小编Pra*_*een的帖子

这是我的启动画面代码,

public class SplashScreen extends JWindow {

private static final long serialVersionUID = 1L;
private BorderLayout borderLayout = new BorderLayout();
private JLabel imageLabel = new JLabel();
private JProgressBar progressBar = new JProgressBar(0, 100);

public SplashScreen(ImageIcon imageIcon) {
    imageLabel.setIcon(imageIcon);
    setLayout(borderLayout);
    add(imageLabel, BorderLayout.CENTER);
    add(progressBar, BorderLayout.SOUTH);
    pack();
    setLocationRelativeTo(null);
}

public void showScreen() {
    SwingUtilities.invokeLater(new Runnable() {
        public void run() {
            setVisible(true);
        }
    });
}

public void close() {
    SwingUtilities.invokeLater(new Runnable() {
        public void run() {
            setVisible(false);
            dispose();
        }
    });
}

public void setProgress(final …

String[] k1 = {"0.10", "0.2", "0.1", "0", "1.10", "1.2", "1.1", "1", "2.10", "2", "2.2", "2.1"};
double[] k2 = {0.10, 0.2, 0.1, 0, 1.10, 1.2, 1.1, 1, 2.10, 2, 2.2, 2.1};
Arrays.sort(k1);
Arrays.sort(k2);
System.out.println(Arrays.toString(k1));
System.out.println(Arrays.toString(k2));

输出:

[0,   0.1, 0.10, 0.2,  1,   1.1, 1.10, 1.2,  2,   2.1, 2.10, 2.2]
[0.0, 0.1, 0.1,  0.2,  1.0, 1.1, 1.1,  1.2,  2.0, 2.1, 2.1,  2.2]

我想拥有什么,

[0, 0.1, 0.2, 0.10, 1, 1.1, 1.2, 1.10, 2, 2.1, 2.2, 2.10]

首先在小数之前和之后排序.像1,1.1,1.2,1.10,2,2.1等.

我怎么能为此写一个比较器？

例:

public class JFrameTest {
  public static void main(String[] args) {
    SwingUtilities.invokeLater(new Runnable() {
        @Override
        public void run() {
            JFrame frame = new JFrame();
            JButton button = new JButton("Hello!");
            frame.getContentPane().add(button);
            frame.getContentPane().add(button);
            frame.pack();
            frame.setVisible(true);
            frame.setLocationRelativeTo(null);
        }
    });
  }
}

在上面的示例中,即使没有错误,"按钮"对象也只添加一次.我问这个的原因是,我想在JFrame和JDialog上添加一个相同的JPanel对象(在某些表上双击以进行编辑/删除功能).我能够通过拥有两个JPanel对象来解决它,但只是想知道为什么它不可能.