我正在做一個testJComboBox程序.一旦我選擇了jCombobox的輸出,我就會得到我需要的字符串值.但是,它不起作用.

這是我的代碼：

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

public class TestJCB extends JFrame {

private JLabel genderL;

private JComboBox genderJCB;

private String[] test = {"male", "female"};

private JButton gB;

public TestJCB() {

setSize(400, 400);

setLocationRelativeTo(null);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setLayout(null);

setVisible(true);

JPanel frame = new JPanel();

frame.setSize(400, 400);

frame.setLocation(0, 0);

frame.setLayout(null);

frame.setVisible(true);

JLabel genderL = new JLabel("Gender");

genderL.setBounds(10, 200, 100, 30);

JComboBox genderJCB = new JComboBox(test);

genderJCB.setBounds(60, 10, 100, 30);

JButton gB = new JButton("Gender");

gB.setBounds(10, 50, 60, 30);

aaa a = new aaa();

gB.addActionListener(a);

frame.add(genderL);

frame.add(genderJCB);

frame.add(gB);

add(frame);

}

public class aaa implements ActionListener {

public void actionPerformed(ActionEvent sHandler) {

if (genderJCB.getSelectedItem().equals("female")) {

System.out.print("yes");

} else {

System.out.print("no");

}

}

}

public static void main(String[] args) {

TestJCB test = new TestJCB();

test.setVisible(true);

}

}

我也嘗試過combo.getEditor().getItem()但它沒有用.

總結

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