1.

What is the result of the below program?

Answer»
class X {
static int i = 1111;

static{
i = i-- - --i; //L1
}

{
i = i++ + ++i; //L2
}
}

class Y extends X{
static{
i = --i - i--; //L3
}
{
i = ++i + i++; //L4
}
}

public class DriverClass{
public static void main(String[] args){
Y y = new Y();
System.out.println(y.i); //L5
}
}

Let us evaluate the expressions one by one:
L1 ->

i = i-- - --i;
i = 1111 - 1109 = 2

L2 ->

i = i++ + ++i;
i = 0 + 2 = 2

L3 ->

i = --i - i--;
i = 1 - 1 = 0

L4 ->

i = ++i + i++;
i = 3 + 3 = 6 = y.i

L5 ->
y.i = i from class Y which is 6.
Hence the output is 6.


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