primitive-boolean To String concatenation/conversion

Question

how does this work? I can\'t seem to find an answer.

boolean bool=true;
System.out.println(\"the value of bool is : \" + true);
//or
System.out.println(\"the         


        

Answer 1

It's a compiler thing. If the right operand for concatenation is an object, the object is sent the toString() method whereas if the operand is a primitive then the compiler knows which type-specific behavior to use to convert the primitive to an String.