Give the output of the following code

System.out.println("Good".concat("Day"));

1. GoodDay
2. Good Day
3. Goodday
4. goodDay

The array char arr[8] occupies :

1. 32
2. 8
3. 16
4. 24

Assertion (A) Line comment is used for a single line of comment.
Reason (R) A line comment starts with forward slash and asterisk(/*).

1. Both Assertion (A) and Reason (R) are true and Reason (R) is a correct explanation of Assertion (A).
2. Both Assertion (A) and Reason (R) are true and Reason (R) is not a correct explanation of Assertion (A).
3. Assertion (A) is true and Reason (R) is false.
4. Assertion (A) is false and Reason (R) is true.

Read the following text and choose the correct answer:

Byte streams are used to perform input and output of 8-bytes. They are used to read bytes from the input stream and write bytes to the output stream. Mostly, they are used to read or write raw binary data.

Which of these class is used to read and write bytes in a file?

1. FileReader
2. FileWriter
3. FileInputStream
4. InputStreamReader