java read from input

import java.util.Scanner; /* Required Import*/ public class reading{ public static void main(String[] args){ Scanner scan = new Scanner(System.in); // Create Reader System.out.print("Enter Your Age"); // Ask the user for something int age = scan.nextInt(); // Read value from user System.out.print(age); // Output the value } } /* Java Reading Options: 1_ reading int => nextInt(); 2_ reading char => next().charAt(0); Single Character 3_ reading string => next(); 4_ reading double => nextDouble(); */

import java.util.Scanner; ... Scanner console = new Scanner(System.in); int num = console.nextInt(); console.nextLine() // to take in the enter after the nextInt() String str = console.nextLine();

//For continues reading a line import java.util.Scanner; Scanner in = new Scanner(System.in); while(in.hasNextLine()) { String line = in.nextLine(); System.out.println("Next line is is: " + line); }

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();

Posted by: Guest on March-01-2021

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