如何在 Java 中创建带有"是否"和"取消"按钮的对话框?

java 8object oriented programmingprogramming

对于带有"是否"和"取消"按钮的对话框，您需要使用 JOptionPane.showConfirmDialog()，您将在其中获得一个确认对话框。

以下是在 Java 中创建带有"是否"和"取消"按钮的对话框的示例 −

示例

package my;
import java.awt.Dimension;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.SwingConstants;
import javax.swing.UIManager;
public class SwingDemo {
   public static void main(String[] args) {
      ImageIcon icon = new ImageIcon("E −\
ew.PNG");
      JPanel panel = new JPanel();
      panel.setSize(new Dimension(250, 100));
      panel.setLayout(null);
      JLabel label1 = new JLabel("The file may contain virus.");
      label1.setVerticalAlignment(SwingConstants.BOTTOM);
      label1.setBounds(20, 20, 200, 30);
      label1.setHorizontalAlignment(SwingConstants.CENTER);
      panel.add(label1);
      JLabel label2 = new JLabel("Do you still want to save it?");
      label2.setVerticalAlignment(SwingConstants.TOP);
      label2.setHorizontalAlignment(SwingConstants.CENTER);
      label2.setBounds(20, 80, 200, 20);
      panel.add(label2);
      UIManager.put("OptionPane.minimumSize", new Dimension(400, 200));
      int res = JOptionPane.showConfirmDialog(null, panel, "File",
      JOptionPane.YES_NO_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE, icon);
      if(res == 0) {
         System.out.println("Pressed YES");
      }
      else if (res == 1){
         System.out.println("Pressed NO");
      } else {
         System.out.println("Pressed CANCEL");
      }
   }
}