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我想創建一個對話框,其中包含兩個splitPanel和一個菜單欄。兩個splitPanel都包含jlist。爲什麼我在jmenubar旁邊有一個白色區域?
但是,當我運行我的代碼,我得到白色區域旁邊的菜單欄。在下面的圖片白色區域創建旁邊組織。
這裏是我的部分代碼:
public class HistList extends JPanel {
JTable table = new JTable();
JMenuItem remove = new JMenuItem("Remove");
JScrollPane scrollPane = new JScrollPane();
MyTableModel model = new MyTableModel();
HistList() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
String[] title = {" ", "Time", "Name", "Location"};
Object[][] data = {
{false, "01:22:16", "Google", "http://www.google.com"},
{false, "01:22:16", "Yahoo - login", "https://login.yahoo.com/?.src=ym&.intl=us&.lang=en-US&.done=https%3a//mail.yahoo.com"},
{false, "01:22:29", "Oracle | Integrated Cloud Applications and Platform Services", "https://www.oracle.com/index.html"}
};
for (int i = 0; i < data.length; i++) {
model.addRow(data[i]);
}
this.table = new JTable(model);
this.table.setShowGrid(false);
this.scrollPane = new JScrollPane(this.table);
Dimension size = new Dimension(510, 380);
this.scrollPane.setPreferredSize(size);
this.scrollPane.getViewport().setBackground(Color.WHITE);
JTextField name = new JTextField();
name.setPreferredSize(new Dimension(scrollPane.getWidth(), 25));
JTextField locationText = new JTextField();
locationText.setPreferredSize(new Dimension(scrollPane.getWidth(), 25));
JPanel textPane = new JPanel();
JLabel nameLabel = new JLabel("Name:");
JPanel textPane1 = new JPanel();
textPane1.setLayout(new BoxLayout(textPane1, BoxLayout.X_AXIS));
textPane1.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 0));
textPane1.add(Box.createHorizontalGlue());
textPane1.add(nameLabel);
textPane1.add(Box.createRigidArea(new Dimension(21, 0)));
textPane1.add(name);
JLabel locationLabel = new JLabel("Location:");
JPanel textPane2 = new JPanel();
textPane2.setLayout(new BoxLayout(textPane2, BoxLayout.X_AXIS));
textPane2.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 0));
textPane2.add(Box.createHorizontalGlue());
textPane2.add(locationLabel);
textPane2.add(Box.createRigidArea(new Dimension(5, 0)));
textPane2.add(locationText);
textPane.setLayout(new BoxLayout(textPane, BoxLayout.Y_AXIS));
textPane.setBorder(BorderFactory.createEmptyBorder(0, 2, 2, 2));
textPane.add(Box.createVerticalGlue());
textPane.add(textPane1);
textPane.add(Box.createRigidArea(new Dimension(0, 5)));
textPane.add(textPane2);
JPanel contentPane = new JPanel();
contentPane.setLayout(new BoxLayout(contentPane, BoxLayout.Y_AXIS));
contentPane.add(scrollPane);
contentPane.setBorder(BorderFactory.createEmptyBorder(0, 2, 2, 2));
contentPane.add(Box.createVerticalGlue());
contentPane.add(Box.createRigidArea(new Dimension(0, 5)));
contentPane.add(textPane);
JPanel pane = new JPanel(new BorderLayout());
pane.setBorder(BorderFactory.createEmptyBorder(15, 0, 0, 0));
pane.setBackground(Color.WHITE);
String[] dates = {"12/15/2016", "12/30/2016"};
JList list;
list = new JList(dates);
list.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
JLabel label = new JLabel("Browsing Date");
pane.add(label, BorderLayout.NORTH);
pane.add(list, BorderLayout.WEST);
pane.setPreferredSize(new Dimension(150, 380));
JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, pane, contentPane);
JMenuBar organize = new JMenuBar();
organize.setOpaque(true);
organize.setBackground(getBackground());
JMenu menu = new JMenu("Organize");
menu.add(remove);
remove.setEnabled(false);
menu.setOpaque(true);
menu.setBackground(getBackground());
menu.setIcon(new ImageIcon(Hello.class.getResource("/rsz_todo-512.png")));
organize.add(menu);
JPanel finale = new JPanel(new BorderLayout());
finale.setOpaque(true);
finale.add(organize,BorderLayout.NORTH);
finale.add(splitPane,BorderLayout.CENTER);
setOpaque(true);
add(finale);
}
我無法弄清楚什麼是創造這個白色區域。這部分我很新。任何人都可以請幫我解決它?請原諒我的愚蠢問題。提前致謝。
1)爲了更好地提供幫助,請發佈[MCVE]或[簡短,獨立,正確的示例](http://www.sscce.org/)。 2)'finale.add(組織,BorderLayout.NORTH);'爲什麼不使用'setJMenuBar(..)'? 3)所有的'setBackground(..)'調用是什麼?這應該由PLAF處理。 –
感謝您的建議,我已經發布了我的完整代碼 – IAmBlake
*「完整的代碼」*我從來沒有建議過,並且它不是任何情況下的完整代碼(缺少進口和將屏幕放在屏幕上的主要方法)。當我提供鏈接時,請*閱讀*他們。 –