它在這里與對象一起工作得很好.

import java.awt.*;

import javax.swing.*;

class TestCombo {

public static void main(String[] args) {

SwingUtilities.invokeLater(new Runnable() {

public void run() {

Integer[] numbers = {1,2,3};

String[] names = {"Ben", "Jill", "Peter"};

JComboBox numberCombo = new JComboBox(numbers);

JComboBox nameCombo = new JComboBox(names);

JPanel p = new JPanel(new GridLayout(0,1,3,3));

p.add(numberCombo);

p.add(nameCombo);

JOptionPane.showMessageDialog(null, p);

Integer chosenNumber = (Integer)numberCombo.getSelectedItem();

System.out.println("Chosen Number: " + chosenNumber);

String chosenName = (String)nameCombo.getSelectedItem();

System.out.println("Chosen Name: " + chosenName);

}

});

}

}

典型輸出：

Chosen Number: 2

Chosen Name: Peter

Press any key to continue . . .

我同意LBFF的評論.你需要回到基礎.

總結

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