我有一个带有三个 JComboBox 的 JPanel。这是我写的代码：
public class Main {
private static String pat_order;
private static String PS_selection;
private static String ovlp_selection;
public static void main(String args[]) throws FileNotFoundException, IOException {
Date start_time = new Date();
try {
GridBagConstraints gbc = new GridBagConstraints();
final JComboBox jc = new JComboBox();
jc.addItem("ARR");
jc.addItem("SRR");
final JComboBox jc1 = new JComboBox();
jc1.addItem("RR");
jc1.addItem("IQC");
final JComboBox jc2 = new JComboBox();
jc2.addItem("YES");
jc2.addItem("NO");
JPanel myPanel = new JPanel(new GridBagLayout());
myPanel.add(jc, gbc);
myPanel.add(jc1, gbc);
myPanel.add(jc2, gbc);
jc.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent ie) {
String order = (String) jc.getSelectedItem();
pat_order = order;
}
});
jc1.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent ie) {
String PS_method = (String) jc1.getSelectedItem();
PS_selection = PS_method;
}
});
jc2.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent ie) {
String ovlp_user = (String) jc2.getSelectedItem();
ovlp_selection = ovlp_user;
}
});
if (pat_order == "ARR") {
Arrays.sort(patterns_array, new ColumnComparator(0));
} else if (pat_order == "SRR") {
Arrays.sort(patterns_array, new ColumnComparator(1));
}
if (PS_selection == "RR") {
System.out.println("RR");
} else if (PS_selection == "IQC") {
System.out.println("IQC");
}
if (ovlp_selection == "YES") {
Overlap a = new Overlap(Xdisc, final_patterns, k, Yresid, Xresid, projectname, pat_order, PS_selection);
}
} catch (Exception e) {
System.err.println("Error: " + e.getMessage());
} finally {
}
}
}
问题是第一个 JComboBox 工作正常，但第二个和第三个什么也没做。如果您能帮助我解决这个问题，那就太好了。