Java swing怎么给JTable加表头，

// 创建表格：直接有表头

TableModel model = new DefaultTableModel(//

   new Object[][] { { "11", "12" }, { "21", "22" } },// 数据

   new Object[] { "第一列", "第二列" } // 表头

)

JTable table=new JTable(model)

import java.awt.*

import javax.swing.*

public class Test

{

private JFrame jframe

private JTable jtable

public Test()

{

jframe=new JFrame("表格测试")

Object[][] num={{1,2,3},{4,5,6}}

String[] name={"字段一","字段二","字段三"}

jtable=new JTable(num,name)

jtable.setPreferredScrollableViewportSize(new Dimension(550,30))

jframe.getContentPane().add(jtable.getTableHeader(),BorderLayout.NORTH)

jframe.getContentPane().add(jtable,BorderLayout.CENTER)

jframe.pack()

jframe.setLocation(300,300)

jframe.setVisible(true)

jframe.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE)

}

public static void main(String[] ags)

{

Test t=new Test()

}

}

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