Java Questions & Answers – Character and Boolean Data Types

Created on June 10, 2020 By

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Java Questions & Answers – Character and Boolean Data Types

1 / 10

1. What is the numerical range of a char data type in Java?

A. -128 to 127

B. 0 to 256

C. 0 to 32767

D. 0 to 65535

2 / 10

2. Which of these coding types is used for data type characters in Java?

A. ASCII

B. ISO-LATIN-1

C. UNICODE

D. None of the mentioned

3 / 10

3. Which of these values can a boolean variable contain?

A. True & False

B. 0 & 1

C. Any integer value

D. true

4 / 10

4. Which of these occupy first 0 to 127 in Unicode character set used for characters in Java?

A. ASCII

B. ISO-LATIN-1

C. None of the mentioned

D. ASCII and ISO-LATIN1

5 / 10

5. Which one is a valid declaration of a boolean?

A. boolean b1 = 1;

B. boolean b2 = ‘false’;

C. boolean b3 = false;

D. boolean b4 = ‘true’

6 / 10

6. What will be the output of the following Java program?

```
    class array_output {
```

        public static void main(String args[])

```
        {
```

            char array_variable [] = new char[10];

```
	    for (int i = 0; i < 10; ++i) {
```

                array_variable[i] = 'i';

                System.out.print(array_variable[i] + "" );

```
                i++;
```
```
            }
```
```
        }
```
```
    }
```

A. i i i i i

B. 0 1 2 3 4

C. i j k l m

D. None of the mentioned

7 / 10

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

```
    class mainclass {
```

        public static void main(String args[])

```
        {
```
```
            char a = 'A';
```
```
            a++;
```
```
	    System.out.print((int)a);
```
```
        }
```
```
    }
```

A. 66

B. 67

C. 65

D. 64

8 / 10

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

```
    class mainclass {
```

        public static void main(String args[])

```
        {
```
```
            boolean var1 = true;
```
```
	    boolean var2 = false;
```
```
	    if (var1)
```
```
	        System.out.println(var1);
```
```
	    else
```
```
	        System.out.println(var2);
```
```
       }
```
```
    }
```

A. 0

B. 1

C. true

D. false

9 / 10

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

```
    class booloperators {
```

        public static void main(String args[])

```
        {
```
```
            boolean var1 = true;
```
```
	    boolean var2 = false;
```
```
	    System.out.println((var1 & var2));
```
```
        }
```
```
    }
```

A. 0

B. 1

C. true

D. false

10 / 10

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

```
    class asciicodes {
```

        public static void main(String args[])

```
        {
```
```
            char var1 = 'A';
```
```
	    char var2 = 'a';
```

	    System.out.println((int)var1 + " " + (int)var2);

```
        }
```
```
    }
```

A. 162

B. 65 97

C. 67 95

D. 66 98

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