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Jaggies
A slang term, maybe, but 'jaggies' refers to jagged diagonal lines that appear in a low Resolution image. Pixels are square, so if large pixels are being used to represent a diagonal, you'll be able to see the corners of each, creating a saw-like edge. Anti-aliasing is used to soften jaggies, whereby the software will attempt to calculate 'in-between' shades to blur the line a little and make it look smoother.

Java
A programming language used to develop applications such as games on mobile handsets, allowing high-quality graphics and effects.