Java如何创建复合边框？
在此示例中，我们创建一个复合边框，即围绕边框的边框。在这里，我们没有Border直接创建类的新实例，而是使用BorderFactory工厂类创建边框。
package org.nhooo.example.swing;
import javax.swing.*;
import javax.swing.border.BevelBorder;
import javax.swing.border.Border;
import java.awt.*;
public class CompoundBorderExample extends JFrame {
public CompoundBorderExample() {
initializeUI();
}
private void initializeUI() {
setSize(300, 300);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
setLayout(new FlowLayout(FlowLayout.LEFT));
BevelBorder raisedBevel = (BevelBorder) BorderFactory.createBevelBorder(BevelBorder.RAISED);
BevelBorder loweredBevel = (BevelBorder) BorderFactory.createBevelBorder(BevelBorder.LOWERED);
Border border = BorderFactory.createCompoundBorder(raisedBevel, loweredBevel);
JPanel panel = new JPanel();
panel.setBorder(border);
setContentPane(panel);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new CompoundBorderExample().setVisible(true);
}
});
}
}