JButton更改默认边框

Question

我正在使用SystemLookAndFeel，这会使默认的按钮周围有边框。

现在我想要一个细黑色的边框，但是当我设置边框时，它只是在默认边框周围添加我的新边框，所以我有两个边框。

如何在不移除LookAndFeel的情况下更改或删除边框？

另外：我正在使用Java 7和Win 8.1。

- Kitsundere-chi

---

你可能需要调整LAF。 - Thomas

那么uimanager.put()方法会完成这项任务吗？ - Kitsundere-chi

@MadProgrammer 那不是会移除所有边框吗？ - Kitsundere-chi

真的很有趣，如果我在MacOS上只使用setBorder，它就能工作，移除外观并绘制边框:P - MadProgrammer

也许尝试使用JButton#setContentAreaFilled。 - MadProgrammer

Answer 1

在Windows 10上使用Java 8，我进行了这个小测试

正如你所看到的，我唯一能够使之工作的方法是使用setContentAreaFilled

一般的问题是，许多外观不使用border属性，而是独立地绘制自己的边框（因此需要使用setBorderPainted），但Windows 10的外观似乎想要与众不同。

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);
        }

    }

}

- MadProgrammer

---

那个使用setContentArea(false)的部分工作得很好，谢谢！我正在使用Java 7和Windows 8.1，但它仍然可以工作。问题是我没有正确地使用setContentAreaFalse：我将其设置为false，然后设置边框，然后将其设置回true，这有点愚蠢...接受了你的答案，再次感谢;) - Kitsundere-chi

Answer 2

尝试这个程序，它包含了您可以在JButton中使用的各种边框。

    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：

- Raza Ali Poonja

---

不好意思，就像我在上面的评论中所说的那样，它只会移除我的边框并保留默认值。 - Kitsundere-chi

是的，这通常可以正常工作，但当您使用(system)LAF时，它还会额外使用默认边框。 - Kitsundere-chi