java Swing 之文本域控件的使用

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/** * java Swing 之文本域控件 * @author gao */package com.gao;import java.awt.BorderLayout;import java.awt.FlowLayout;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.JScrollPane;import javax.swing.JTextArea;import javax.swing.border.EmptyBorder;public class JTextAreaDemo extends JFrame {    public JTextAreaDemo(){    this.setTitle("文本域的使用");    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);    this.setBounds(100, 100, 250, 200);    JPanel contentPane=new JPanel();    contentPane.setBorder(new EmptyBorder(5,5,5,5));    contentPane.setLayout(new BorderLayout(0,0));    this.setContentPane(contentPane);    JPanel panel1=new JPanel();    FlowLayout f1_Pane1=(FlowLayout)panel1.getLayout();    f1_Pane1.setAlignment(FlowLayout.LEFT);    contentPane.add(panel1,BorderLayout.NORTH);    JLabel label=new JLabel("请输入您的评语：");    panel1.add(label);    JPanel panel2=new JPanel();    contentPane.add(panel2,BorderLayout.SOUTH);    JButton button1=new JButton("提交");    panel2.add(button1);    JButton button2=new JButton("关闭");    panel2.add(button2);    JScrollPane scrollPane=new JScrollPane();    contentPane.add(scrollPane,BorderLayout.CENTER);    JTextArea textArea=new JTextArea();    scrollPane.setViewportView(textArea);    this.setVisible(true);    }    public static void main(String[]args){    JTextAreaDemo example=new JTextAreaDemo();    }}
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