textareatest.java

一个GUI编程的例子 一个GUI编程的例子

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.event.*;



public class TextAreaTest

{  

	public static void main(String[] args)

	{  

		TextAreaFrame frame = new TextAreaFrame();

		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		frame.show();

	}

}



class TextAreaFrame extends JFrame

{

	public static final int WIDTH = 350;

	public static final int HEIGHT = 350;



	private JTextArea noWrapArea;

	private JTextArea wrapArea;

	private JTextArea scrollArea;

	public TextAreaFrame()

	{

		setTitle("TextAreaTest");

		setSize(WIDTH, HEIGHT);



		Container contentPane = getContentPane();



		//建立容纳文本区的面板

		JPanel textPanel = new JPanel();



		//新建无回绕的文本区，行数为5，列数为20

		noWrapArea = new JTextArea("nowrap", 5, 20);

		//新建有回绕的文本区，行数为5，列数为20

		wrapArea = new JTextArea("wraparea", 5, 20);

		wrapArea.setLineWrap(true);

		//新建带滚动条的文本区，行数为5，列数为20

		scrollArea = new JTextArea("scrollarea", 5, 20);

		//将文本区插入到滚动窗格中

		JScrollPane scrollPane = new JScrollPane(scrollArea);



		textPanel.add(noWrapArea);

		textPanel.add(wrapArea);

		//将滚动窗格加入到框架中

		textPanel.add(scrollPane);



		contentPane.add(textPanel);

	}



	

}