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숙제로이 프로그램을 만들었으므로 하나의 GUI 선택 항목을 다른 것에 추가해야합니다.GUI 프로그램을 만들었지 만 이상한 오류가 발생했습니다.
2 가지 선택 사항의 합계가 학기당 총 비용 버튼에 표시되지 않습니다. 액션 리스너에서
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
/**
The Main class creates the GUI for the Dorm and
Meal charges.
*/
public class Main extends JFrame
{
private JPanel dormPanel;
private JComboBox dormBox;
private JPanel mealPanel;
private JComboBox mealBox;
private JPanel totalChargesPanel;
private JPanel selectedMealPanel;
private JPanel buttonPanel;
private JButton calcButton;
private JLabel label1;
private JTextField totalCharges;
private String[] dorm = { "Allen Hall: $1,500 per semester",
"Pike Hall: $1,600 per semester",
"Farthing Hall: $1,200 per semester",
"University Suites: $1,800 pe r semester"};
private String[] meal = { "7 meals per week: $650 per semester",
"14 meals per week: $1,095 per semester",
"Unlimited meals: $1,500 per semester"};
/**
Constructor
*/
public Main()
{
super("Dormitory and Meal Plan");
// Specify an action for the close button.
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Create a BorderLayout manager.
setLayout(new BorderLayout());
// Create the dorm and meal panel.
buildDormPanel();
buildMealPanel();
buildSelectedTotalChargesPanel();
buildButtonPanel();
// Add the components to the content pane.
add(dormPanel, BorderLayout.WEST);
add(mealPanel, BorderLayout.EAST);
add(totalChargesPanel, BorderLayout.SOUTH);
add(buttonPanel, BorderLayout.NORTH);
// Pack the contents of the window and display it.
pack();
setVisible(true);
}
// The buildDormPanel method builds the dorm panel.
private void buildDormPanel()
{
// Create the dorm panel.
dormPanel = new JPanel();
dormBox = new JComboBox(dorm);
// Register the action listener.
dormBox.addActionListener(new ComboBoxListener());
// Add the dorm panel to the panel.
dormPanel.add(dormBox);
}
// The buildMealPanel method builds the meal panel.
private void buildMealPanel()
{
// Create the meal panel.
mealPanel = new JPanel();
mealBox = new JComboBox(meal);
// Register the action listener.
mealBox.addActionListener(new ComboBoxListener());
// Add the meal panel to the panel.
mealPanel.add(mealBox);
}
// The buttonPanel method builds the bottun panel.
private void buildButtonPanel()
{
// Create a panel.
buttonPanel = new JPanel();
// Create a button.
calcButton = new JButton("Calculate");
// Register an action listener with the button.
calcButton.addActionListener(new ButtonListener());
// Add the button to the panel.
buttonPanel.add(calcButton);
}
// The buildSelectedDormPanel builds the selected totalCharges panel.
private void buildSelectedTotalChargesPanel()
{
// Create the totalChargesPanel for the label.
totalChargesPanel = new JPanel();
label1 = new JLabel("Total charges per semester: ");
// Create the totalCharges textfield.
totalCharges = new JTextField (25);
totalCharges.setEditable(false);
// Add the totalChargesPanel to the panel.
totalChargesPanel.add(label1);
totalChargesPanel.add(totalCharges);
}
/** Private inner class that handles the event when the user
selects the dorm and meal boxes.
*/
private class ComboBoxListener implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
// Variables to hold the dorm, meal, and total charges.
String dorm = (String) dormBox.getSelectedItem();
String meal = (String) mealBox.getSelectedItem();
// Calculates the total.
totalCharges.setText(meal + dorm);
}
}
private class ButtonListener implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
// Add code below
}
}
public static void main(String[] args)
{
new Main();
}
}
콤보 상자에서 아무것도 선택하지 않습니까? –
'$ DEITY'를 좋아하기 때문에, 특히 프로그램 전체를 질문에 덤프하려고한다면, [코드를 읽을 수 있도록 포맷하십시오] (http://stackoverflow.com/editing-help)하시기 바랍니다. –
'하나의 GUI가 다른 것을 선택합니다'는 의미는 무엇입니까? – Falmarri