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Can we read from JOptionPane by requesting input from user in Java?
Yes, we can read from JOptionPane. Here, we will get the result of the showInputDialog() in a String variable −
String input = JOptionPane.showInputDialog("Enter the C++ lessons you covered till now?");After getting the result, we will convert it to integer with parseInt() and display it on Console −
int res = Integer.parseInt(input);
System.out.println("Lessons covered = "+res);The following is an example to read from JOptionPane by requesting input from user −
Example
package my;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.net.URL;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
public class SwingDemo {
public static void main(String[] args) throws Exception {
ImageIcon icon = new ImageIcon(new URL("http −//www.tutorialspoint.com/images/C-PLUS.png"));
JLabel label = new JLabel(icon);
JPanel panel = new JPanel(new GridBagLayout());
panel.add(label);
panel.setOpaque(true);
panel.setBackground(Color.ORANGE);
JPanel textPanel = new JPanel(new GridLayout(10, 5));
for (int i = 0; i < 20; i++) {
textPanel.add(new JLabel("Learn C++"));
}
JPanel panel2 = new JPanel(new BorderLayout());
panel2.add(textPanel);
panel2.add(panel, BorderLayout.EAST);
JOptionPane.showMessageDialog(null, panel2, "Course",JOptionPane.DEFAULT_OPTION);
String input = JOptionPane
.showInputDialog("Enter the C++ lessons you covered till now?");
int res = Integer.parseInt(input);
System.out.println("Lessons covered = "+res);
}
}Output
On clicking OK above, input would be requested from the user as shown below −
Now, on pressing ENTER the lesson numbers added above would get displayed in the Console as shown below −
Updated on 30-Jul-2019 22:30:26
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