GUI Swing 3.7 文本框

3.7 文本框

• 文本框

  public class TestTextField extends JFrame {
      public TestTextField() {
          Container contentPane = getContentPane();
  
          //文本框
          JTextField jTextField = new JTextField("你好，么么叽");
  
          contentPane.add(jTextField);
  
          setVisible(true);
          setBounds(200,200,200,100);
          setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
      }
  
      public static void main(String[] args) {
          new TestTextField();
      }
  }
  

• 密码框

  public class TestPswdText extends JFrame {
      public TestPswdText(){
          Container contentPane = getContentPane();
  
          //密码框
          JPasswordField jPasswordField = new JPasswordField();
          //也可以设置密码类型
          jPasswordField.setEchoChar('*');
  
          contentPane.add(jPasswordField);
  
          setVisible(true);
          setBounds(200,200,400,200);
          setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
      }
  
      public static void main(String[] args) {
          new TestPswdText();
      }
  }
  

• 文本域

  public class TestTextAre extends JFrame {
      public TestTextAre(){
          Container contentPane = getContentPane();
  
          //文本域
          JTextArea jTextArea = new JTextArea("么么叽",30,50);
  
          contentPane.add(jTextArea);
  
          setVisible(true);
          setBounds(200,200,400,200);
          setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
      }
  
      public static void main(String[] args) {
          new TestTextAre();
      }
  }