void () { String constant = "" + 10; final String foo = "" + 4 + <warning descr="Empty string in concatenation">""</warning> + 3; String bar = <warning descr="Empty string in concatenation">""</warning> + new Integer(4) + "asdf"; Float aFloat = new Float(3.0); String baz = <warning descr="Empty string in concatenation">""</warning> + aFloat; String trivial = <warning descr="Empty string in concatenation">""</warning> + " "; String doubleConstant = "foo" + (<warning descr="Empty string in concatenation">""</warning>) + (<warning descr="Empty string in concatenation">""</warning>); }