Chapter 8: Using Scanner for User Input with Looping Statements - Programming 1

UNIVERSIDAD DE DAGUPAN ITC02: PROGRAMMING 1 School of Information Technology Education MIDTERMS Chapter 8: Using Scanner for User Input with Looping Statements In Java programming, creatin...

UNIVERSIDAD DE DAGUPAN ITC02: PROGRAMMING 1 School of Information Technology Education MIDTERMS Chapter 8: Using Scanner for User Input with Looping Statements In Java programming, creating interactive applications often involves gathering input from users and using that data to control the flow of the program. The Scanner class in Java provides a simple yet powerful way to collect various types of input, such as integers, strings, and floating-point numbers. When paired with looping structures— like for, while, and do-while loops—Scanner enables us to create dynamic programs that can respond to user input in real-time. Looping is a fundamental programming concept that allows us to execute a block of code repeatedly until a specific condition is met. By combining Scanner with loops, we can prompt users to enter data multiple times, perform repetitive tasks based on user input, and create interactive experiences within our programs. This module introduces how to use Scanner with different loop types in Java to build flexible and interactive programs. You will learn how to collect user input inside loops to perform actions like summing numbers, creating countdowns, and developing guessing games. Through these exercises, you’ll gain a practical understanding of how to control program flow and make your Java applications more engaging and responsive to users. Objective By the end of this module, students will be able to: 1. Use the Scanner class to collect user input in Java. 2. Implement for, while, and do-while loops using user-provided data. 3. Write Java programs that combine loops with Scanner input handling. Prerequisites  Basic understanding of Java programming syntax.  Familiarity with Scanner for reading user input.  Understanding of for, while, and do-while loop structures in Java. 1. Using Scanner with a for Loop The for loop is commonly used when the number of iterations is known. By combining it with Scanner, we can create programs that ask the user to provide input a specific number of times. Example 1: Input and Display Student Scores Objective: Prompt the user to enter scores for 5 students and calculate the average. import java.util.Scanner; public class StudentScores { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); int total = 0; int numberOfStudents = 5; for (int i = 1; i