Java 2 Standard Edition zamonaviy dasturlash tili

JOptionPane klassi yordamida yaratilgan tasdiqlash dialog oynasi

Ma’lumot kiritish dialog oynasi JOptionPane klassining showInputDialog() metodi yordamida yaratiladi. showInputDialog() metodi foydalanuvchi kiritgan matnini qaytaradi. Quyidagi dastur ma’lumot kiritish dialog oynasini chiqarib, matnLabel yozuvini kiritilgan matn asosida o’zgartirib beradi.

import javax.swing.*; public class DialogTest3 {

public static void main(String[] args)

{

JFrame frame = new JFrame("Dialog Test 3");

JLabel label = new JLabel("Kiritilgan matn: ");

JLabel matnLabel = new JLabel(" "); panel.add(label); panel.add(matnLabel); frame.getContentPane() .add(panel) ;

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(300, 200); frame.setVisible(true);

String s = JOptionPane.showInputDialog(frame, "Fayl nomini kiriting"); matnLabel.setText(s);

}

}

Dastur quyidagi ma’lumot kiritish dialogini chiqarib beardi:

JOptionPane klassi yordamida yaratilgan ma’lumot kiritish dialog oynasi

Maxsus dialog oynasi JOptionPane klassining showOptionDialog () metodi yordamida yaratiladi. Ushbu dialog oynasiga istalgan elementlarni joylashtirib olish mumkin. Quyidagi dastur avtorizatsia dialog oynasini yaratib beradi.

import javax.swing.*; public class DialogTest4 {

public static void main(String[] args)

{

JFrame frame = new JFrame("Dialog Test 4");

JPanel panel = new JPanel();

JLabel matnLabel = new JLabel(" ");

panel.add(matnLabel);

frame.getContentPane().add(panel);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.setVisible(true);

JTextField userField = new JTextField();

JPasswordField passField = new JPasswordField();

String message = "Foydalanuvchi nomi va parolini kiriting";

JOptionPane.showOptionDialog(frame, new Object[] {message, userField, passField}, "Login", JOptionPane.OK_CANCEL_OPTION, JOptionPane.QUESTION_MESSAGE, null, null, null);

String password = "";

for(char ch: passField.getPassword())
password = password + ch;

matnLabel.setText("Foydalanuvchi: " + userField.getText() + "; Parol: " +

password);

}

}

Dastur quyidagi dialog oynani chiqarib beradi: