Java Operator: |= -

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• what “|=” mean? (pipe equal operator) 6 answers
• java |= operator question [duplicate] 5 answers

i came across following line inside sourcecode.

int sequ |= element.sequence 

what operator |= mean ? haven't seen before.

=| compound assignment operator, similar +=, -=, /=, or *=, bitwise or instead.

this equivalent to:

sequ = (int) (sequ | element.sequence); 

where | bitwise or operation, meaning independently ors bits in left operand in right operand, result. cast not necessary if element.sequence int.

note: original code wouldn't make sense:

int sequ |= element.sequence 

you can't declare there , , or else. need have been declared , assigned before, such in:

int sequ = 0; /* or other value */ sequ |= element.sequence;