小编JFe*_*191的帖子

JPanel没有出现,我把.setVisible但是......它没有出现,它构建但它没有显示我只是这个编程部分的初学者.

    package calculatorv3;


    public class CalculatorForm extends javax.swing.JPanel {
        private static final long serialVersionUID = 1L;


       public CalculatorForm() {
            initComponents();
       }

        /**
         * This method is called from within the constructor to initialize the form.
         * WARNING: Do NOT modify this code. The content of this method is always
         * regenerated by the Form Editor.
         */
        @SuppressWarnings("unchecked")

        private void initComponents() {

            jTextField2 = new javax.swing.JTextField();
            jTextField3 = new javax.swing.JTextField();
            jTextField4 = new javax.swing.JTextField();
            jButton2 = new javax.swing.JButton();
            jButton3 = new …