Java Strings and Math Quiz

What is a String variable in Java?

• A collection of integers

• A collection of characters surrounded by single quotes

• A collection of characters surrounded by double quotes

• A collection of boolean values

Which method is used to find the length of a String in Java?

• count()

• getLength()

• size()

• length()

What does the indexOf() method return?

• The entire string

• The length of the string

• The index of the first occurrence of specified text

• The last occurrence of a character

What operator is used for String concatenation in Java?

• &

• +

• *

• %

What will be the result of adding two Strings in Java?

• A number

• An error

• A boolean

• A String concatenation

What escape character is used to insert a double quote in a String?

• !

• /

• "

• \

What does the Math.max(X, Y) method do?

• Returns the sum of X and Y

• Returns the average of X and Y

• Returns the highest value of X and Y

• Returns the minimum value of X and Y

What does the Math.sqrt(X) method return?

• The square of X

• The cube of X

• The square root of X

• The absolute value of X

What does the Math.random() method return?

• A random boolean value

• A random integer

• A random number between 0.0 and 1.0

• A random number between 1 and 100

What data type can only have one of two values in Java?

• Character

• Integer

• String

• Boolean