java 的jcombobox的取值

发布网友发布时间：2022-07-14 21:02

共3个回答

热心网友时间：2023-10-06 06:54

import javax.swing.JComboBox;
import javax.swing.JFrame;

public class Test2 extends JFrame implements Runnable {

private JComboBox box;

public Test2() {
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

box = new JComboBox();
box.addItem("葡萄");
box.addItem("香蕉");
box.addItem("苹果");

this.add(box);
this.pack();
}

public static void main(String[] args) {
Test2 test = new Test2();
test.setVisible(true);
Thread t = new Thread(test);
t.start();
}

@Override
public void run() {
// TODO Auto-generated method stub
while (true) {
String value = (String) box.getSelectedItem();
System.out.println(value);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

}

热心网友时间：2023-10-06 06:54

(String)fruitCombo.getSelectedItem().equals("Grape")

热心网友时间：2023-10-06 06:55

String ret=jcombobox.getSelectedItem().toString();