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static String room;
static int num;
static int addr;

/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Select frame = new Select();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}

public static void set(){
jframe.setVisible(true);
jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jframe.setBounds(100, 100, 500, 200);
jframe.setBounds(100, 100, 450, 100);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
jframe.setContentPane(contentPane);
contentPane.setLayout(new FlowLayout(FlowLayout.CENTER, 5, 5));
/*
textField = new JTextField();
contentPane.add(textField);
textField.setColumns(10);
*/

JComboBox comboBox = new JComboBox();
contentPane.add(comboBox);
comboBox.addItem("");
comboBox.addItem(301);
comboBox.addItem(302);
comboBox.addItem(201);
comboBox.addItem(202);
comboBox.addItem(101);
comboBox.addItem(102);
comboBox.addItemListener(new ItemListener() {

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