Jframe多次显示（Java Netbeans）
[英]Jframe shows multiple times(Java Netbeans)
问题描述
Oh hey, I'm a java newbie, I'm trying to make my program shows up a new page called "NewCode" from "SelectTimeAndDate" page by clicking Confirm button from the "SelectTimeAndDate" page. 
哦，嘿，我是Java新手，我想通过单击“ SelectTimeAndDate”页面上的“确认”按钮，使我的程序从“ SelectTimeAndDate”页面显示一个名为“ NewCode”的新页面。 But the NewCode page keep shows up multiple times continuously instead of one time. 但是NewCode页面保持连续显示多次而不是一次。
Here is my SelectTimeAndDate's code: 这是我的SelectTimeAndDate的代码：
package car.park.auto.pay.system;
import java.io.*;
import java.lang.*;
import java.util.*;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
public class SelectTimeAndDate extends javax.swing.JFrame {
private JTextField hour;
private JTextField minute;
private JTextField second;
private JTextField date;
private JTextField month;
private JTextField year;
public SelectTimeAndDate() {
initComponents();
}
@SuppressWarnings("unchecked")
// <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();
confirmBut = new javax.swing.JButton();
cancelBut1 = new javax.swing.JButton();
hourField = new javax.swing.JTextField();
dateField = new javax.swing.JTextField();
minuteField = new javax.swing.JTextField();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
jLabel6 = new javax.swing.JLabel();
jLabel7 = new javax.swing.JLabel();
monthField = new javax.swing.JTextField();
secondField = new javax.swing.JLabel();
hour2 = new javax.swing.JTextField();
hour5 = new javax.swing.JTextField();
yearField = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Roy's Car Parking Auto Pay Station System");
jLabel1.setText("Please input time and date that you are entering:");
jLabel2.setText("Input time (hh:mm:ss):");
jLabel2.setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));
jLabel3.setText("Input date (dd/mm/yy):");
confirmBut.setText("Confirm");
confirmBut.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
confirmButActionPerformed(evt);
}
});
cancelBut1.setText("Cancel");
cancelBut1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cancelBut1ActionPerformed(evt);
}
});
hourField.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
hourFieldActionPerformed(evt);
}
});
jLabel4.setText("Hour:");
jLabel5.setText("Date:");
jLabel6.setText("Minute:");
jLabel7.setText("Month:");
secondField.setText("Second:");
yearField.setText("Year:");
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(87, 87, 87)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jLabel3, javax.swing.GroupLayout.DEFAULT_SIZE, 128, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel5)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(dateField))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel4)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(hourField, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addComponent(confirmBut, javax.swing.GroupLayout.PREFERRED_SIZE, 103, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(22, 22, 22)))
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel6)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(minuteField, javax.swing.GroupLayout.PREFERRED_SIZE, 37, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel7)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(monthField)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(secondField)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(hour2, javax.swing.GroupLayout.PREFERRED_SIZE, 37, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(14, 14, 14)
.addComponent(yearField)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(hour5, javax.swing.GroupLayout.PREFERRED_SIZE, 39, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(13, 13, 13)
.addComponent(cancelBut1, javax.swing.GroupLayout.PREFERRED_SIZE, 103, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(56, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jLabel1)
.addGap(121, 121, 121))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addContainerGap(35, Short.MAX_VALUE)
.addComponent(jLabel1)
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(hourField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(minuteField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel4)
.addComponent(jLabel6))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(dateField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel5)
.addComponent(monthField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel7)))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(hour2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(secondField))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(hour5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(yearField))))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(confirmBut, javax.swing.GroupLayout.PREFERRED_SIZE, 37, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(cancelBut1, javax.swing.GroupLayout.PREFERRED_SIZE, 37, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(28, 28, 28))
);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(40, 40, 40))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(35, 35, 35)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(69, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void hourFieldActionPerformed(java.awt.event.ActionEvent evt) {
}
private void cancelBut1ActionPerformed(java.awt.event.ActionEvent evt) {
new Menu().setVisible(true);
this.dispose();// TODO add your handling code here:
}
private void confirmButActionPerformed(java.awt.event.ActionEvent evt) {
String hour=hourField.getText();
String minute=minuteField.getText();
String second=secondField.getText();
String date=dateField.getText();
String month=monthField.getText();
String year=yearField.getText();
if(hour.isEmpty()||minute.isEmpty()||second.isEmpty()||date.isEmpty()||month.isEmpty()||year.isEmpty()){
JOptionPane.showMessageDialog(this,String.format("Please input all the details!", JOptionPane.ERROR_MESSAGE));
}else{
NewCode.getObj().setVisible(true);
this.dispose();
}
}
// Variables declaration - do not modify
private javax.swing.JButton cancelBut1;
private javax.swing.JButton confirmBut;
private javax.swing.JTextField dateField;
private javax.swing.JTextField hour2;
private javax.swing.JTextField hour5;
private javax.swing.JTextField hourField;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JPanel jPanel1;
private javax.swing.JTextField minuteField;
private javax.swing.JTextField monthField;
private javax.swing.JLabel secondField;
private javax.swing.JLabel yearField;
// End of variables declaration
}
And this is my NewCode's code 这是我的NewCode的代码
package car.park.auto.pay.system;
public class NewCode extends javax.swing.JFrame {
private static NewCode obj = null;
static int SetVisible() {
throw new UnsupportedOperationException("Not supported yet.");
}
public NewCode() {
initComponents();
java.awt.EventQueue.invokeLater(() -> {
new NewCode().setVisible(true);
});
}
public static NewCode getObj(){
if(obj==null){
obj=new NewCode();}
return obj;
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jButton2 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel3.setText("Please NOTE DOWN THIS CODE as when you are LEAVING you are REQUIRE to enter this code to complete the payment.");
jLabel4.setText("Code generated:");
jButton2.setText("Finish");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(262, 262, 262)
.addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 98, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGap(31, 31, 31)
.addComponent(jLabel3))
.addGroup(layout.createSequentialGroup()
.addGap(234, 234, 234)
.addComponent(jLabel4)))
.addContainerGap(24, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(54, 54, 54)
.addComponent(jLabel3)
.addGap(43, 43, 43)
.addComponent(jLabel4)
.addGap(33, 33, 33)
.addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 41, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(64, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
// Variables declaration - do not modify
private javax.swing.JButton jButton2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
// End of variables declaration
}
Please help me discover the problem, thank you! 请帮助我发现问题，谢谢！
EDIT: I've found the problem already! 编辑：我已经发现问题了！ I've corrected it by setting 我已经通过设置更正了它
new NewCode().setVisible(true);
to 至
new NewCode().setVisible(false);
1 个解决方案
解决方案1
0 已采纳 2015-01-24 17:14:14
Look at your constructor 看你的构造函数
public NewCode() {
initComponents();
java.awt.EventQueue.invokeLater(() -> {
new NewCode().setVisible(true);
});
}
You create a new NewCode Object everytime you create a new NewCode object, ending in an endless loop. 每次创建新的NewCode对象时，都会创建一个新的NewCode对象，以无穷循环结束。 Why don't yout simply make the constructor like this? 为什么不简单地像这样构造构造函数呢？
public NewCode() {
initComponents();
this.setVisible(true);
}
Also, why do you write the complete package name in front of every swing class? 另外，为什么还要在每个swing类的前面写完整的包名称？ Wouldn't importing them once be easier? 一次导入就不会容易了吗？
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.
相关问题
Java mouseClicked显示JFrame在5〜10次之间而不是1次 - Java mouseClicked shows JFrame between 5 ~ 10 times instead of 1
Java清除netbeans中的jFrame - Java clearing a jFrame in netbeans
Java Netbeans中的JFrame中的数据未更新 - Data not updating in JFrame in Java Netbeans
在Java JFrame上添加图像-Netbeans - Adding images on Java JFrame - Netbeans
JFrame不显示组件或在Java Swing中多次使用actionListener - JFrame either not displaying components or using multiple times actionListener in Java Swing
使用Netbeans在Java的JPanel或JFrame中放置地图 - Place a Map in JPanel or JFrame in Java using Netbeans
将JFrame或JDialog添加到java netbeans应用程序 - Add JFrame or JDialog to java netbeans application
在JFrame形式的Java NetBeans上显示图像 - Display image on JFrame form Java NetBeans
在Java应用程序中打印JFrame（使用Netbeans） - Print JFrame in Java Application (Using Netbeans)
使用netbeans更改jframe（“ java”）徽标 - change jframe(“java”) logo using netbeans
相关标签