java - Simple if statement problem -

i trying return tostring if true.

i have code:

    public void printoutsailings() {     (sailing s:sailings) {         string hamburg = ("hamburg");         if ((s.getdepartureport()) == hamburg) {             system.out.println(s.tostringadjusted());         }    } } 

however nothing when run method (when should getting something). assume have somehow messed logic or not understood =,== , eq properly, i'm not sure.

there nothing wrong tostring or loop, , i'm not getting compiler or run time errors. it's logic wrong.

if put me right that'd appreciated. thanks.

you should using .equals() instead of == check string equality. try following:

if ((s.getdepartureport()).equals(hamburg)) {     system.out.println(s.tostringadjusted()); } 

in short, == checks see if 2 strings exact same reference, , .equals() checks see if 2 strings same.

it should said need use .equals() checking equality of object type, not strings. primitive types (int, double, char) should use == equality.

to compensate fact departure might null, switch condition around. read - hamburg.equals(s.getdepartureport())