does static variable initialized in default constructor?

Question

class Temp{
       final static int x;
     public static void main(String[] args){
    }
}

Compilation error: variable x not initialized in the default constructor

Why it says not initialized in default constructor since the variable is static? What is the role of default constructor here?

That's because the variable is final, you need to initialize it at the moment of its declaration. — Kevyn Meganck
– Kevyn Meganck, Commented Jul 13, 2017 at 10:56

assylias · Accepted Answer · 2017-07-13 11:05:00Z

3

You're right, that error message is not very helpful. A static final variable (the convention is generally to put static before final) must be initialised either at the declaration point or via a static block:

final static int x = 0;
//or
final static int y;
static {
  y = 0;
}

I can't say any related bug reports so you could submit one if you want.

answered Jul 13, 2017 at 11:05

assylias

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1 Comment

Rahul Gupta Over a year ago

Thanx... I tried for final non-static variable also... It gives the same error. In case of final non static... Error is acceptable

ROZZ · Accepted Answer · 2017-07-13 10:58:38Z

1

It is not only static... it is final static :) static final members should be initialized inline or in static block.

answered Jul 13, 2017 at 10:58

ROZZ

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3 Comments

Rahul Gupta Over a year ago

Thanx... But my question was that what is the role of default constructor here

Kevin Anderson Over a year ago

@RahulGupta it is most definitely not the role of any constructor, default or otherwise, to initialize static fields, and on that point, the message is misleading.

Rahul Gupta Over a year ago

@KevinAnderson thanx

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