Java quiz 21: Working with operators

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This code shows how the operators and the operands work in Java.

Java quiz 21: Working with operators

Level: Easy

What is written to the standard output as the result of executing the following code?

public class MyClass
{
static int x = 3;
static int y = 7;
static boolean isDefect;

public static void main(String[] args)
{
if(x == (y - 4) && !isDefect)
{
x += 2;
y += 3;
}
if(y == 10 || x == 3)
{
y += 2;
}
System.out.print("x" + x + ", y" + y);
}
}
Author: Sar Maroof

1. The first conditional statement if(x == (y – 4) && !isDefect) returns true, because
x = y – 4 = 3 and !isDefect is false. Boolean variables are by default false.
2. The statement x += 2 increments the value of x by 2. So, x = 3 + 2 = 5 and the statement y += 3 increments the value of y by 3. So, y = 7 + 3 = 10.
3. By sequences of if statements the body of all the true statements are executed.
4. The statement if(y == 10 || x == 3) also returns true, because y is equal to 10. x is not equal to 3, but by || (OR) operators the statement returns true if one of the operands is true.
5. The statement y += 2 increments the value of y by 2. So, y = 10 + 2. Sar Maroof is a professional software development teacher, gives master classes and publishes technical articles. He is also an expert software developer and worked for several big as well as small companies and later as a freelancer.