Why x value 1 is used even though we have static x value as 2 in this code?

Question

Java variables usage
https://code.sololearn.com/cE0c5dhfBSPD/?ref=app

Answer 1

static members are bound to the class, not to the instance. So to refer the static <x> we need to specify the class e.g.

System.out.print( Program.x + y );

Here we use 'Program' because <x> is defined as class Program's member.

Answer 2

Always first compiler search variables existence in stack memory of local variables.. If it not found then it search in global area.

There x in main method shadowing the global static variable x.

Static variables are stored in class area in java. Where as local variables sre stored in stack memory.

So remove x in main, then you get 4 as output. If you want to use global static variable x in main, even if you have local variable x exist, then use Program.x as @ipang suggested..

Hope it helps...

Answer 3

Jayakrishna🇮🇳 thank you

Answer 4

Ipang thank you