Console Input

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ConsoleInput1.java

/******************************************************************************
 * This program demonstrates how to prompt the user for input.
 * 
 * Copyright © 2020 Richard Lesh.  All rights reserved.
 *****************************************************************************/

import org.pureprogrammer.Utils;

public class ConsoleInput1 {

	public static void main(String[] args) {
		String name;
		name = Utils.prompt("What is your name? ");
		String favoriteColor;
		favoriteColor = Utils.prompt("What is your favorite color? ");
		System.out.println(Utils.format("Hello, {0:s}!  I like {1:s} too!", name, favoriteColor));
	}
}

ConsoleInput2.java

/******************************************************************************
 * This program demonstrates how to prompt the user for input.
 * 
 * Copyright © 2020 Richard Lesh.  All rights reserved.
 *****************************************************************************/

import org.pureprogrammer.Utils;

public class ConsoleInput2 {

	public static void main(String[] args) {
		try {
			int favoriteInt;
			long favoriteLong;
			double favoriteDouble;
			String favoriteIntInput;
			favoriteIntInput = Utils.prompt("What is your favorite small integer? ");
			favoriteInt = Integer.parseInt(favoriteIntInput);
			String favoriteLongInput;
			favoriteLongInput = Utils.prompt("What is your favorite large integer? ");
			favoriteLong = Long.parseLong(favoriteLongInput);
			String favoriteDoubleInput;
			favoriteDoubleInput = Utils.prompt("What is your favorite floating point? ");
			favoriteDouble = Double.parseDouble(favoriteDoubleInput);
			final double sum = favoriteInt + favoriteLong + favoriteDouble;
			System.out.println(Utils.format("All together they add up to {0:f}!", sum));
		} catch (NumberFormatException ex) {
			System.out.println("Bad input! " + Utils.exceptionMessage(ex));
		} catch (Exception ex) {
			System.out.println("Don't know what went wrong!");
		}
	}
}

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References

• [[Java Language Specification]], Java SE 17 Edition, Gosling, et. al., 2021.
• [[Java Tutorials]]
• [[Java at TutorialsPoint]]
• Download Java at [[Amazon Corretto]], [[Azul Zulu]], [[Eclipse Temurin]] or [[Oracle JDK]]