Practice questions on Input by user

import java.util.Scanner;
class Ans{
  public static void main(String[] args){
    Scanner s = new Scanner(System.in);
    int x = s.nextInt();
    int y = s.nextInt();
    System.out.println(x+y);
  }
}

import java.util.Scanner;
class Ans{
  public static void main(String[] args){
    Scanner s = new Scanner(System.in);
    int x = s.nextInt();
    int y = s.nextInt();
    int z = x+y;
    int p = x*y;
    System.out.println("Sum : "+z+"\nProduct : "+p);
  }
}

import java.util.Scanner;
class Ans{
  public static void main(String[] args){
    Scanner s = new Scanner(System.in);
    double x = s.nextDouble();
    double y = s.nextDouble();
    double area = x*y;
    System.out.println((int)area);
  }
}

import java.util.Scanner;
class Ans{
  public static void main(String[] args){
    Scanner s = new Scanner(System.in);
    System.out.println("Enter name");
    String a = s.next();
    System.out.println("Enter roll number");
    int b = s.nextInt();
    System.out.println("Enter Filed of interest");
    s.next();//To consume '\n' left by ENTER KEY, it is not consumed by nextInt()
    String c = s.nextLine();
    System.out.println("Hey, my name is "+a+" and my roll number is "+b+". My field of interest are "+c+".");
  }
}

import java.util.Scanner;
class Ans{
  public static void main(String[] args){
    Scanner s = new Scanner(System.in);
    System.out.println("Enter side");
    int a = s.nextInt();
    System.out.println("Area : "+(a*a)+"\nPerimeter : "+(4*a));
  }
}

import java.util.Scanner;
class Ans{
  public static void main(String[] args){
    Scanner s = new Scanner(System.in);
    System.out.println("Enter first number");
    int a = s.nextInt();
    System.out.println("Enter second number");
    int b = s.nextInt();
    System.out.println("Enter third number");
    int c = s.nextInt();
    System.out.println("All are equal : "+(a==b&&b==c&&c==a));
    System.out.println("Any two are equal : "+(a==b||b==c||c==a));
  }
}