Is it legal to declare a variable in the constructor in java? Example

Question

Is it legal to declare a variable in the constructor in java? example.

Time(){
        long timeMill = System.currentTimeMillis();
        int second = (int) (timeMill / 1000) ;
        this.second = second % 60;
        int minute = (int) (timeMill / 60);
        this.minute = minute % 60;
        int hour = (int) (timeMill / 360);
        this.hour = hour % 24;

    }

Yes, it is. If it compiles, it's allowed. And that does compile. — blalasaadri, Mar 27 '15 at 13:36
Check here the answer http://stackoverflow.com/questions/3918578/should-i-initialize-variable-within-constructor-or-outside-constructor — knowledge flow, Mar 27 '15 at 13:37
yes. It compiles fine but scope of these variable is limited to constructor then. So, it is always advisable to declare variables outside of constructor and initializing them inside constructor. check [this](http://stackoverflow.com/questions/18649126/can-you-declare-an-instance-variable-as-a-parameter-in-a-constructor) — codiacTushki, Mar 27 '15 at 13:42

score 1 · Answer 1 · answered Mar 27 '15 at 13:36

Yes.

There's nothing wrong with declaring a variable constructor-scoped, just as there's nothing wrong with scoping a variable to a method in general.

It really depends on the context.

Fine print:

Careful about variables declared within constructors or methods, they have no default values and must be assigned before being referenced, otherwise your code will not compile.

Is it legal to declare a variable in the constructor in java? Example

1 Answers1