Assignment operator "=": (Recommended: java video tutorial)
Function: Return the value of the expression on the right side of the operator Assign a value to the variable on the left or a final-modified variable.
Left side: variable, or final modified variable
Right side: can be any expression (the type of the returned value must be compatible with the left side).
= is an assignment operator that assigns a value to a variable, and then the value can be referenced through the variable. For example:
a = 10; // 将 10 赋给变量 a
Operands: The data involved in the operation are called operands.
Expression: A whole that uses operators to connect several operands. Each operand can also be viewed as a simple expression.
Return value: There will be a return result after the expression operation is completed.
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