如何在 Java 中為元件建立一個複合邊框?


複合邊框由兩個或兩個以上邊框組成,即邊框周圍的邊框。我們可以使用 createCompoundBorder() 方法在 Java 中為其建立邊框。

假設以下是我們元件 −

JLabel label;
label = new JLabel("This has compound border (border around a border)!");

現在,設定複合邊框 −

label.setBorder(BorderFactory.createCompoundBorder(BorderFactory
   .createRaisedBevelBorder(), BorderFactory.createLoweredBevelBorder()));

以下是為元件建立複合邊框的示例 −

示例

package my;
import javax.swing.BorderFactory;
import java.awt.Font;
import javax.swing.JFrame;
import javax.swing.JLabel;
public class SwingDemo {
   public static void main(String[] args) throws Exception {
      JFrame frame = new JFrame("Demo");
      JLabel label;
      label = new JLabel("This has compound border (border around a border)!");
      label.setFont(new Font("Arial", Font.BOLD, 18));
      label.setVerticalAlignment(JLabel.CENTER);
      label.setBorder(BorderFactory.createCompoundBorder(BorderFactory
      .createRaisedBevelBorder(), BorderFactory.createLoweredBevelBorder()));
      frame.add(label); frame.setSize(550,350); frame.setVisible(true);
   }
}

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更新於: 30-7-2019

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