java who to read input code example

Example 1: java get input

Scanner sc = new Scanner(System.in);
String s = sc.next();
int n = sc.nextInt();
double d = sc.nextDouble();
float f = sc.nextFloat();

// more fast way
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String s = br.readLine(); // read line
int c = br.read();        // read single char

Example 2: read input in java

3 ways to read input from console in java
-----------------------------

1. Using BufferedReader Class
2. Using Scanner Class
3. Using Console Class 

//bufferedreader class

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
...
public static void main(String[] args) throws IOException
...
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String name = reader.readLine();

//Scanner class

import java.util.Scanner;
...

String name = new Scanner(System.in);

//Console class:

String name = Syste.console().readLine();