java.is.for.desktop java.is.for.desktop - 6 months ago 15
Java Question

GUI: How can I find out if certain Unicode characters are supported?

I noticed that Metal L&F doesn't support certain arrow characters from Unicode, while Nimbus and GTK L&Fs do support them.

Unsupported characters are just displayed as:

...


Can I


  1. either look up (manually), which L&F supports which Unicode chars,

  2. or find it out at runtime?



EDIT: Or, should it only depend on the L&F's default font, my question perhaps should be:

"how do I find out, which Java font supports which Unicode characters?"

Answer

You can use the canDisplay method to test if a java.awt.Font object can display a given character. You can typically get the font from GUI components using the getFont() method.

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