在运行时更改字体

请问是否有另一种方法如何在运行时改变字体作为使用FontUIResource，整个AWT / Swing GUI，没有任何知识/兴趣，如果有本地variables和types的JComponents

import java.awt.*; import java.awt.event.*; import java.util.Locale; import java.util.logging.Level; import java.util.logging.Logger; import javax.swing.*; import javax.swing.plaf.FontUIResource; import javax.swing.plaf.basic.BasicComboBoxRenderer; public class SystemFontDisplayer extends JFrame { private static final long serialVersionUID = 1L; private JFrame frame = new JFrame("Nimbus UIDeafaults and Font"); private JComboBox fontsBox; private javax.swing.Timer timer = null; private JButton testButton = new JButton("testButton"); private JTextField testTextField = new JTextField("testTextField"); private JLabel testLabel = new JLabel("testLabel"); public SystemFontDisplayer() { GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment(); String[] fontFamilyNames = ge.getAvailableFontFamilyNames(Locale.getDefault()); fontsBox = new JComboBox(fontFamilyNames); fontsBox.setSelectedItem(0); fontsBox.setRenderer(new ComboRenderer()); fontsBox.addItemListener(new ItemListener() { @Override public void itemStateChanged(ItemEvent e) { if (e.getStateChange() == ItemEvent.SELECTED) { final String fontName = fontsBox.getSelectedItem().toString(); fontsBox.setFont(new Font(fontName, Font.PLAIN, 16)); start(); } } }); fontsBox.setSelectedItem(0); fontsBox.getEditor().selectAll(); frame.setLayout(new GridLayout(4, 0, 20, 20)); frame.add(fontsBox); frame.add(testButton); frame.add(testTextField); frame.add(testLabel); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLocation(200, 105); frame.pack(); java.awt.EventQueue.invokeLater(new Runnable() { @Override public void run() { fontsBox.setPopupVisible(true); fontsBox.setPopupVisible(false); } }); frame.setVisible(true); } private void start() { timer = new javax.swing.Timer(750, updateCol()); timer.setRepeats(false); timer.start(); } public Action updateCol() { return new AbstractAction("text load action") { private static final long serialVersionUID = 1L; @Override public void actionPerformed(ActionEvent e) { final Font fnt = new Font(fontsBox.getSelectedItem().toString(), Font.PLAIN, 12); /*try { LookAndFeel lnf = UIManager.getLookAndFeel().getClass().newInstance(); final FontUIResource res = new FontUIResource(fnt); UIDefaults uiDefaults = lnf.getDefaults(); uiDefaults.put("Button.font", res); uiDefaults.put("TextField.font", res); uiDefaults.put("Label.font", res); UIManager.getLookAndFeel().uninitialize(); UIManager.setLookAndFeel(lnf); } catch (InstantiationException ex) { Logger.getLogger(SystemFontDisplayer.class.getName()).log(Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { Logger.getLogger(SystemFontDisplayer.class.getName()).log(Level.SEVERE, null, ex); } catch (UnsupportedLookAndFeelException ex) { Logger.getLogger(SystemFontDisplayer.class.getName()).log(Level.SEVERE, null, ex); } UIDefaults defaults = UIManager.getDefaults(); final FontUIResource res = new FontUIResource(fnt); defaults.put("Button.font", res); defaults.put("TextField.font", res); defaults.put("Label.font", res); SwingUtilities.updateComponentTreeUI(frame);*/ final FontUIResource res = new FontUIResource(fnt); UIManager.getLookAndFeelDefaults().put("Button.font", res); UIManager.getLookAndFeelDefaults().put("TextField.font", res); UIManager.getLookAndFeelDefaults().put("Label.font", res); SwingUtilities.updateComponentTreeUI(frame); } }; } public static void main(String arg[]) { /*try { for (UIManager.LookAndFeelInfo laf : UIManager.getInstalledLookAndFeels()) { if ("Nimbus".equals(laf.getName())) { UIManager.setLookAndFeel(laf.getClassName()); } } } catch (Exception e) { e.printStackTrace(); }*/ java.awt.EventQueue.invokeLater(new Runnable() { @Override public void run() { SystemFontDisplayer systemFontDisplayer = new SystemFontDisplayer(); } }); } private class ComboRenderer extends BasicComboBoxRenderer { private static final long serialVersionUID = 1L; @Override public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) { super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus); final Object fntObj = value; final String fontFamilyName = (String) fntObj; setFont(new Font(fontFamilyName, Font.PLAIN, 16)); return this; } } } 

。

编辑：我发布了Nimbus的叙述，然后代码为Nimbus

 import java.awt.*; import java.awt.event.*; import java.util.Locale; import java.util.logging.Level; import java.util.logging.Logger; import javax.swing.*; import javax.swing.plaf.FontUIResource; import javax.swing.plaf.basic.BasicComboBoxRenderer; public class SystemFontDisplayer extends JFrame { private static final long serialVersionUID = 1L; private JFrame frame = new JFrame("Nimbus UIDeafaults and Font"); private JComboBox fontsBox; private javax.swing.Timer timer = null; private JButton testButton = new JButton("testButton"); private JTextField testTextField = new JTextField("testTextField"); private JLabel testLabel = new JLabel("testLabel"); public SystemFontDisplayer() { GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment(); String[] fontFamilyNames = ge.getAvailableFontFamilyNames(Locale.getDefault()); fontsBox = new JComboBox(fontFamilyNames); fontsBox.setSelectedItem(0); fontsBox.setRenderer(new ComboRenderer()); fontsBox.addItemListener(new ItemListener() { @Override public void itemStateChanged(ItemEvent e) { if (e.getStateChange() == ItemEvent.SELECTED) { final String fontName = fontsBox.getSelectedItem().toString(); fontsBox.setFont(new Font(fontName, Font.PLAIN, 16)); start(); } } }); fontsBox.setSelectedItem(0); fontsBox.getEditor().selectAll(); frame.setLayout(new GridLayout(4, 0, 20, 20)); frame.add(fontsBox); frame.add(testButton); frame.add(testTextField); frame.add(testLabel); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLocation(200, 105); frame.pack(); java.awt.EventQueue.invokeLater(new Runnable() { @Override public void run() { fontsBox.setPopupVisible(true); fontsBox.setPopupVisible(false); } }); frame.setVisible(true); } private void start() { timer = new javax.swing.Timer(750, updateCol()); timer.setRepeats(false); timer.start(); } public Action updateCol() { return new AbstractAction("text load action") { private static final long serialVersionUID = 1L; @Override public void actionPerformed(ActionEvent e) { final Font fnt = new Font(fontsBox.getSelectedItem().toString(), Font.PLAIN, 12); try { LookAndFeel lnf = UIManager.getLookAndFeel().getClass().newInstance(); final FontUIResource res = new FontUIResource(fnt); UIDefaults uiDefaults = lnf.getDefaults(); uiDefaults.put("Button.font", res); uiDefaults.put("TextField.font", res); uiDefaults.put("Label.font", res); UIManager.getLookAndFeel().uninitialize(); UIManager.setLookAndFeel(lnf); } catch (InstantiationException ex) { Logger.getLogger(SystemFontDisplayer.class.getName()).log(Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { Logger.getLogger(SystemFontDisplayer.class.getName()).log(Level.SEVERE, null, ex); } catch (UnsupportedLookAndFeelException ex) { Logger.getLogger(SystemFontDisplayer.class.getName()).log(Level.SEVERE, null, ex); } UIDefaults defaults = UIManager.getDefaults(); final FontUIResource res = new FontUIResource(fnt); defaults.put("Button.font", res); defaults.put("TextField.font", res); defaults.put("Label.font", res); SwingUtilities.updateComponentTreeUI(frame); /*final FontUIResource res = new FontUIResource(fnt); UIManager.getLookAndFeelDefaults().put("Button.font", res); UIManager.getLookAndFeelDefaults().put("TextField.font", res); UIManager.getLookAndFeelDefaults().put("Label.font", res); SwingUtilities.updateComponentTreeUI(frame);*/ } }; } public static void main(String arg[]) { try { for (UIManager.LookAndFeelInfo laf : UIManager.getInstalledLookAndFeels()) { if ("Nimbus".equals(laf.getName())) { UIManager.setLookAndFeel(laf.getClassName()); } } } catch (Exception e) { e.printStackTrace(); } java.awt.EventQueue.invokeLater(new Runnable() { @Override public void run() { SystemFontDisplayer systemFontDisplayer = new SystemFontDisplayer(); } }); } private class ComboRenderer extends BasicComboBoxRenderer { private static final long serialVersionUID = 1L; @Override public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) { super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus); final Object fntObj = value; final String fontFamilyName = (String) fntObj; setFont(new Font(fontFamilyName, Font.PLAIN, 16)); return this; } } } 

Answer 1

例如：从FontFamily列表创build一个新的字体，并用c.setFont（font）将它应用到你的组件。

第二种方法是searchTTF文件（例如），并用静态方法Font.createFont（new File（“…”））创build新的字体。

这个简单的应用程序将创build一个家庭的字体列表，并将其应用到JButton和JTextField。

 import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.io.*; /** FontSwitcher @author Stefan Wagner @date So 13. Mai 03:25:23 CEST 2012 */ public class FontSwitcher extends JFrame implements ActionListener { private static final String progname = "FontSwitcher 0.1"; private JTextField feedback; private JButton jb; private JList fontList; public FontSwitcher () { super (progname); JPanel mainpanel = new JPanel (); mainpanel.setLayout (new BorderLayout ()); this.getContentPane ().add (mainpanel); GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment (); String [] fonts = ge.getAvailableFontFamilyNames (); fontList = new JList (fonts); JScrollPane js = new JScrollPane (fontList); feedback = new JTextField ("Feedback"); jb = new JButton ("apply font"); jb.addActionListener (this); mainpanel.add (feedback, BorderLayout.NORTH); mainpanel.add (js, BorderLayout.CENTER); mainpanel.add (jb, BorderLayout.SOUTH); setSize (400, 800); setLocation (100, 100); setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE); setVisible (true); } public void actionPerformed (final ActionEvent e) { SwingWorker worker = new SwingWorker () { protected String doInBackground () throws InterruptedException { String cmd = e.getActionCommand (); if (cmd.equals ("apply font")) { String selectedFont = fontList.getSelectedValue ().toString (); Font font = new Font (selectedFont, Font.TRUETYPE_FONT, 14); jb.setFont (font); feedback.setFont (font); } return "done"; } protected void done () { feedback.setText ("done"); } }; worker.execute (); } public static void main (final String args[]) { Runnable runner = new Runnable () { public void run () { new FontSwitcher (); } }; EventQueue.invokeLater (runner); } }