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0005 The Primitive Types

Java defines eight primitive types of data: byte, short, int, long, char, float, double, and boolean. Primitive Type Reserved Word Size Min Value Max Value Boolean boolean N/A N/A N/A Character char 16-bit Unicode 0 Unicode 216 - 1 Byte integer byte 8-bit -128 +127 Short integer short 16-bit -21 +215 - 1 Integer int 32-bit -231 +231 - 1 Long integer long 64-bit -263 +263 - 1 Floating-point float 32-bit 1.4e-045 3.4e+038 Double precision floating-point double 64-bit 4.9e-324 1.8e+308 byte, short, int, and long are for whole-valued signed numbers. float and double are fractional precision numbers. char represents symbols in a character set, like letters and numbers. boolean represents true/false values.