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Precedence and Associativity of Java operators

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Precedence is the order to solve the operators. For simplicity, let's see the table

Operator (Higher to Lower Precedence)

  Operators Precedence
postfix expr++ expr--
unary ++expr --expr +expr -expr ~ !
multiplicative * / %
additive + -
shift << >> >>>
relational < > <= >= instanceof
equality == !=
bitwise AND &
bitwise exclusive OR ^
bitwise inclusive OR |
logical AND &&
logical OR ||
ternary ? :
assignment = += -= *= /= %= &= ^= |= <<= >>= >>>=

Now, If we take an example and try to solve an expression, There can be a case of operators with the same precedence.

 ex. 10 * 20 / 4 % 2

 When operators of equal precedence appear in the same expression, a rule must govern which is evaluated first. Now we use their Associativity.

 There is two kind of Associativity:
  • Left to Right
  • Right to Left
For Unary Operators:
Except the postfix operators(expr++ expr--), All the unary operators have got Right to Left Associativity.

 For Binary Operators:
Except the assignment operators, All binary operators have got left to right Associativity.

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