我是Java的新手。我试图自己找到解决方案但不确定如何继续。
我有2个Jframe（JF1，JF2），我需要将一个变量从JF1传递给JF2
这是JF1的代码：注意：我需要值x，值x从JTextfeild获取它。
任何人都可以帮助我
/*
* 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，我需要传递Var z。
答案 0 :(得分：2)
使用参数int z创建构造函数：
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;
}
}
在创建z - ＆gt;时传递变量JF2 JF2 jCreate = new JF2(z);或使用setter jCreate.setZ(z);