JTextArea DEMO

最新推荐文章于 2021-03-27 22:05:45 发布

转载最新推荐文章于 2021-03-27 22:05:45 发布 · 731 阅读

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package HeadFirstJava;
import javax.swing.*;

import java.awt.*;
import java.awt.event.*;

public class TextArea1 implements ActionListener {
    JTextArea text;
    
    public static void main(String[] args) {
        TextArea1 gui = new TextArea1();
        gui.go();
    }
    
    public void go() {
        JFrame frame = new JFrame();
        JPanel panel = new JPanel();
        JButton button = new JButton("Just Click It");
        button.addActionListener(this);
        text = new JTextArea(10, 20);
        text.setLineWrap(true);
        
        JScrollPane scroller = new JScrollPane(text);
        scroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
        scroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
        
        panel.add(scroller);
        
        frame.getContentPane().add(BorderLayout.CENTER, panel);
        frame.getContentPane().add(BorderLayout.SOUTH, button);
        
        frame.setSize(350,  300);
        frame.setVisible(true);
    }

    @Override
    public void actionPerformed(ActionEvent event) {
        // TODO Auto-generated method stub
        text.append("button clicked\n");
    }
}