一个JTable的例子

一个JTable的例子

import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.JFrame; import javax.swing.JOptionPane; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.table.AbstractTableModel; public class TableDemo extends JFrame { private boolean DEBUG = true; public TableDemo(){ super("RecorderOfWorkers"); MyTableModel myModel=new MyTableModel(); JTable table=new JTable(myModel); table.setPreferredScrollableViewportSize(new Dimension(500,70)); JScrollPane scrollPane=new JScrollPane(table); getContentPane().add(scrollPane,BorderLayout.CENTER); addWindowListener(new WindowAdapter(){ public void windowClosing(WindowEvent e){ System.exit(0); } }); } class MyTableModel extends AbstractTableModel{ final String[] columnNames ={"First Name","Postion","TelePhone","MonthlyPay","Married"}; final Object[][] data={{"Wangdong","Executive","0106879231",new Integer(5000),new Boolean(false)}, {"LiHong","Secretay","0106879231",new Integer(3500),new Boolean(true)}, {"ZhaoXin","Safeguard","0106879231",new Integer(4500),new Boolean(false)}, {"Chenlei","Saleman","0106879231",new Integer(4000),new Boolean(false)}}; public int getColumnCount() { // TODO Auto-generated method stub return columnNames.length; } public int getRowCount() { // TODO Auto-generated method stub return data.length; } public String getColumnName(int col){ return columnNames[col]; } public Object getValueAt(int row, int col) { // TODO Auto-generated method stub 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; } } 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()+")"); } if(data[0][col] instanceof Integer&&!(value instanceof Integer)){ try{ data[row][col]=new Integer(value.toString()); fireTableCellUpdated(row,col); }catch(NumberFormatException e){ JOptionPane.showMessageDialog(TableDemo.this, "The /""+getColumnName(col)+"/"column accepts only integer values."); } }else{ 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("---------------------------"); } } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub TableDemo frame=new TableDemo(); frame.pack(); frame.setVisible(true); } }