How to use Special Chars in Java/Eclipse

Question

How can I use/display characters like ♥, ♦, ♣, or ♠ in Java/Eclipse?

When I try to use them directly, e.g. in the source code, Eclipse cannot save the file.

Answer 1

Finding the unicode escape sequence: see these Unicode charts. Your characters are in the Misc. Symbols chart, \u2660 and up.