How to calculate the font's width?

Question

I am using java to draw some text, but it is hard for me to calculate the string\'s width. for example: zheng中国... How long will this string occupy?

Answer 1

Take a look at this great presentation, especially "Text Measurement" part. It explains available sizes and their uses: Advanced Java 2D™ topics for Desktop Applications.

Some more information in Java2D FAQ: What is the difference between logical, visual and pixel bounds?