Quiz Discussion

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);
 
        } 
}

 

Course Name: Java

  • 1]

    compile time error

  • 2]

    runtime error

  • 3]

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

  • 4]

    none of the mentioned

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 is the output of relational operators?

  • 1]

    Integer

  • 2]

    Boolean

  • 3]

    Characters

  • 4]

    Double

Solution
3
Discuss

Which operator is used to invert all the digits in a binary representation of a number?

  • 1]

    ~

  • 2]

    <<<

  • 3]

    >>>

  • 4]

    ^

Solution
4
Discuss

 What is the value stored in x in the following lines of Java code?

   int x, y, z;
    x = 0;
    y = 1;
    x = y = z = 8;
  • 1]

    0

  • 2]

    1

  • 3]

    9

  • 4]

    8

Solution
5
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
6
Discuss

Can 8 byte long data type be automatically type cast to 4 byte float data type?

  • 1]

    true

  • 2]

    false

Solution
7
Discuss

Which of the following operators can operate on a boolean variable?

   1. &&
   2. ==
   3. ?:
   4. +=
  • 1]

    3 & 2

  • 2]

     1 & 4

  • 3]

     1, 2 & 4

  • 4]

    1, 2 & 3

Solution
8
Discuss

Which of the following can be operands of arithmetic operators?

  • 1]

    Numeric

  • 2]

    Boolean

  • 3]

    Characters

  • 4]

    Both Numeric & Characters

Solution
9
Discuss

Which of these statements are incorrect?

  • 1]

    Equal to operator has least precedence

  • 2]

    Brackets () have highest precedence

  • 3]

    Division operator, /, has higher precedence than multiplication operato

  • 4]

    Addition operator, +, and subtraction operator have equal precedence

Solution
10
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
# Quiz