java - Why can we use 'this' as an instance method parameter? -

java - Why can we use 'this' as an instance method parameter? -

what receiver parameter in java ? java 8 language specification talks this.

the jls gives a hint:

either way, receiver parameter exists solely allow type of represented object denoted in source code, type may annotated.

these 2 methods equivalent:

class test { void m1() { } void m2(test this) { } }

however latter allows add together annotations:

void m2(@myannotation test this) { } //where myannotation can defined example: @target(elementtype.type_use) @interface myannotation {}

java parameters java-8 this