本文介绍了如何将变量从一个 JFrame 传递到另一个 JFrame的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我是 Java 新手.我试图自己找到解决方案，但不知道如何继续.
I'm new to Java. I tried to find solution by myself but am not sure how to proceed.
我有 2 个 Jframes (JF1,JF2) ，我需要将一个变量从 JF1 传递给 JF2
I have 2 Jframes (JF1,JF2) , and I need to pass a variable from the JF1 to JF2
这是 JF1 的代码:注意:我需要值 x ，值 x 从 JTextfeild 获取.
This is the code for JF1 : Note : i need the value x , value x get it from JTextfeild.
谁能帮帮我
/*
* JF1.java
*
* Created on 04 مايو, 2012, 09:01 م
*/
package finalpro;
import java.io.BufferedInputStream;
import javax.swing.JOptionPane;
/**
*
* @author OmaR
*/
public class JF1 extends javax.swing.JFrame {
/** Creates new form JF1 */
public JF1() {
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.
*/
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
JB1 = new javax.swing.JButton();
JB3 = new javax.swing.JButton();
JB2 = new javax.swing.JButton();
jLabel2 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setText("Online Test Creater");
JB1.setText("Make");
JB1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
JB1ActionPerformed(evt);
}
});
JB3.setText("Quit");
JB3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
JB3ActionPerformed(evt);
}
});
JB2.setText("Reset");
JB2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
JB2ActionPerformed(evt);
}
});
jLabel2.setText("Number Of Question");
jTextField1.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jTextField1MouseClicked(evt);
}
});
jButton1.setText("Main");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 127, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(43, 43, 43)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 64, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 50, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 128, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(34, 34, 34)))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(JB2)
.addComponent(JB3)
.addComponent(JB1)
.addComponent(jButton1))
.addGap(30, 30, 30))
);
layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {JB1, JB2, JB3, jButton1});
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(19, 19, 19)
.addComponent(jLabel1))
.addGroup(layout.createSequentialGroup()
.addGap(31, 31, 31)
.addComponent(JB1)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel2)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton1))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(JB2)
.addGap(18, 18, 18)
.addComponent(JB3)))
.addContainerGap(37, Short.MAX_VALUE))
);
layout.linkSize(javax.swing.SwingConstants.VERTICAL, new java.awt.Component[] {JB1, JB2, JB3, jButton1});
pack();
}// </editor-fold>
private void JB3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
System.exit(0);
}
private void JB2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
jTextField1.setText("");
}
private void JB1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
JF1 JFBU = new JF1() ;
JF2 JCreate = new JF2();
this.setVisible(false);
int z = Integer.parseInt(jTextField1.getText());
if (z == 0)
{
JOptionPane.showMessageDialog(null, " You Enter 0 Please write anumber ");
}
else
{
JCreate.setVisible(true);
}
}
private void jTextField1MouseClicked(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
JOptionPane.showMessageDialog(null, "The Max Number of Questions Is 10");
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
JFmain JFm = new JFmain();
JFm.setVisible(true);
this.setVisible(false);
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new JF1().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton JB1;
private javax.swing.JButton JB2;
private javax.swing.JButton JB3;
private javax.swing.JButton jButton1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JTextField jTextField1;
// End of variables declaration
}
我有 JF2，我需要在它上面传递 Var z.
I have JF2, and I need to pass the Var z on it.
推荐答案
Create constructor with parameter int z:
Create constructor with parameter int z:
public class JF2 extends JFrame {
private int z;
public void setZ(int z) {
this.z = z;
}
public int getZ() {
return z;
}
public JF2(int z) {
this.z = z;
}
}
并在创建 JF2 -> JF2 jCreate = new JF2(z); 或使用 setter 时传递变量 z>jCreate.setZ(z);
And pass the variable z when you create the JF2 -> JF2 jCreate = new JF2(z); or using setter jCreate.setZ(z);
这篇关于如何将变量从一个 JFrame 传递到另一个 JFrame的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！