更改默认字体的JLabel

Question

我怎么会去设置默认字体为所有JLabel实例。而不是独立地设定各JLabel的字体。

Answer 1

使用 UIManager 定义JLabel的默认字体：

import java.awt.FlowLayout;
import java.awt.Font;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.UIManager;

public class LabelFont {

   public static void main(String[] args) {
      Font oldLabelFont = UIManager.getFont("Label.font");
      UIManager.put("Label.font", oldLabelFont.deriveFont(Font.PLAIN));

      JFrame f = new JFrame("LabelFont Test");
      f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      f.getContentPane().setLayout(new FlowLayout());

      JLabel df = new JLabel("Default JLabel font");
      f.getContentPane().add(df);

      JLabel ef = new JLabel("Font explicitly set");
      ef.setFont(oldLabelFont);
      f.getContentPane().add(ef);

      f.pack();
      f.setVisible(true);
   }
}

经： HTTP：// coding.derkeiler.com/Archive/Java/comp.lang.java.help/2005-04/msg00395.html

Answer 2

这是你在寻找什么？

import java.awt.FlowLayout;
import java.awt.Font;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.UIManager;

public class LabelFont {

   public static void main(String[] args) {
      Font oldLabelFont = UIManager.getFont("Label.font");
      UIManager.put("Label.font", oldLabelFont.deriveFont(Font.PLAIN));

      JFrame f = new JFrame("LabelFont Test");
      f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      f.getContentPane().setLayout(new FlowLayout());

      JLabel df = new JLabel("Default JLabel font");
      f.getContentPane().add(df);

      JLabel ef = new JLabel("Font explicitly set");
      ef.setFont(oldLabelFont);
      f.getContentPane().add(ef);

      f.pack();
      f.setVisible(true);
   }
}