[Java] Input by Scanner

Input by Scanner

- The Java Scanner class breaks the input into tokens using a delimiter that is whitespace by default.

- It provides many methods to read and parse various primitive values

- Java Scanner class is widely used to parse text for string and primitive types using regular expression

1. To get input from console

public class Scan { public static void main(String[]args){ Scanner sc = new Scanner(System.in); System.out.println("Name"); String name = sc.next(); System.out.println("No"); int no = sc.nextInt(); System.out.println(name +""+no); sc.close(); } }

2. With delimiter

public class Scan { public static void main(String[]args){ String input = "hello world 10"; Scanner s = new Scanner(input).useDelimiter("\\s"); System.out.println(s.next()); System.out.println(s.next()); System.out.println(s.nextInt()); s.close(); } }