使用JTable(2) – 設定欄位的寬度

※設定欄位的寬度

JTable的預設值是所有欄位的寬度都一樣，我們可以透過 setPreferredWidth 來設定每個欄位自己的寬度。

/* JTableDemo.java
* Created on 2008/9/5
* Author Tony
* Blog tonybox
*/

import java.awt.*;
import javax.swing.*;
import javax.swing.table.TableColumn;
import javax.swing.table.TableColumnModel;

public class JTableDemo2 extends JFrame {

String[] columnNames = {“姓名", “性別", “嗜好", “年齡", “是否抽煙"};

Object[][] data = {
{“張大同", “男", “看書", new Integer(15), new Boolean(false)},
{“李小婷", “女", “逛街", new Integer(19), new Boolean(false)},
{“陳小明", “男", “打電動", new Integer(13), new Boolean(false)},
{“王小華", “男", “打籃球", new Integer(20), new Boolean(false)},
{“孫小毛", “男", “被人扁", 45, true}};

JTableDemo2(){
super(“JTable Demo 2″);
Container c = getContentPane();
c.setLayout(new BorderLayout());

JTable table = new JTable(data,columnNames);
table.setFillsViewportHeight(false);
JScrollPane tscroll = new JScrollPane(table);

//取得這個table的欄位模型
TableColumnModel cModel = table.getColumnModel();

//取得這個table某個欄位的資訊
TableColumn columnName = cModel.getColumn(0);
TableColumn columnSex = cModel.getColumn(1);
TableColumn columnAge = cModel.getColumn(3);

//個別設定偏好的寬度
columnName.setPreferredWidth(200);
columnSex.setPreferredWidth(50);
columnAge.setPreferredWidth(50);

c.add(tscroll,BorderLayout.CENTER);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.pack();
this.setVisible(true);
}

public static void main(String[] args) {
new JTableDemo2();
}

}

參考資料:http://java.sun.com/docs/books/tutorial/uiswing/components/table.html