When you call one of the Scanner class's methods to read a primitive value, such as nextInt or nextDouble, and then call the nextLine method to read a string, an annoying and hard-to-find problem can occur.

Question

Quizplus · Accepted Answer

This problem occurs because nextInt(), nextDouble(), and similar Scanner methods do not consume the newline character (
) from the input. Therefore, when nextLine() is subsequently called, it reads the remainder of the line that contains the newline character, often resulting in reading an empty string if there's no other input before the newline.

When You Call One of the Scanner Class's Methods to Read