Even though the introduction of Unicode technically solved this problem, you can still encounter situations in which some or all of your Unicode characters will not display properly in Java programs.

PlainText is a Java 1.4 graphical (GUI) application to convert Unicode characters to plain text characters, for example, to convert left and right quotation marks into plain quotes for web pages.

Character Map (Java) by Keith Fenske. Display and copy Unicode characters or glyphs in text fonts. - kwfenske/character-map-java ...