You can only represent the ASCII subset of Unicode within the range of a byte. If you wanted to filter one or more Unicode characters from a Java stream, you're hosed!

What a Character Explains Unicode and character encoding to software engineers, and the pitfalls of working with international characters in Java, JavaScript and Python.

Character.getNumericValue(aChar) will let me convert a char into an int. I want to know how I can reverse the process and get a char from an integer? Thanks.

CharMap is a Java 5.0 graphical (GUI) application to display Unicode characters or glyphs in text fonts, and copy those characters to the system clipboard. Its major purpose is as a visual accessory ...