java - 为什么字体在不同的 jres 上加载不同？

Question

我正在尝试将字体加载到用 java 1.4 编写的 swing 应用程序上的标签/按钮文本。由于某种原因，字体加载无一异常(exception)，但在按钮上显示完全不同的字体。当我在 1.5 jre 上运行相同的代码时，它似乎工作正常。为什么会这样？

更新在 1.4、1.5 上打印系统输出显示:

jre 1.5 : java.awt.Font[family=Futura LT,name=Futura LT Medium,style=bold,size=14]

jre 1.4:java.awt.Font[family=dialog,name=Futura LT Medium,style=bold,size=14]

字体名族不同!这是为什么？

下图是它在 diff jres 上的样子(左边是 1.5，右边是 1.4)

代码

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Font;
import java.awt.FontFormatException;
import java.io.IOException;
import java.io.InputStream;

import javax.swing.JButton;
import javax.swing.SwingUtilities;

import org.jdesktop.swingx.MultiSplitLayout;
import org.jdesktop.swingx.MultiSplitPane;
import org.jdesktop.swingx.MultiSplitLayout.Node;



/**
 * 
 * @author Hans Muller (Hans.Muller@Sun.COM)
 */
public class Example2 extends Example {
    protected void initialize(String[] ignore) {
        super.initialize(ignore);

        String layoutDef = "(COLUMN (LEAF name=column1 weight=0.25) (LEAF name=column2 weight=0.25) (LEAF name=column3 weight=0.25) (LEAF name=column4 weight=0.25) )";
        Node modelRoot = MultiSplitLayout.parseModel(layoutDef);

        MultiSplitPane multiSplitPane = new MultiSplitPane();
        multiSplitPane.setDividerSize(5);
        multiSplitPane.getMultiSplitLayout().setModel(modelRoot);
        JButton comp = new JButton("TEST TEXT");
        comp.setFont(loadFont("FuturaLT.ttf",14,Font.BOLD));
        multiSplitPane.add(comp, "column1");
        multiSplitPane.add(new JButton("Test Text"), "column2");
        Container cp = mainFrame.getContentPane();
        cp.add(multiSplitPane, BorderLayout.CENTER);
    }

    private static Font loadFont(String fontName, float size, int style) {

        InputStream openStream = FontColorScheme.class
                .getResourceAsStream("resources/fonts/FuturaLT/"
                        + fontName);
        ;
        try {
            Font font = Font.createFont(Font.TRUETYPE_FONT, openStream);
            Font finalFont = font.deriveFont((float) size).deriveFont(style);
            System.out.println("Loading font " + fontName + " " + finalFont);
            return finalFont;
        } catch (FontFormatException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (openStream != null) {
                try {
                    openStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return null;
    }

    public static void main(final String[] args) {
        System.setProperty("awt.useSystemAAFontSettings", "off");
        Runnable doCreateAndShowGUI = new Runnable() {
            public void run() {
                try {
                    Example2 app = new Example2();
                    app.initialize(args);
                    app.show();
                } catch (Exception e) {
                    // TBD log an error
                }
            }
        };
        SwingUtilities.invokeLater(doCreateAndShowGUI);
    }
}

Answer 1

渲染正确，有3个区域

• Font 使用 LookAndFeel(Metal 和 Windows)

• 字体 和 NativeOS，more in question by @kleopatra about Win7, everything depends of theme and setting for Font, rendering, areo .... ，懒得在Win8里测试了

• Java2d, Graphics(2D) in Java1.4.xxx, core有变化，因为输出编译在Java1.5.xxx 与今天的Java6/7 非常相似