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Integer Representation Bit-- Binary Digit 1 byte = 8 bits 1 word = N bytes, take N to be 2 (e.g., 16 bit machine) Integer takes up 2 bytes; can be signed or unsigned.
The Java programming language is statically-typed, which means that all variables must first be declared before they can be used. This involves stating the variable's type and name, as you've already seen: Doing so tells your program that a field named "gear" exists, holds numerical data, and has an initial value of "1".
The Java programming language also provides operators that perform bitwise and bit shift operations on integral types. The operators discussed in this section are less commonly used.
Java's bitwise operators operate on individual bits of integer (int and long) values. If an operand is shorter than an int, it is promoted to int before doing the operations. It helps to know how integers are represented in binary.
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