Practice Introduction To Strings (10.4) - Arrays and Strings

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10 questions

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6 sample questions

Question 1.
What is a string in Java?
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Think about how we use strings in everyday coding.
Question 2.
How do you find the length of a string?
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What method do we use for measuring size?
3Question 3.
What does String str = "Hello, World!" represent?
- An integer
- A string
- A boolean
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Remember the definition of a string.
4Question 4.
True or False: Strings in Java can be changed after they are created.
- True
- False
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Think about the properties of objects in Java.
Question 5.
Create a program that takes a string and outputs its length, the first character, and a reversed version of the string.
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How do you extract individual characters for the reversed string?
Question 6.
Write a method that takes a string and a character as inputs and counts how many times the character appears in the string.
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Consider how you can access each character efficiently.

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