# Quiz Discussion

Which of these have highest precedence?

Course Name: Java

• 1]

()

• 2]

++

• 3]

*

• 4]

>>

##### Solution
No Solution Present Yet

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# Quiz
1
Discuss

What will be the output of the following Java code?

    class Output
{
public static void main(String args[])
{
int x , y = 1;
x = 10;
if (x != 10 && x / 0 == 0)
System.out.println(y);
else
System.out.println(++y);
}
}

• 1]

1

• 2]

2

• 3]

Runtime error owing to division by zero in if condition

• 4]

Unpredictable behavior of program

##### Solution
2
Discuss

Which of these is returned by “greater than”, “less than” and “equal to” operators?

• 1]

Integers

• 2]

Floating – point numbers

• 3]

Boolean

• 4]

None of the mentioned

##### Solution
3
Discuss

Which of these statements are incorrect?

• 1]

The left shift operator, <<, shifts all of the bits in a value to the left specified number of times

• 2]

The right shift operator, >>, shifts all of the bits in a value to the right specified number of time

• 3]

The left shift operator can be used as an alternative to multiplying by 2

• 4]

The right shift operator automatically fills the higher order bits with 0

##### Solution
4
Discuss

With x = 0, which of the following are legal lines of Java code for changing the value of x to 1?

   1. x++;
2. x = x + 1;
3. x += 1;
4. x =+ 1;
• 1]

1, 2 & 3

• 2]

1 & 4

• 3]

1, 2, 3 & 4

• 4]

3 & 2

##### Solution
5
Discuss

Which of these statements are incorrect?

• 1]

Assignment operators are more efficiently implemented by Java run-time system than their equivalent long forms

• 2]

Assignment operators run faster than their equivalent long forms

• 3]

Assignment operators can be used only with numeric and character data type

• 4]

None of the mentioned

##### Solution
6
Discuss

What will be the output of the following Java program?

class Output
{
public static void main(String args[])
{
int a,b,c,d;
a=b=c=d=20
a+=b-=c*=d/=20
System.out.println(a+" "+b+" "+c+" "+d);

}
}

• 1]

compile time error

• 2]

runtime error

• 3]

a=20 b=0 c=20 d=1

• 4]

none of the mentioned

##### Solution
7
Discuss

What will be the output of the following Java code?

    class bool_operator
{
public static void main(String args[])
{
boolean a = true;
boolean b = !true;
boolean c = a | b;
boolean d = a & b;
boolean e = d ? b : c;
System.out.println(d + " " + e);
}
}

• 1]

false false

• 2]

true ture

• 3]

true false

• 4]

false true

##### Solution
8
Discuss

What will be the output of the following Java code?

    class operators
{
public static void main(String args[])
{
int var1 = 5;
int var2 = 6;
int var3;
var3 = ++ var2 * var1 / var2 + var2;
System.out.print(var3);
}
}

• 1]

10

• 2]

11

• 3]

12

• 4]

56

##### Solution
9
Discuss

What will be the output of the following Java code?

    class Output
{
public static void main(String args[])
{
boolean a = true;
boolean b = false;
boolean c = a ^ b;
System.out.println(!c);
}
}

• 1]

0

• 2]

1

• 3]

true

• 4]

false

##### Solution
10
Discuss

What will be the output of the following Java program?

    class Output
{
public static void main(String args[])
{
int a = 1;
int b = 2;
int c = 3;
a |= 4;
b >>= 1;
c <<= 1;
a ^= c;
System.out.println(a + " " + b + " " + c);
}
}

• 1]

3 1 6

• 2]

2 2 3

• 3]

2 3 4

• 4]

3 3 6

# Quiz