0
大家好我的研究任務，我需要讓我的GUI程序轉換成一個小程序，但我似乎無法使其工作，我的繼承人的工作：GUI進行到小程序
公共類BookCentre擴展JFrame中實現的ActionListener {
private CardLayout cardManager;
private JPanel deck;
private JButton controls[];
private String names[] = { "Input", "Processing", "Display"};
public BookCentre(){
super("CardLayout");
Container container = getContentPane();
deck = new JPanel();
cardManager = new CardLayout();
deck.setLayout(cardManager);
deck.add(card1Panel(), "c1");
deck.add(card2Panel(), "c2");
deck.add(card3Panel(), "c3");
JPanel buttons = new JPanel();
buttons.setLayout(new GridLayout(3, 1));
controls = new JButton[ names.length ];
for (int count = 0; count < controls.length; count++) {
controls[ count ] = new JButton(names[ count ]);
controls[ count ].addActionListener(this);
buttons.add(controls[ count ]);
container.add(buttons, BorderLayout.WEST);
container.add(deck, BorderLayout.CENTER);
setSize(700, 500);
setVisible(true);}
}
public JPanel card1Panel(){
JPanel card1 = new JPanel();
card1.setLayout(null);
Insets insets = card1.getInsets();
card1.setSize(600, 300);
JLabel label1 = new JLabel("Enter Customer Information");
Dimension size1 = label1.getPreferredSize();
label1.setBounds(230, 5, size1.width, size1.height);
JLabel label1a = new JLabel("Customer Name:");
Dimension size1a = label1a.getPreferredSize();
label1a.setBounds(1, 65, size1a.width, size1a.height);
JTextField userinput = new JTextField("");
Dimension size1b = label1a.getPreferredSize();
userinput.setBounds(265, 65, size1b.width, size1b.height);
String text = userinput.getText();
JLabel label1b = new JLabel("Choose exactly three books: use CTRL Or SHIFT");
Dimension size1c = label1b.getPreferredSize();
label1b.setBounds(1, 110, size1c.width, size1c.height);
String[] selection = {"Deitel-Java How to Program", "Horstmann-Big Java", "Lewis-Software Solutions", "Staugaard-Java for IS", "Sun-Core Java", "Hamilton-JDBC", "Jackson-Java By Example", "Riley-The Object of Java", "Geary-Graphic Java", "Santry-Advanced Java2", "Bishop-Java Gently", "Wigglesworth-Advanced Java", "Liang-Intro to Java", "Lambert-Java"};
JList books = new JList(selection);
books.setVisibleRowCount(5);
books.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
Dimension size1d = books.getPreferredSize();
books.setBounds(230, 150, size1d.width, size1d.height);
add(new JScrollPane (books));
JButton submit = new JButton("Submit");
Dimension size1e = submit.getPreferredSize();
submit.setBounds(100, 425, 400, size1e.height);
card1.add(submit);
card1.add(books);
card1.add(userinput);
card1.add(label1);
card1.add(label1a);
card1.add(label1b);
return card1;
}
public JPanel card2Panel(){
JLabel label2 = new JLabel("Processing", SwingConstants.CENTER);
JPanel card2 = new JPanel();
card2.add(label2);
return card2;
}
public JPanel card3Panel(){
JLabel label3 = new JLabel("card three");
JPanel card3 = new JPanel();
card3.setLayout(new BorderLayout());
card3.add(new JButton("North"), BorderLayout.NORTH);
card3.add(new JButton("West"), BorderLayout.WEST);
card3.add(new JButton("East"), BorderLayout.EAST);
card3.add(new JButton("South"), BorderLayout.SOUTH);
card3.add(label3, BorderLayout.CENTER);
return card3;
}
public void actionPerformed(ActionEvent event) {
if (event.getSource() == controls[ 0 ])
cardManager.first(deck);
else if (event.getSource() == controls[ 1 ])
cardManager.show(deck, "c2");
else if (event.getSource() == controls[ 2 ])
cardManager.last(deck);
}
public static void main(String args[]) {
BookCentre cardDeckDemo = new BookCentre();
cardDeckDemo.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
} }
爲線：
public class BookCentre extends JFrame implements ActionListener {
我試圖與「小程序」代替「的JFrame」，但我開始在我的代碼讓許多錯誤。
請注意縮進代碼（使用邏輯和一致的方法）。我發現那個爛攤子是不可讀的。至於GUI，更好的選擇可能不是做任何轉換，而是啓動工作（可能是基於JFrame的）應用程序。從一個鏈接使用[Java Web Start]（http://stackoverflow.com/tags/java-web-start/info）。 –
*「我嘗試用」Applet「替換」JFrame「，但是我開始在我的代碼中出現大量錯誤。」* 1）您確實意識到Swing提供了一個'JApplet'，對吧？ 2）當你不復制/粘貼到帖子中時，你如何期望任何人解決**'錯誤'中的任何錯誤？ –