Java ☕ User Input

YouTube Excerpt: The earliest computers used punch cards to tell the computer what kind of program to run. Nowadays, we don't use punch-card computer input anymore. In this lesson we will learn how to take input from a user using the keyboard. The Jacquard Loom Machine was one of the earliest computers to use punch-card input The Scanner The way to take user input in Java is the Scanner class. The very first thing we need to do is import the scanner class. import java.util.Scanner; To use the scanner class, we must create a scanner object. In this example, I've named the object 'myScanner'. Scanner myScanner = new Scanner(System.in); Next, let's print a prompt to the console. System.out.println("What is your name?"); We'll store the user's input in a variable called 'response'. To get input, we can call the nextLine() method. String name = myScanner.nextLine(); To finish things off, we can use the name variable to personalize our response. System.out.print.ln("Hello, " + name + ". It's good to meet you!"); If you did everything correctly, your console should look something like this after running the program. What is your name? Robert Hello, Robert. It's good to meet you! Java Course: https://apmonitor.github.io/begin_java Course Overview: https://apmonitor.com/che263/index.php/Main/BeginJava Source Code: https://github.com/APMonitor/begin_java Temperature Control Lab: https://apmonitor.com/heat.htm

The earliest computers used punch cards to tell the computer what kind of program to run. Nowadays, we don't use punch-card computer input anymore....

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