How to Read a Single Character from User Input Using Java's Scanner?

Taking Character Input Using Scanner

To retrieve a character input from the user, we encounter a challenge as nextChar() method does not exist in the Scanner class. Instead, we can utilize various techniques to achieve this.

Method 1: Extract First Character

One approach is to take the first character from Scanner.next():

char c = reader.next().charAt(0);

This method captures the first letter of the input string.

Method 2: Consume Exactly One Character

To retrieve precisely one character, we can employ:

char c = reader.findInLine(".").charAt(0);

This line ensures that only a single character is read.

Method 3: Consume Strictly One Character

For scenarios where we need to consume exactly one character, we can use:

char c = reader.next(".").charAt(0);

This technique enforces that only one character is taken as input, preventing any additional characters from being captured.

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