使用AbstractTableModel構造JTable的一個例子

package test;

import java.awt.Dimension;
import java.awt.BorderLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.awt.event.ActionEvent;

import javax.swing.JFrame;
import javax.swing.JTable;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.table.AbstractTableModel;
public class TableModelDemo2 implements ActionListener{

 JTable table = null;
 public TableModelDemo2(){

  JFrame frame = new JFrame(“DataModel”);
  JButton b1 = new JButton(“數學老師”);
  b1.addActionListener(this);
  JButton b2 = new JButton(“學生阿呆”);
  JPanel panel = new JPanel();
  b2.addActionListener(this);
  panel.add(b1);
  panel.add(b2);

  table = new JTable(new MyTable(1));
  table.setPreferredScrollableViewportSize(new Dimension(550,30));
  JScrollPane scrollPane = new JScrollPane(table);

  frame.getContentPane().add(panel,BorderLayout.NORTH);
  frame.getContentPane().add(scrollPane,BorderLayout.CENTER);
  frame.pack();
  frame.setVisible(true);

  frame.addWindowListener(new WindowAdapter(){

   public void windowClosing(WindowEvent e){

    System.exit(0);
   }
  });
 }
 public void actionPerformed(ActionEvent e){

  if(e.getActionCommand().equals(“學生阿呆”)){

   table.setModel(new MyTable(1));
  }
  if(e.getActionCommand().equals(“數學老師”)){

   table.setModel(new MyTable(2));
  }
  table.revalidate();
 }
 public static void main(String[] args){

  new TableModelDemo2();
 }
}
class MyTable extends AbstractTableModel{

 Object[][] p1 = {

  {“阿呆”,”1234″,new Integer(66),new Integer(50),new Integer(116),
  new Boolean(false),new Boolean(false)}
 };
 String[] n1 = {“姓名”,”學號”,”語文”,”數學”,”總分”,”及格”,”作弊”};
 Object[][] p2 = {

  {“阿呆”,”1234″,new Integer(50),new Boolean(false),new Boolean(false),”01234″},
  {“阿瓜”,”1234″,new Integer(75),new Boolean(true),new Boolean(false),”05678″}
 };
 String[] n2 = {“姓名”,”學號”,”數學”,”及格”,”作弊”,”電話”};
 int model = 1;//model為1顯示學生阿呆的要看的表格，model為2顯示數學老師要看的表格
 public MyTable(int i){

  model = i;
 }
 public int getColumnCount(){

  if(model==1){

   return n1.length;
  }else{

   return n2.length;
  }
 }
 public int getRowCount(){

  if(model==1){

   return p1.length;
  }else{

   return p2.length;
  }
 }
 public Object getValueAt(int row,int col){

  if(model==1){

   return p1[row][col];
  }else{

   return p2[row][col];
  }
 }
 public String getColumnName(int col){

  if(model==1){

   return n1[col];
  }else{

   return n2[col];
  }
 }
 public Class getColumnClass(int col){//復寫了getColumnClass方法后Boolean對象在表格中會以checkbox的形式顯示出來
  return getValueAt(0,col).getClass();
 }
}

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