Jlabel、setVisible、JRadioButton、

lblNewLabel.setIcon(new ImageIcon("D:\\Desktop\\887384.JPG"));

2、new DengLu().setVisible(true);     //跳转到DengLu页面

3、textField_4.setText(textField_3.getText());  //textField_4显示textField_3中的内容 int a=Integer.parseInt(textField_4.getText()); int b=Integer.parseInt(textField_7.getText());//字符转整形 int c=b-a; //String.valueOf(c);//整型转字符串 textField_8.setText((String.valueOf(c)));//

4、//单选框的实现

JRadioButton rdbtnNewRadioButton = new JRadioButton("微信登录"); rdbtnNewRadioButton.setBounds(29, 169, 121, 23); contentPane.add(rdbtnNewRadioButton); JRadioButton rdbtnNewRadioButton_1 = new JRadioButton("qq登录"); rdbtnNewRadioButton_1.setBounds(147, 169, 121, 23); contentPane.add(rdbtnNewRadioButton_1); ButtonGroup group=new ButtonGroup(); group.add(rdbtnNewRadioButton); group.add(rdbtnNewRadioButton_1);