MCQEasy1 mark
1
Choose the correct answers to the questions from the given options. (Do not copy the questions, write only the correct answers.)
Which of the following converts "25" to 25.0?
Topic: Wrapper class conversion methods
Previous-year question practice database
Try it
Pick an option and check your answer. The full worked answer is below either way.
Answer
Exam answer
(c) Double.parseDouble("25").
Explanation
Java is case-sensitive and the method name is exactly parseDouble, so (a) fails on capitalisation and (b) is not a real method. (d) passes an int where a String is required. Only (c) is correct. The family to learn is Integer.parseInt(), Double.parseDouble(), Long.parseLong() — each takes a String and returns the matching primitive.
In words
Double.parseDouble("25").
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