School Activity { IP ]

Author: PP-Namias

LabInput1.java

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+/**
+ * Seconds Converter Activity #1
+ * @author PP-Namias
+ * Licensed under MIT License
+ */
+
+/*
+ * Write a program that accepts input to varible seconds.
+ * The program will then output the equivalent time in hours:minutes:seconds format.
+ * use labInput1 as classname and filename.
+ * 
+ * Test ouput:
+ * Please enter number of seconds: 4870
+ * 4870 seconds = 1:21:10
+ */
+import java.util.Scanner;
+
+public class LabInput1 {
+  public static void main(String[] args) {
+    Scanner input = new Scanner(System.in);
+    int seconds, hours, minutes, secondsRemainder;
+    System.out.print("Please enter number of seconds: ");
+    seconds = input.nextInt();
+    hours = seconds / 3600;
+    minutes = (seconds % 3600) / 60;
+    secondsRemainder = (seconds % 3600) % 60;
+    System.out.println(seconds + " seconds = " + hours + ":" + minutes + ":" + secondsRemainder);
+  }
+}

LabInput2.java

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+/*
+ * Write a program that inputs a three-digit value into variable num
+ * and then display each digit with the correspobding place value. A
+ * sample output is given below. Use LabInput2 as classname and filename 
+ * 
+ * Test output:
+ * Please enter a three-digit integer: 487
+ * The value of num = 487
+ * 4 hundreds 8 tens and 7 ones
+ */
+import java.util.Scanner;
+
+public class LabInput2 {
+  public static void main(String[] args) {
+    Scanner input = new Scanner(System.in);
+    int num, hundreds, tens, ones;
+    System.out.print("Please enter a three-digit integer: ");
+    num = input.nextInt();
+    hundreds = num / 100;
+    tens = (num % 100) / 10;
+    ones = (num % 100) % 10;
+    System.out.println("The value of num = " + num);
+    System.out.println(hundreds + " hundreds " + tens + " tens and " + ones + " ones");
+  }
+}

LabInput4.java

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+/*
+ * Write a program to gauge the amount of inflation over the past year.
+ * The program asks for the itme name (such as notebook or a printer),
+ * price of an item both one yeaar ago and today. 
+ * It estimates the inflation rate as the diffreence in price divided by the last year'sprice. 
+ * Use LabInput4 as classname and filename
+ * 
+ * Test Output:
+ * Please enter he name of the item: netbook
+ * Enter its price last year: 15000
+ * Enter its price this year: 13500
+ * The inflation rate of notebook: -0.1
+ * 
+ * ------------------------------
+ * Please enter he name of the item: chicken
+ * Enter its price last year: 125
+ * Enter its price this year: 150
+ * The inflation rate of notebook: 0.2
+ */
+import java.util.Scanner;
+
+public class LabInput4 {
+  public static void main(String[] args) {
+    Scanner input = new Scanner(System.in);
+    String itemName;
+    double priceLastYear, priceThisYear, inflationRate;
+    System.out.print("Please enter he name of the item: ");
+    itemName = input.nextLine();
+    System.out.print("Enter its price last year: ");
+    priceLastYear = input.nextDouble();
+    System.out.print("Enter its price this year: ");
+    priceThisYear = input.nextDouble();
+    inflationRate = (priceThisYear - priceLastYear) / priceLastYear;
+    System.out.println("The inflation rate of " + itemName + ": " + inflationRate);
+  }
+}