Java Questions & Answers – Integer and Floating Data Types

Created on June 10, 2020 By

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Java Questions & Answers – Integer and Floating Data Types

1 / 10

1. What is the range of short data type in Java?

A. -128 to 127

B. -32768 to 32767

C. -2147483648 to 2147483647

D. None of the mentioned

2 / 10

2. What is the range of byte data type in Java?

A. -128 to 127

B. -32768 to 32767

C. -2147483648 to 2147483647

D. None of the mentioned

3 / 10

3. Which of the following are legal lines of Java code?

   1. int w = (int)888.8;   2. byte x = (byte)100L;   3. long y = (byte)100;   4. byte z = (byte)100L;

A. 1 and 2

B. 2 and 3

C. 3 and 4

D. All statements are correct

4 / 10

4. An expression involving byte, int, and literal numbers is promoted to which of these?

A. int

B. long

C. byte

D. float

5 / 10

5. Which of these literals can be contained in float data type variable?

A. -1.7e+308

B. -3.4e+038

C. +1.7e+308

D. -3.4e+050

6 / 10

6. Which data type value is returned by all transcendental math functions?

A. int

B. float

C. double

D. long

7 / 10

7. What will be the output of the following Java code?

```
    class average {
```

        public static void main(String args[])

```
        {
```

            double num[] = {5.5, 10.1, 11, 12.8, 56.9, 2.5};

```
            double result;
```
```
            result = 0;
```
```
            for (int i = 0; i < 6; ++i)
```

                result = result + num[i];

```
	    System.out.print(result/6);
```
```
        }
```
```
    }
```

A. 16.34

B. 16.566666644

C. 16.46666666666667

D. 16.46666666666666

8 / 10

8. What will be the output of the following Java statement?

```
class output {
```

        public static void main(String args[])

```
        {
```
```
            double a, b,c;
```
```
            a = 3.0/0;
```
```
            b = 0/4.0;
```
```
            c=0/0.0;
```
```
	    System.out.println(a);
```
```
            System.out.println(b);
```
```
            System.out.println(c);
```
```
        }
```
```
    }
```

A. Infinity

B. 0.0

C. NaN

D. all of the mentioned

9 / 10

9. What will be the output of the following Java code?

```
    class increment {
```

        public static void main(String args[])

```
        {
```
```
             int g = 3;
```
```
             System.out.print(++g * 8);
```
```
        }
```
```
    }
```

A. 25

B. 24

C. 32

D. 33

10 / 10

10. What will be the output of the following Java code?

```
    class area {
```

        public static void main(String args[])

```
        {
```
```
             double r, pi, a;
```
```
             r = 9.8;
```
```
             pi = 3.14;
```
```
             a = pi * r * r;
```
```
             System.out.println(a);
```
```
        }
```
```
    }
```

A. 301.5656

B. 301

C. 301.56

D. 301.56560000

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