20 easy java questions?? Thanks to whomever helps me! I really appriciate it!

1.

A sequence of characters enclosed within double quotation marks is a _____.

a. command

b. symbolic string

c. literal string

d. prompt

2.

To create a String object, you can use the keyword _____ before the constructor call, but you are not required to use this format.

a. create

b. object

c. new

d. char

3.

A String variable name is a _____ which is a variable that holds a memory address.

a. literal

b. constant

c. value

d. reference

4.

The term that programmers use to describe objects that cannot be changed is _____.

a. nonvolatile

b. irrevocable

c. immutable

d. stable

5.

Which of the following is not a commonly used Character method?

a. isWhiteSpace()

b. toLowerCase()

c. isDigit()

d. toUpper()

6.

The Character class is defined in _____.

a. java.String

b. java.text

c. java.lang

d. java.Character

7.

The method that determines whether two String objects are equivalent, regardless of case, is _____.

a. equalsNoCase()

b. equals()

c. toUpperCase()

d. equalsIgnoreCase()

8.

A String is an example of an object that can't be changed, also known as _____.

a. dynamic

b. static

c. immutable

d. immature

9.

A String variable that does not yet hold a memory address is known as a(n) _____ String.

a. vacant

b. empty

c. null

d. alias

10.

The actual length of the _____ is the capacity of the StringBuilder object.

a. buffer

b. string

c. thread

d. variable name

11.

If String movie = new String("West Side Story");, the value of movie.indexOf(s) is _____.

a. 2

b. false

c. true

d. 3

12.

The String class replace() method replaces _____.

a. one String with another String

b. a String with a character

c. every occurrence of a character in a String with another character

d. one character in a String with another character

13.

The toString() method converts a(n) _____ to a String.

a. all of the above

b. float

c. int

d. char

14.

Joining Strings with a '+' is called _____.

a. linking

b. concatenation

c. chaining

d. parsing

15.

The first position in a String _____.

a. is position zero

b. must be alphabetic

c. must be uppercase

d. is ignored by the compareTo() method

16.

The method that extracts a string from within another string is _____.

a. substring()

b. extract()

c. append()

d. parseString()

17.

The method parseInt() converts a(n) _____.

a. integer to a Double

b. Double to a String

c. String to an integer

d. integer to a String

18.

The difference between int and Integer is _____.

a. nonexistent; both are primitive types

b. int is a primitive type; Integer is a class

c. int is a class; Integer is a primitive type

d. nonexistent; both are classes

19.

For an alternative to the String class, and so you can change a String's contents, you can use _____.

a. StringMerger

b. StringHolder

c. char

d. StringBuilder

20.

Unlike when you create a String, when you create a StringBuilder, you must use the keyword _____.

a. null

b. class

c. buffer

d. new