Determine output:
class A{
public static void main(String args[]){
int x;
x = 10;
if(x == 10){
int y = 20;
System.out.print("x and y: "+ x + " " + y);
y = x*2;
}
y = 100;
System.out.print("x and y: " + x + " " + y);
}
}
class A{
public static void main(String args[]){
int x;
x = 10;
if(x == 10){
int y = 20;
System.out.print("x and y: "+ x + " " + y);
y = x*2;
}
y = 100;
System.out.print("x and y: " + x + " " + y);
}
}
A. 10 20 10 100
B. 10 20 10 20
C. 10 20 10 10
D. Error
Answer: Option D
Solution (By Examveda Team)
The code defines a class A with a main method.Inside the main method:
- An integer variable x is declared and assigned the value 10.
- There's an if statement that checks if x is equal to 10. This condition is true.
- Inside the if block:
- Another integer variable y is declared and assigned the value 20.
- The program prints "x and y: 10 20" using
System.out.print
.- The value of y is updated to x * 2, which is 20.
- Outside the if block:
- The program attempts to update the value of y to 100. However, this line causes a compilation error because the variable y was declared inside the if block and is not accessible outside of it.
- The program also attempts to print "x and y: 10 100". This line also causes a compilation error because the variable y is not in scope at this point.
So, the correct answer is "Error" because the code contains compilation errors due to the variable y being declared within the if block and not being accessible outside of it. The program cannot find the symbol y outside of the if block, leading to compilation errors.
class Test1 {
public
static void main(String[] args)
{
int x = 20;
System.out.println(x);
}
static
{
int x = 10;
System.out.print(x + " ");
}
}
variable declared inside the block,method,or constructors are considered as local variable hence we cant access it outside of all above and if we then we will get compile time error.