15.带滚动条的多行文本框

效果：

package com.lvshitech.gui;

import java.awt.BorderLayout;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

@SuppressWarnings("serial")
public class JTAreaAndJSPaneDemo extends JFrame {
	public JTAreaAndJSPaneDemo() {
		super("使用带滚动条的多行文本框");
		JTextArea textArea = new JTextArea(5, 15);
		textArea.setLineWrap(true);
		
		JScrollPane jsp = new JScrollPane(textArea);
		
		getContentPane().add(jsp, BorderLayout.CENTER);
		
		pack();
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setVisible(true);
	}
	public static void main(String[] args) {
		JTAreaAndJSPaneDemo tp = new JTAreaAndJSPaneDemo();
	}
}