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有一個一名的J的框架，其中我已經把2個面板&卡布局由具有2塊板一個影像j幀驗證使用卡布局
給予兩個面板是
面板窗格> >如果我的打算叫PANEL1，是Panel2，其中·Panel3中所有的3塊板有樣的JTextField，JComboBox的等
按鈕面板>>在此的一些控制面板被按下時旁邊有按鈕旁邊&回（如果面板窗格顯示panel1然後）panel1控件得到驗證
像等
代碼如下
package Code;
/**
*
* @author Rohini
*/
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class InvoicePage extends JFrame implements ActionListener{
JLabel newInvoic, invoiceNol, invoiceNo;
JButton clinfoNext, payentryNext, termentryNext;
JButton clinfoBack, payentryBack, termentryBack;
JPanel buttonPane, clinfoBPane, payentryBPane, termentryBPane;
JPanel panelpane, client_info, invoice_entry, term_entry;
Container c = this.getContentPane();
CardLayout cardmain, cardbutton;
Font head = new Font("Times New Roman",Font.BOLD,20);
Font subheadb = new Font("Times New Roman",Font.BOLD,14);
Font subheadp = new Font("Times New Roman",Font.PLAIN,14);
public InvoicePage() throws HeadlessException {
super("Thane Bharat Sahakari Bank : New Invoice");
// initialization of variables
cardmain = new CardLayout();
cardbutton = new CardLayout();
newInvoic = new JLabel("New Invoice");
invoiceNol = new JLabel("Invoice No");
invoiceNo = new JLabel("DB Value of id");
clinfoNext = new JButton(" Next > > ");
payentryNext = new JButton(" Next > > ");
termentryNext = new JButton(" Next > > ");
clinfoBack = new JButton(" < < Back ");
payentryBack = new JButton(" < < Back ");
termentryBack = new JButton(" < < Back ");
buttonPane = new JPanel(cardbutton);
clinfoBPane = new JPanel(null);
payentryBPane = new JPanel(null);
termentryBPane = new JPanel(null);
panelpane = new JPanel(cardmain);
client_info = new clientInfo();
invoice_entry = new discription();
term_entry = new termentry();
// setting properties of variabels
panelpane.add(client_info,"Client_info");
panelpane.add(invoice_entry,"invoice_entry");
panelpane.add(term_entry,"term_entry");
buttonPane.add(clinfoBPane,"clinfoBpane");
buttonPane.add(payentryBPane,"payentryBPane");
buttonPane.add(termentryBPane,"termentryBPane");
clinfoBPane.add(clinfoBack);
clinfoBPane.add(clinfoNext);
payentryBPane.add(payentryBack);
payentryBPane.add(payentryNext);
termentryBPane.add(termentryBack);
termentryBPane.add(termentryNext);
newInvoic.setFont(head);
invoiceNol.setFont(subheadb);
invoiceNo.setFont(subheadp);
clinfoNext.addActionListener(this);
payentryNext.addActionListener(this);
termentryNext.addActionListener(this);
clinfoBack.addActionListener(this);
payentryBack.addActionListener(this);
termentryBack.addActionListener(this);
// setting Bounds
Bounds(0,0);
// Adding Components
c.add(newInvoic);
c.add(invoiceNol);
c.add(invoiceNo);
c.add(buttonPane);
c.add(panelpane);
// Form properties
cardbutton.show(buttonPane,"clinfoBpane");
cardmain.show(panelpane,"Client_info") ;
c.setLayout(null);
c.setBackground(Color.WHITE);
//clinfoBPane.setBackground(Color.WHITE);
this.setResizable(true);
this.setVisible(true);
setDefaultCloseOperation(3);
System.out.println("");
}
public void Bounds(int i, int j){
if(i == 0){
newInvoic.setBounds(250,0,150,30);
invoiceNol.setBounds(400,30,100,25);
invoiceNo.setBounds(500,30,100,25);
buttonPane.setBounds(0,410,610,50);
panelpane.setBounds(0,50,610,350);
clinfoNext.setBounds(430,5,150,30);
clinfoBack.setBounds(25,5,150,30);
this.setSize(625,505);
this.setLocation(300,150);
}
else if(i == 1){
newInvoic.setBounds(350,0,150,30);
invoiceNol.setBounds(600,30,100,25);
invoiceNo.setBounds(700,30,100,25);
buttonPane.setBounds(0,440,830,50);
panelpane.setBounds(0,50,815,390);
if(j == 0){
payentryNext.setBounds(640,5,150,30);
payentryBack.setBounds(30,5,150,30);
}
else if(j == 1){
termentryNext.setBounds(640,5,150,30);
termentryBack.setBounds(30,5,150,30);
}
this.setSize(830,525);
this.setLocation(200,100);
}
else{
}
}
public void actionPerformed(ActionEvent ae){
if(ae.getSource() == clinfoNext){
cardbutton.show(buttonPane,"payentryBPane");
cardmain.show(panelpane,"invoice_entry") ;
Bounds(1,0);
}
else if(ae.getSource() == clinfoBack){
this.dispose();
Mainfrm mf = new Mainfrm();
mf.setVisible(true);
}
else if((ae.getSource() == payentryNext)){
Bounds(1,1);
cardbutton.show(buttonPane,"termentryBPane");
cardmain.show(panelpane,"term_entry") ;
}
else if(ae.getSource() == payentryBack){
Bounds(0,0);
cardbutton.show(buttonPane,"clinfoBpane");
cardmain.show(panelpane,"Client_info") ;
}
else if(ae.getSource() == termentryBack){
cardbutton.show(buttonPane,"payentryBPane");
cardmain.show(panelpane,"invoice_entry") ;
Bounds(1,0);
}
else if(ae.getSource() == termentryNext){
JOptionPane.showConfirmDialog(this,"Are you sure that the invoice is over","Confirmation", JOptionPane.YES_NO_CANCEL_OPTION, 0);
}
else{
}
}
public static void main(String []avi){
new InvoicePage();
}
}
參見[*驗證輸入*]（HTTP GET解決
：//docs.oracle.com/javase/tutorial/uiswing/misc/focus.html#inputVerification）並編輯你的問題以包含一個[sscce]（http://sscce.org/），它顯示你遇到的任何問題。 – trashgod 2013-02-23 06:15:25
先生我知道如何驗證控件，但我想通過使用卡布局在獨立的類創建的面板解決方案 – 2013-02-23 07:01:50
編輯您的問題，以澄清這一點。這個[示例]（http://stackoverflow.com/a/5655843/230513）添加了_same_類的幾個實例;你可以用它作爲你的[sscce]的基礎（http://sscce.org/）。 – trashgod 2013-02-23 07:06:47