Practice Foreach, Removeif, Replaceall (4.4.2) - Java Collections Framework (Advanced

Practice: forEach, removeIf, replaceAll

Lesson 4.4.2Java Collections Framework (Advanced

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9 questions

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3 cards from this section. Quick, good the night before a test.
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does the 'forEach' method do?
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Think about how we do operations on each item in a list.
Question 2.
How does 'removeIf' work?
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It takes a predicate as an argument.
3Question 3.
What is the purpose of the forEach method?
- A) To remove elements from a collection
- B) To apply an action for each element
- C) To sort a collection
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Think about how you would express an operation on each item.
4Question 4.
True or False: The removeIf method removes elements based on a predicate.
- True
- False
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Recall the definition of removeIf.
Question 5.
Write a single Java method that accepts a List, removes specific unwanted entries based on a condition, and modifies the remaining entries to follow a specified format. Include use of forEach, removeIf, and replaceAll.
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Break down the task into separate method calls.
Question 6.
How can you use functional programming concepts in Java to enhance data manipulation? Provide an example using these methods in a list context.
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Think about simplifying your code using lambdas.

5 more questions in this section. Enroll free to practise them all.