Keyboard Input

import java.util.Scanner;

public class ForgetfulMachine
{
    public static void main( String[] args )
    {
        Scanner keyboard = new Scanner(System.in);

        System.out.println("Give me a word!");
        keyboard.next();
        System.out.println("Give me a second word!");
        keyboard.next();
        System.out.println("\nGreat, now your favorite number?");
        keyboard.nextInt();
        System.out.println("And your second-favorite numbber...");
        keyboard.nextInt();

        System.out.println("\nWhew! Wasn't that fun?");
    }
}

import java.util.Scanner;

public class NameAgeAndSalary
{
    public static void main( String[] args )
    {
        Scanner keyboard = new Scanner(System.in);

        String name;
        int age;
        double salary;

        System.out.println("Hello. What is your name?");
        name = keyboard.next();

        System.out.println("\nHi, " + name + "! How old are you?");
        age = keyboard.nextInt();

        System.out.println("\nSo you're " + age + ", eh? That's not old at all!");
        System.out.println("How much do you make, " + name + "?");
        salary = keyboard.nextDouble();

        System.out.println("\n" + salary + "! I hope that's per hour and not per year! LOL!");
    }
}

import java.util.Scanner;

public class MoreUserInputOfData
{
    public static void main( String[] args )
    {
        Scanner keyboard = new Scanner(System.in);

        String firstName, lastName, login, studentID;
        int grade;
        double gpa;

        System.out.println("Please enter the following information so I can sell it for a profit!\n");

        System.out.print("First name: ");
        firstName = keyboard.next();
        System.out.print("Last name: ");
        lastName = keyboard.next();
        System.out.print("Grade (9-12): ");
        grade = keyboard.nextInt();
        System.out.print("Student ID: ");
        studentID = keyboard.next();
        System.out.print("Login: ");
        login = keyboard.next();
        System.out.print("GPA (0.0-4.0): ");
        gpa = keyboard.nextDouble();

        System.out.println("\nYour information:");
        System.out.println("\tLogin:  "+login);
        System.out.println("\tID:     "+studentID);
        System.out.println("\tName:   "+lastName+", "+firstName);
        System.out.println("\tGPA:    "+gpa);
        System.out.println("\tGrade:  "+grade);
    }
}

import java.util.Scanner;

public class AgeIn5
{
    public static void main( String[] args )
    {
        Scanner keyboard = new Scanner(System.in);

        String name;
        int age;

        System.out.print("Hello. What is your name? ");
        name = keyboard.next();

        System.out.print("\nHi, " + name + "! How old are you? ");
        age = keyboard.nextInt();

        System.out.println("\nDid you know that in five years you will be " + (age + 5) + " years old?");
        System.out.println("And five years ago you were " + (age - 5) + "! Imagine that!");
    }
}

import java.util.Scanner;

public class DumbCalculator
{
    public static void main( String[] args )
    {
        Scanner keyboard = new Scanner(System.in);

        double firstNumber, secondNumber, thirdNumber, results;

        System.out.print("What is your first number? ");
        firstNumber = keyboard.nextDouble();
        System.out.print("What is your second number? ");
        secondNumber = keyboard.nextDouble();
        System.out.print("What is your third number? ");
        thirdNumber = keyboard.nextDouble();

        results = (firstNumber + secondNumber + thirdNumber) / 2;

        System.out.println("\n( " + firstNumber + " + " + secondNumber + " + " + thirdNumber + " ) / 2 is... " + results);
    }
}

import java.util.Scanner;

public class BMICalc
{
    public static void main( String[] args )
    {
        Scanner keyboard = new Scanner(System.in);

        double height, weight, bmi;

        System.out.print("Your height in m: ");
        height = keyboard.nextDouble();
        System.out.print("Your weight in kg: ");
        weight = keyboard.nextDouble();

        bmi = weight / Math.pow(height, 2);

        System.out.printf("\nYour BMI is %.5f", bmi);
    }
}