JTable用法示例

import java.awt.Dimension;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JPanel;
import javax.swing.JTable;
import java.awt.Color;
import java.awt.GridLayout;
import javax.swing.table.TableColumn;

public class JTableDemo
{
public static void main (String[] args)
{
/*
构造函数有很多下面先介绍几个:
JTable()
JTable(int numRows, int numColumns)
JTable(Object[][] rowData, Object[] columnNames)
*/

JTable example1 = new JTable ();//看不到但存在

JTable example2 = new JTable (8, 6);


final Object[] columnNames = {"姓名", "性别", "家庭地址",//列名最好用final修饰
"电话号码", "生日", "工作", "收入", "婚姻状况","恋爱状况"};
Object[][] rowData = {
{"ddd", "男", "江苏南京", "1378313210", "03/24/1985", "学生", "寄生中", "未婚", "没"},
{"eee", "女", "江苏南京", "13645181705", "xx/xx/1985", "家教", "未知", "未婚", "好象没"},
{"fff", "男", "江苏南京", "13585331486", "12/08/1985", "汽车推销员", "不确定", "未婚", "有"},
{"ggg", "女", "江苏南京", "81513779", "xx/xx/1986", "宾馆服务员", "确定但未知", "未婚", "有"},
{"hhh", "男", "江苏南京", "13651545936", "xx/xx/1985", "学生", "流放中", "未婚", "无数次分手后没有"}
};


JTable friends = new JTable (rowData, columnNames);
friends.setPreferredScrollableViewportSize(new Dimension(600, 100));//设置表格的大小
friends.setRowHeight (30);//设置每行的高度为20
friends.setRowHeight (0, 20);//设置第1行的高度为15
friends.setRowMargin (5);//设置相邻两行单元格的距离
friends.setRowSelectionAllowed (true);//设置可否被选择.默认为false
friends.setSelectionBackground (Color.white);//设置所选择行的背景色
friends.setSelectionForeground (Color.red);//设置所选择行的前景色
friends.setGridColor (Color.black);//设置网格线的颜色
friends.selectAll ();//选择所有行
friends.setRowSelectionInterval (0,2);//设置初始的选择行,这里是1到3行都处于选择状态
friends.clearSelection ();//取消选择
friends.setDragEnabled (false);//不懂这个
friends.setShowGrid (false);//是否显示网格线
friends.setShowHorizontalLines (false);//是否显示水平的网格线
friends.setShowVerticalLines (true);//是否显示垂直的网格线
friends.setValueAt ("tt", 0, 0);//设置某个单元格的值,这个值是一个对象
friends.doLayout ();
friends.setBackground (Color.lightGray);


JScrollPane pane1 = new JScrollPane (example1);//JTable最好加在JScrollPane上
JScrollPane pane2 = new JScrollPane (example2);
JScrollPane pane3 = new JScrollPane (friends);
JPanel panel = new JPanel (new GridLayout (0, 1));
panel.setPreferredSize (new Dimension (600,400));
panel.setBackground (Color.black);
panel.add (pane1);
panel.add (pane2);
panel.add (pane3);

JFrame frame = new JFrame ("JTableDemo");
frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);

frame.setContentPane (panel);

frame.pack();
frame.show();

}
}