What is Output?

Question

class A
{
final int x;
{
x= 23+27;
}
public static void main(String arts[])
{
A ob = new A();
System.out.println(x);
}
}

Answer 1

To solve the problem just now exchange "final" with "static". Ex:
class A
{
static int x;
{
x= 23+27;
}
public static void main(String arts[])
{
A ob = new A();
System.out.println(x);
}
}

Answer 2

x is non static variable. so you can't refer it in a static method. you have to declare it as static.

Answer 3

error

Answer 4

Nothing, an error as you can refer to x from an static content

Answer 5

replace final by static then
Ans is 50
after creating the object, constructor is invoked and object is initialised.

Answer 6

There are two error in this code:
You referenced non-static constant (x) in static method.
Final is a keyword that describes your entity is a constant, that means you can't change its value. So, an assignment to x is irrelevant. To solve the problem change your entity to a variable by removing final keyword and make it static to call it from a static method by adding static keyword. Ex. static int x;
That's all.