OK, this was an illusion - it looked like SansSerif.bold was causing a problem, but that was because of threading (the System.out.println was happening in the "main" thread, while the repaint was happening for the prior font in the event dispatch thread). It ended up that there were quite a few fonts that caused the JDK to barf, and after removing them all things are now working.
So, the long and short of it:
On Ubuntu (and, I suspect, Debian in general, and possibly Linux in general?) the JDK (1.5) can get real picky about which fonts you have installed... if it encounters a font it doesn't like, it crashes. The fix for me was to have a more thorough FontTest which actually rendered the font in order to detect which fonts were causing crashes. I then removed each font until the test runs without crashing. My final FontTest is here:
import java.awt.Font;
import java.awt.GraphicsEnvironment;
import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingUtilities;
public class FontTest {
public static void main(String[] args) {
final JFrame frame = new JFrame("Font test window");
frame.setSize(800, 600);
frame.getContentPane().setLayout(new BorderLayout());
final JLabel label = new JLabel("The quick brown fox jumped over the lazy dog's back!" +
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" +
"@#$%^&*()_+-=,./<>?'\";:[{]}\\|`~");
label.setFont(label.getFont().deriveFont(16.0f));
frame.getContentPane().add(label, BorderLayout.CENTER);
frame.pack();
frame.setVisible(true);
try {
final Font[] fonts = GraphicsEnvironment.getLocalGraphicsEnvironment().getAllFonts();
for (int i = 0; i < fonts.length; i++) {
final int idx = i;
SwingUtilities.invokeAndWait(new Runnable() {
public void run() {
final Font font = fonts[idx];
final String name = font.getName();
System.out.println("Checking Font: " + name);
final boolean t1 = testChars(font, 'a', 'z');
final boolean t2 = testChars(font, 'A', 'Z');
final boolean t3 = testChars(font, '0', '9');
System.out.println("Executing canDisplayUpTo...");
final boolean t4 = font.canDisplayUpTo("The quick brown fox jumped over the lazy dog's back!@#$%^&*()_+-=,./<>?'\";:[{]}\\|`~") == -1;
System.out.println("Executing printTest...");
printTest(frame, label, font);
if (t1 && t2 && t3 && t4) {
System.out.println(" OK.");
} else {
System.out.println();
}
}
});
}
System.out.println("Finished");
System.exit(0);
} catch(Exception e) {
throw new RuntimeException(e);
}
}
private static boolean testChars(final Font font, final int start, final int end)
{
System.out.println("testChars('" + (char)start + "', '" + (char)end + "')");
boolean ret = true;
for(int i = start;i <= end;i++) {
if(!font.canDisplay((char)i)) {
ret = false;
}
}
return ret;
}
private static void printTest(final JFrame frame, final JLabel label, final Font font)
{
System.out.println("Entering printTest.");
final Font derived = font.deriveFont(16.0f);
System.out.println("Derived font");
label.setFont(derived);
System.out.println("Set font");
frame.repaint();
System.out.println("Repainted and leaving printTest.");
}
}
I ended up having to put the SwingUtilities.invokeAndWait in the loop to get things to work. I should note that because of this the repaint (and thus rendering of the font) for a font occurs after the invokeAndWait returns (because it is queued on the event thread) - so, when a crash occurs, if it is due to rendering, then it will seem the last font printed succeeded, but that last font will be the one whose rendering caused the crash.
I suppose the page that I referenced in an earlier message (which the original FontTest) program should be updated.
- Andy
