void (int x, String y) { String s = "" + x; System.out.println(s); s = x + ""; System.out.println(s); s = <warning descr="Empty string in concatenation">""</warning> + y; //warn System.out.println(s); s = y + <warning descr="Empty string in concatenation">""</warning>; //warn System.out.println(s); s = <warning descr="Empty string in concatenation">""</warning> + x + y; //warn System.out.println(s); s = x + <warning descr="Empty string in concatenation">""</warning> + y; //warn System.out.println(s); s = y + <warning descr="Empty string in concatenation">""</warning> + x; //warn System.out.println(s); s = x + "" + x; System.out.println(s); s = y + <warning descr="Empty string in concatenation">""</warning> + y; //warn System.out.println(s); s = y + x + <warning descr="Empty string in concatenation">""</warning>; //warn System.out.println(s); s = x + x + ""; System.out.println(s); s = <warning descr="Empty string in concatenation">""</warning> + "x"; //warn System.out.println(s); s = "" + x + <warning descr="Empty string in concatenation">""</warning>; //warn System.out.println(s); s = "" + x + <warning descr="Empty string in concatenation">""</warning> + 1; //warn System.out.println(s); s = 1 + "" + x + <warning descr="Empty string in concatenation">""</warning> + 1; //warn System.out.println(s); s = "" + 1 + <warning descr="Empty string in concatenation">""</warning> + x + <warning descr="Empty string in concatenation">""</warning> + 1; //warn System.out.println(s); }