Operators

Java's operators, the symbols such as +, /, == and &&. They are the part of the language readers assume they already know from somewhere else, which is exactly why + and == are where the first real surprise lives. It covers how the operand types choose an operator's job, string joining and whole-number division, = against == against equals, short-circuiting, precedence, and i++ against ++i. It leaves out the bitwise and shift operators.