tablegrid.java

Grid數據顯示

package TableGrid;

import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import javax.swing.JScrollPane;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import javax.swing.JOptionPane;
import javax.swing.JApplet;
import java.awt.*;
import java.awt.event.*;

public class TableGrid extends JApplet 
{
   private boolean DEBUG = true;

   public void init()
	{
        MyTableModel myModel=new MyTableModel();
		JTable table = new JTable(myModel);
		table.setPreferredScrollableViewportSize(new Dimension(500,700));
		JScrollPane scrollPane=new JScrollPane(table);
		setContentPane(scrollPane);
	}
	class MyTableModel extends AbstractTableModel
	{
		final String[] columnNames = {"First Name","Last Name","Sport","# of Years","Vegetarian"};
        final Object[][] data={
			{"Mary","Campione","Snowboarding",new Integer(5),new Boolean(false)},
			{"Alison","Huml","Rowing",new Integer(3),new Boolean(true)},
			{"Kathy","Walrath","Chasing toddlers",new Integer(5),new Boolean(false)}
		};
        public int getColumnCount()
		{
			return columnNames.length;
		}
		public int getRowCount()
		{
			return data.length;
		}
		public String getColumnName(int col)
		{
			return columnNames[col];
		}
		public Object getValueAt(int row,int col)
		{
			return data[row][col];
		}
		public Class getColumnClass(int c)
		{
			return getValueAt(0,c).getClass();
		}
       public boolean isCellEditable(int row,int col)
		{
	/*	   if (col<2)
		   {
			   return false;
		   }else
			{
				   return true;
			}*/
			return false;
		}
		public void setValueAt(Object value,int row,int col)
		{
			 if (DEBUG)
			 {
				 System.out.println("Setting Value at "+row+","+col+"to"+value+"(an instance of"+value.getClass()+")");
			 }
			 data[row][col]=value;
			 fireTableCellUpdated(row,col);
			 if (DEBUG)
			 {
				 System.out.println("New value of data:");
				 printDebugData();
			 }
		}
		private void printDebugData()
		{
			int numRows = getRowCount();
			int numCols = getColumnCount();
			for (int i=0;i<numRows ;i++ )
			{
				System.out.print("     Row"+i+":");
				for (int j=0;j<numCols ;j++ )
				{
					System.out.print("     "+data[i][j]);
				}
				System.out.println();
			}
			System.out.println("----------------------------");
		}

	}


	public static void main(String[] args) 
	{
	    TableGrid applet = new TableGrid();
		JFrame aFrame = new JFrame("TableGrid");
		aFrame.addWindowListener(
			new WindowAdapter()
		     {
			        public void windowClosing(WindowEvent e)
				 {
						System.exit(0);
				 }
			 });
		aFrame.getContentPane().add(applet,BorderLayout.CENTER);
		aFrame.setSize(500,150);
		applet.init();
		applet.start();
		aFrame.setVisible(true);
//		System.out.println("Hello World!");
	}
}