Strings

Question 1

Conceptually, what is a String?

Answer 1

A String is a data type that represents text.

Question 2

Is a String a value or reference type?

Answer 2

Reference type

Question 3

How many bytes in a String?

Answer 3

22 bytes

Question 4

How many bytes in a character?

Answer 4

1 byte

Question 5

What is a char?

Answer 5

A single text character.

Question 6

Can I alter a String? How?

Answer 6

Strings are immutable. Once you have created a string you cannot later change that string object.

BUT

You can modify them by using substring(), concat(), replace(), trim(), etc.

Question 7

Give 3 examples of reference types.

Answer 7

String, Scanner, Random