# Quiz Discussion

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;
Course Name: Java

• 1]

1, 2 & 3

• 2]

1 & 4

• 3]

1, 2, 3 & 4

• 4]

3 & 2

##### Solution
No Solution Present Yet

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# Quiz
1
Discuss

Which of these have highest precedence?

• 1]

()

• 2]

++

• 3]

*

• 4]

>>

##### Solution
2
Discuss

What will be the output of the following Java code?

    class Relational_operator
{
public static void main(String args[])
{
int var1 = 5;
int var2 = 6;
System.out.print(var1 > var2);
}
}

• 1]

1

• 2]

0

• 3]

true

• 4]

false

##### Solution
3
Discuss

What will be the output of the following Java program?

    class increment
{
public static void main(String args[])
{
double var1 = 1 + 5;
double var2 = var1 / 4;
int var3 = 1 + 5;
int var4 = var3 / 4;
System.out.print(var2 + " " + var4);

}
}

• 1]

1 1

• 2]

0 1

• 3]

1.5 1

• 4]

1.5 1.0

##### Solution
4
Discuss

Which right shift operator preserves the sign of the value?

• 1]

<<

• 2]

>>

• 3]

<<=

• 4]

>>=

##### Solution
5
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
6
Discuss

Decrement operator, −−, decreases the value of variable by what number?

• 1]

1

• 2]

2

• 3]

3

• 4]

4

##### Solution
7
Discuss

What will be the output of the following Java program?

    class bitwise_operator
{
public static void main(String args[])
{
int var1 = 42;
int var2 = ~var1;
System.out.print(var1 + " " + var2);
}
}

• 1]

42 42

• 2]

43 43

• 3]

42 -43

• 4]

42 43

##### Solution
8
Discuss

On applying Left shift operator, <<, on integer bits are lost one they are shifted past which position bit?

• 1]

1

• 2]

32

• 3]

33

• 4]

31

##### Solution
9
Discuss

Which of these statements is correct?

• 1]

true and false are numeric values 1 and 0

• 2]

true and false are numeric values 0 and 1

• 3]

true is any non zero value and false is 0

• 4]

true and false are non numeric values

##### Solution
10
Discuss

What will be the output of the following Java program?

    class bitwise_operator
{
public static void main(String args[])
{
int a = 3;
int b = 6;
int c = a | b;
int d = a & b;
System.out.println(c + " "  + d);
}
}

• 1]

7 2

• 2]

7 7

• 3]

7 5

• 4]

5 2

# Quiz