Java JTable用法

本文概述

• JTable类声明
• Java JTable示例
• 具有ListSelectionListener的Java JTable示例

JTable类用于以表格形式显示数据。它由行和列组成。

JTable类声明

我们来看一下javax.swing.JTable类的声明。

常用的构造函数：

Java JTable示例

import javax.swing.*;  
public class TableExample {  
    JFrame f;  
    TableExample(){  
    f=new JFrame();  
    String data[][]={ {"101", "Amit", "670000"}, {"102", "Jai", "780000"}, {"101", "Sachin", "700000"}};  
    String column[]={"ID", "NAME", "SALARY"};       
    JTable jt=new JTable(data, column);  
    jt.setBounds(30, 40, 200, 300);        
    JScrollPane sp=new JScrollPane(jt);  
    f.add(sp);        
    f.setSize(300, 400);  
    f.setVisible(true);  
}  	
public static void main(String[] args) {  
    new TableExample();  
}  
}

输出：

具有ListSelectionListener的Java JTable示例

import javax.swing.*;  
import javax.swing.event.*;
public class TableExample {  
	  public static void main(String[] a) {
		    JFrame f = new JFrame("Table Example");
		    String data[][]={ {"101", "Amit", "670000"}, {"102", "Jai", "780000"}, {"101", "Sachin", "700000"}};  
                            String column[]={"ID", "NAME", "SALARY"};       
                            final JTable jt=new JTable(data, column);  
		    jt.setCellSelectionEnabled(true);
		    ListSelectionModel select= jt.getSelectionModel();
		    select.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
		    select.addListSelectionListener(new ListSelectionListener() {
		      public void valueChanged(ListSelectionEvent e) {
		        String Data = null;
		        int[] row = jt.getSelectedRows();
		        int[] columns = jt.getSelectedColumns();
		        for (int i = 0; i < row.length; i++) {
		          for (int j = 0; j < columns.length; j++) {
		            Data = (String) jt.getValueAt(row[i], columns[j]);
		          } }
		        System.out.println("Table element selected is: " + Data);  
		      }     
		    });
		    JScrollPane sp=new JScrollPane(jt);  
		    f.add(sp);
		    f.setSize(300, 200);
		    f.setVisible(true);
		  }
		}

输出：

如果在“名称”列中选择一个元素, 则该元素的名称将显示在控制台上：

Table element selected is: Sachin