
  }
}

and to use it...

..
..

//previous initialization code...
  aTable.setDefaultCellRenderer(Boolean.class,new
  BooleanValueRenderer ());

Listing 5:
public void getClassInfo(Object aValue){

  Class valueClass = aValue.getClass();

//lets write out the name of the class to command line
  System.out.println(valueClass.getName());

//lets get all the methods and then print out their names
//to command line
  Method[] classMethods = valueClass.getDeclaredMethods();

  for (int i=0; i < classMethods.length;i++){
    Method aMethod = classMethods[i];
//print out the name
    System.out.println(aMethod.getName());
  }

}

Listing 6:
Class[] args = new Class[2];
args[0] = Object.class;
args[1] = Integer.TYPE;
//you have to do this because the method takes an int
//not an Integer
try{
  Method setElementAtMeth = valueClass.getDelaredMethod("setElementAt", args);
}
catch (Exception ex){
  ex.printStackTrace();
}

Listing 7:
Object[] vals = new Object[2];
vals [0] = new String("Hello there");
vals [1] = new Integer(0);
//Java will correctly convert this to an int

try{
 setElementAtMeth.invoke(aValue, vals);
//method gets invoked !
}
catch (Exception ex){
  ex.printStackTrace();
}

Listing 8:
public void inspectAButton(Jbutton aBtn){
  try{
    BeanInfo beanInfo = Introspector.getBeanInfo(aBtn);
    PropertyDescriptor[] props = beanInfo.getPropertyDescrip     tors();
     if (props != null){
       for (int i=0; i < props.length; i++){
        PropertyDescriptor pd = props[i];
        System.out.println("Property " + pd.getDisplayName()        + " has read method: " + pd.getReadMethod().get       Name() + " and write method: " +
        pd.getWriteMethod().getName());
       }
     }
  }
  catch(Exception ex){
    ex.printStackTrace();
  }
}