reader/buffer

package com.example.foo;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Scanner;

public class SomeClass {
  public static void main(final String[] args) throws IOException {
    char i;
    String a;
    final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    try (Scanner sc = new Scanner(System.in)) {
      a = sc.next();// input: 2
      i = (char) br.read(); // input: 2
      System.out.println(i);// output: 2
      System.out.println(a);// output: 2
    }
  }
}