java how to read input code example

Example 1: how to take input in java

Scanner sc = new Scanner(System.in);  // Create a Scanner object
String userName = sc.nextLine();//read input string
int age = sc.nextInt(); //read input integer
long mobileNo = sc.nextLong(); //read input long
double cgpa = sc.nextDouble(); //read input double
System.out.println(userName);//output

Example 2: how to get user input in java

import java.util.*;  
class UserInputDemo   
{  
public static void main(String[] args)  
{  
Scanner sc= new Scanner(System.in);    //System.in is a standard input stream  
System.out.print("Enter first number- ");  
int a= sc.nextInt();  
System.out.print("Enter second number- ");  
int b= sc.nextInt();  
System.out.print("Enter third number- ");  
int c= sc.nextInt();  
int d=a+b+c;  
System.out.println("Total= " +d);  
}  
}

Example 3: 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();