Can I call setter in constructor?

You should not call getters and setters from the constructor. A constructor constructs the specific class in which it is defined. It is its job to initialise the fields because – well – nothing else will. The only way to guarantee initialising the fields is to assign them.

However, you can call getters and setters and any other methods inside a constructor provided you have done the proper initialization first before you call them.

The Java coding convention states that methods (getters and setters are methods) should be after constructors declarations . It just a convention and it exists to make code easier to read in general.

If you want to create a instance with the value of int parameter other than 0, you can use constructor . if you are using setters, they are actualy methods, so if you have more than one setters then it is better to use constructor.24 Nis 2017

In simple terms: Use constructor if you think initialization is mandatory before you can use the object . Use setter method when initialization of variable is non-mandatory to use the object.

The constructors are used to initialize the instance variable of a class or, create objects. The setter/getter methods are used to assign/change and retrieve values of the instance variables of a class.10 Eyl 2019