[swing]定制边框?

Question

我想定制JLabel的边框，让其显示为菱形<>，请问如何实现？

Answer 1

jLabel1.setBorder(BorderFactory.createLineBorder(Color.red));
 label.setBorder(BorderFactory.createLineBorder(Color.****));   

Answer 2

> jLabel1.setBorder(BorderFactory.createLineBorder(Color.red));
> label.setBorder(BorderFactory.createLineBorder(Color.****));
我的要求可没这么简单。

Answer 3

估计要自己在label上手绘了……

Answer 4

package test;import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Graphics;import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;public class TestJLable extends JFrame {
private static final long serialVersionUID = 1L; public static void main(String[] args) {
new TestJLable();
} public TestJLable() {
init();
} private void init() {
this.getContentPane().setLayout(new BorderLayout());
this.getContentPane().add(getCenterPanel(), BorderLayout.CENTER);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.pack();
this.setVisible(true);
} private JPanel getCenterPanel() {
JPanel panel = new JPanel();
JLabel lable = new MyLabel("Test");
panel.setLayout(new BorderLayout());
lable.setPreferredSize(new Dimension(100, 100));
panel.add(lable, BorderLayout.CENTER);
return panel;
} class MyLabel extends JLabel {
private static final long serialVersionUID = 1L; public MyLabel(String text) {
super(text);
} @Override
public void paint(Graphics g) {
super.paint(g);
g.drawLine(this.getX(), this.getY() + this.getHeight() / 2, this.getX() + this.getWidth() / 2, this.getY());
g.drawLine(this.getX() + this.getWidth() / 2, this.getY(), this.getX() + this.getWidth(), this.getY() + this.getHeight() / 2);
g.drawLine(this.getX(), this.getY() + this.getHeight() / 2, this.getX() + this.getWidth() / 2, this.getY() + this.getHeight());
g.drawLine(this.getX() + this.getWidth() / 2, this.getY() + this.getHeight(), this.getX() + this.getWidth(), this.getY() + this.getHeight() / 2);
}
}
}

Answer 5

我也进行了手工绘制，不过应该重写paintComponent方法吧。
但自己绘制的线不太好看。