Java (ArrayList check with object's int) -

i have make arraylist contains object, object has 1 int year lets 1 , don't object same year 1.

if 1 object has int = 1 , dont want object int(1) in list. want deny it.

should try using equal?

something

@override public boolean equals(object o){     object object = (object)o;     return this.getint.equals(object.getint()); }

either use set...which explicitly disallows duplicates, or check if list contains element on insertion.

@override public boolean add(t element) {     if(contains(element)) {         return false;     } else {         return super.add(element);     } }

overriding equals wouldn't far, you'd overriding list (i.e. you'd checking if 2 lists equal).

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