我正在使用 SystemLookAndFeel，它会在我的按钮周围设置默认边框。
现在我想要一个黑色边框，但是当我设置边框时，它只会在默认边框周围添加我的新边框，所以我有两个。
如何在不移除 LookAndFeel 的情况下更改或移除边框？
另外：我使用的是 java 7 和 Win 8.1
【问题讨论】：
JButton#setBorderPainted
setBorder应用的边框将继续绘制
标签： java swing border jbutton look-and-feel
在 Windows 10 上使用 Java 8，我做了这个小测试
如您所见，我可以开始工作的唯一方法是使用setContentAreaFilled
一般的问题是，许多外观不使用border 属性，而是独立绘制自己的边框（这就是setBorderPainted 的原因），但Windows 10 的外观只是想要与众不同
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.LineBorder;
public class ButtonTest {
public static void main(String[] args) {
new ButtonTest();
}
public ButtonTest() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = GridBagConstraints.REMAINDER;
gbc.fill = GridBagConstraints.HORIZONTAL;
JButton btn = new JButton("Normal");
add(btn, gbc);
btn = new JButton("With border");
btn.setBorder(new LineBorder(Color.BLACK));
add(btn, gbc);
btn = new JButton("borderPainted false");
btn.setBorderPainted(false);
btn.setBorder(new LineBorder(Color.BLACK));
add(btn, gbc);
btn = new JButton("contentArea false");
btn.setContentAreaFilled(false);
btn.setBorder(new LineBorder(Color.BLACK));
add(btn, gbc);
btn = new JButton("focusPained false");
btn.setContentAreaFilled(false);
btn.setFocusPainted(false);
btn.setBorder(new LineBorder(Color.BLACK));
add(btn, gbc);
}
@Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
}
}
【讨论】：
试试这个程序，它有你可以在 Jbutton 中拥有的所有类型的边框
import javax.swing.*;
import java.awt.*;
public class jbuttonBoders extends JFrame {
private JButton button[];
private JPanel panel;
public jbuttonBoders() {
super("JButton Border");
setSize(220,190);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
button = new JButton[12];
panel = new JPanel();
panel.setLayout(new FlowLayout(FlowLayout.CENTER));
//Constructing all 12 JButtons using "for loop"
for(int count=0; count<button.length; count++) {
button[count] = new JButton("Button "+(count+1));
panel.add(button[count]);
}
//Setting Different Borders on each JButton
button[0].setBorder(BorderFactory.createLineBorder(Color.blue)); // Simple Line Border
button[1].setBorder(BorderFactory.createLineBorder(Color.red, 5)); // Line Border + Thickness of the Border
button[2].setBorder(BorderFactory.createBevelBorder(1)); // Inner Bevel Border
button[3].setBorder(BorderFactory.createBevelBorder(0)); // Outer Bevel Border
button[4].setBorder(BorderFactory.createBevelBorder(1, Color.red, Color.blue)); // Two Colors Inner Bevel
button[5].setBorder(BorderFactory.createBevelBorder(0, Color.green, Color.orange)); // Two Colors Outer Bevel
button[6].setBorder(BorderFactory.createBevelBorder(1, Color.green, Color.orange, Color.red, Color.blue)); //Four Colors Inner Bevel
button[7].setBorder(BorderFactory.createBevelBorder(0, Color.green, Color.orange, Color.red, Color.blue)); //Four Colors Outer Bevel
button[8].setBorder(BorderFactory.createEmptyBorder(5,10,5,50)); // Empty Border (Upper Space, Left Space, Bottom Space, Right Space)
button[9].setBorder(BorderFactory.createEtchedBorder(0)); //Raised Border Line
button[10].setBorder(BorderFactory.createEtchedBorder(1)); //
button[11].setBorder(BorderFactory.createTitledBorder("My Titled Border")); // Titled Border
/** The Borders shown above are the basic borders that we commonly used.
* There are still lots of Border Styles available so all you have to do is to discover
* and have some experiment using all the available borders. I recommend you use JCreator Pro
* if want to know more about different border styles and learn how to implement them.
*/
//Setting up the container ready for the components to be added.
Container pane = getContentPane();
setContentPane(pane);
//Adding the JPanel to the container
pane.add(panel);
/**Set all the Components Visible.
* If it is set to "false", the components in the container will not be visible.
*/
setVisible(true);
}
//Main Method
public static void main (String[] args) {
jbuttonBoders jbb = new jbuttonBoders();
}
}
Important Part of the Program:
//Setting Different Borders on each JButton
button[0].setBorder(BorderFactory.createLineBorder(Color.blue)); // Simple Line Border
button[1].setBorder(BorderFactory.createLineBorder(Color.red, 5)); // Line Border + Thickness of the Border
button[2].setBorder(BorderFactory.createBevelBorder(1)); // Inner Bevel Border
button[3].setBorder(BorderFactory.createBevelBorder(0)); // Outer Bevel Border
button[4].setBorder(BorderFactory.createBevelBorder(1, Color.red, Color.blue)); // Two Colors Inner Bevel
button[5].setBorder(BorderFactory.createBevelBorder(0, Color.green, Color.orange)); // Two Colors Outer Bevel
button[6].setBorder(BorderFactory.createBevelBorder(1, Color.green, Color.orange, Color.red, Color.blue)); //Four Colors Inner Bevel
button[7].setBorder(BorderFactory.createBevelBorder(0, Color.green, Color.orange, Color.red, Color.blue)); //Four Colors Outer Bevel
button[8].setBorder(BorderFactory.createEmptyBorder(5,10,5,50)); // Empty Border (Upper Space, Left Space, Bottom Space, Right Space)
button[9].setBorder(BorderFactory.createEtchedBorder(0)); //Raised Border Line
button[10].setBorder(BorderFactory.createEtchedBorder(1)); //
button[11].setBorder(BorderFactory.createTitledBorder("My Titled Border")); // Titled Border
输出：
【讨论】：