How to get the user input in Java?

One of the simplest ways is to use a Scanner object as follows:

import java.util.Scanner;Scanner reader = new Scanner(System.in);  // Reading from System.inSystem.out.println("Enter a number: ");int n = reader.nextInt(); // Scans the next token of the input as an int.//once finishedreader.close();

You can use any of the following options based on the requirements.

Scanner class

import java.util.Scanner; //...Scanner scan = new Scanner(System.in);String s = scan.next();int i = scan.nextInt();

BufferedReader and InputStreamReader classes

import java.io.BufferedReader;import java.io.InputStreamReader;//...BufferedReader br = new BufferedReader(new InputStreamReader(System.in));String s = br.readLine();int i = Integer.parseInt(s);

DataInputStream class

import java.io.DataInputStream;//...DataInputStream dis = new DataInputStream(System.in);int i = dis.readInt();

The readLine method from the DataInputStream class has been deprecated. To get String value, you should use the previous solution with BufferedReader

Console class

import java.io.Console;//...Console console = System.console();String s = console.readLine();int i = Integer.parseInt(console.readLine());

Apparently, this method does not work well in some IDEs.

You can use the Scanner class or the Console class

Console console = System.console();String input = console.readLine("Enter input:");