Question

用myeclipse运行JAVA程序，JAVA Application后只出现gap=4,gap=0;

为什么？？？
先出现Error exist in required project(s)

点Proceed后就这样了





Answer 1

package cn;

public class Login extends javax.swing.JFrame {

/** Creates new form Login */
public Login() {
initComponents();
}

//GEN-BEGIN:initComponents
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {

jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
jComboBox1 = new javax.swing.JComboBox();
jLabel6 = new javax.swing.JLabel();
jComboBox2 = new javax.swing.JComboBox();
jLabel7 = new javax.swing.JLabel();
jLabel8 = new javax.swing.JLabel();
jTextField4 = new javax.swing.JTextField();
jLabel9 = new javax.swing.JLabel();
jTextField5 = new javax.swing.JTextField();
jLabel10 = new javax.swing.JLabel();
jCheckBox1 = new javax.swing.JCheckBox();
jCheckBox2 = new javax.swing.JCheckBox();
jCheckBox3 = new javax.swing.JCheckBox();
jCheckBox4 = new javax.swing.JCheckBox();
jCheckBox5 = new javax.swing.JCheckBox();
jCheckBox6 = new javax.swing.JCheckBox();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jPasswordField1 = new javax.swing.JPasswordField();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

jLabel1.setText("\u7528\u6237\u6ce8\u518c");

jLabel2.setText("\u59d3\u540d:");

jLabel3.setText("\u6027\u522b:");

jLabel4.setText("\u5bc6\u7801:");

jLabel5.setText("\u51fa\u751f:");

jComboBox1
.setModel(new javax.swing.DefaultComboBoxModel(new String[] {
"1990", "1991", "1992", "1993", "1994", "1995", "1996",
"..." }));

jLabel6.setText("\u5e74");

jComboBox2
.setModel(new javax.swing.DefaultComboBoxModel(new String[] {
"1", "2", "3", "4", "5", "6", "7", "8", "9", "10",
"11", "12" }));

jLabel7.setText("\u6708");

jLabel8.setText("\u7535\u8bdd:");

jLabel9.setText("\u90ae\u7bb1:");

jLabel10.setText("\u5174\u8da3:");

jCheckBox1.setText("\u5403");

jCheckBox2.setText("\u559d");

jCheckBox3.setText("\u73a9");

jCheckBox4.setText("\u4e50");

jCheckBox5.setText("\u7968");

jCheckBox6.setText("\u8bfb");

jButton1.setText("\u6ce8\u518c");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});

追问

我要的是解释，这什么东西