java 更改默认 JLabel 字体

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时间:2020-10-29 18:45:00  来源:igfitidea点击:

Changing default JLabel font

javauser-interfaceswingjlabel

提问by miku

How would I go about setting the default font for all JLabelinstances. Instead of setting the font for each JLabelindependently.

我将如何为所有JLabel实例设置默认字体。而不是为每个JLabel独立设置字体。

回答by miku

Use UIManagerto define JLabel's default font:

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);
   }
}

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

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

回答by Eran Medan

Is this what you are looking for?

这是你想要的?

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);
   }
}