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Does Java have an &= operator? I'm seeing this code:
boolean allReady = true;
for(Entry<String,Boolean> ace : factory.readyAces.entrySet()) {
allReady &= ace.getValue();
What is &=?
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The & operator in Java has two definite functions: As a Relational Operator: & is used as a relational operator to check a conditional statement just like && operator. Both even give the same result, i.e. true if all conditions are true, false if any one condition is false.
Java has two operators for performing logical And operations: & and &&. Both combine two Boolean expressions and return true only if both expressions are true.
& is a bitwise operator and compares each operand bitwise. It is a binary AND Operator and copies a bit to the result if it exists in both operands. (A & B) will give 12 which is 0000 1100. Whereas && is a logical AND operator and operates on boolean operands.
The symbol && denotes the AND operator. It evaluates two statements/conditions and returns true only when both statements/conditions are true.
It's the same as:
allReady = allReady & ace.getValue();
This is a bit-wise and. It means you always evaluate both sides, then take the "logical and" (result is only true if both sides are true).
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