Learn Java Tutorial for Beginners, Part 11: Taking User Input (by Scanner)

The Java Scanner class breaks the input into tokens using a delimiter which is whitespace by default. It provides many methods to read and parse various primitive values.
The Java Scanner class is widely used to parse text for strings and primitive types using a regular expression. It is the simplest way to get input in Java. By the help of Scanner in Java, we can get input from the user in primitive types such as int, long, double, byte, float, short, etc.
The Java Scanner class extends Object class and implements Iterator and Closeable interfaces.
The Java Scanner class provides nextXXX() methods to return the type of value such as nextInt(), nextByte(), nextShort(), next(), nextLine(), nextDouble(), nextFloat(), nextBoolean(), etc. To get a single character from the scanner, you can call next().charAt(0) method which returns a single character.

To get the instance of Java Scanner which parses the strings, we need to pass the strings in the constructor of Scanner class. For Example:
Scanner in = new Scanner("Hello Shattak");

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