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法律研究如何在 Java 中添加空边框到 JButton？
要向组件添加空边框，请使用 BorderFactory 类的 createEmptyBorder() 方法 −
Border emptyBorder = BorderFactory.createEmptyBorder(10, 10, 0, 0);
要将上述边框设置为组件，请使用 setBorder() 方法 −
JButton button = new JButton("Empty Border");
button.setBorder(emptyBorder);以下是向 JButton 添加空边框的示例 −
示例
package my;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.border.Border;
import javax.swing.border.SoftBevelBorder;
public class SwingDemo {
public static void main(String args[]) {
JFrame frame = new JFrame("Demo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Border raisedBorder = new SoftBevelBorder(SoftBevelBorder.RAISED, Color.GREEN, Color.GREEN.darker(),
Color.MAGENTA, Color.magenta.brighter());
Border raisedBorder2 = new SoftBevelBorder(SoftBevelBorder.RAISED);
Border loweredBorder = new SoftBevelBorder(SoftBevelBorder.LOWERED, Color.ORANGE, Color.YELLOW.darker(),
Color.BLUE, Color.yellow.brighter());
Border emptyBorder = BorderFactory.createEmptyBorder(10, 10, 0, 0);
JButton raisedButton = new JButton("Raised Border");
raisedButton.setBorder(raisedBorder);
JButton loweredButton = new JButton("Lowered Border");
loweredButton.setBorder(loweredBorder);
JLabel raisedLabel = new JLabel("Raised Border");
raisedLabel.setBorder(raisedBorder2);
JButton button = new JButton("Empty Border");
button.setBorder(emptyBorder);
Container contentPane = frame.getContentPane();
contentPane.add(raisedButton,BorderLayout.WEST);
contentPane.add(loweredButton,BorderLayout.EAST);
contentPane.add(raisedLabel,BorderLayout.CENTER);
contentPane.add(button,BorderLayout.NORTH);
frame.setSize(600, 300);
frame.setVisible(true);
}
}输出
更新于： 2019-07-30
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