String s;
/*code*/
s = "foo";
Is a whole new object being created, since the empty string can’t change?
String s; /*code*/ s = foo; Is a whole new object being created, since
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String s;
/*code*/
s = "foo";
Is a whole new object being created, since the empty string can’t change?
This:
doesn’t create an “empty string”, it’s simply an uninitialised variable.
This:
sets that variable to refer to a
Stringobject. It’s the object that’s immutable, not the variable.