From 1c57e4d8a79805108c9a1dcbe6cd02dbdfbed0d9 Mon Sep 17 00:00:00 2001 From: Rob Hallam <0504004h@student.gla.ac.uk> Date: Tue, 19 Sep 2023 14:30:20 +0100 Subject: [PATCH] Finish up to end of Lab 4 Skips labs 1-3, did them in eclipse which failed to save to OneDrive (!) Implements Lab and Section classes for more easily and consistently running particular labs. --- week1.java | 208 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 208 insertions(+) create mode 100644 week1.java diff --git a/week1.java b/week1.java new file mode 100644 index 0000000..5cbb029 --- /dev/null +++ b/week1.java @@ -0,0 +1,208 @@ +import java.util.Calendar; +import java.util.concurrent.ThreadLocalRandom; + +class runLabs { + public static void main(String[] args) { + new Lab4(); + new Lab5(); + } +} + +class Section { + private int _sectionNumber; + + public Section(int s) { + this._sectionNumber = s; + } + + public int getSection() { + return _sectionNumber; + } +} + +class Lab { + + private int _labNumber; + public Section currentSection; + + public Section getCurrentSection() { + return currentSection; + } + + public void setCurrentSection(Section currentSection) { + this.currentSection = currentSection; + } + + public static void printSection(String section) { + String title = String.format("Starting section %s", section); + + System.out.println("-".repeat(title.length())); + System.out.println(String.format("%s", title)); + System.out.println("-".repeat(title.length())); + } + + public Lab(int lN) { + String title = String.format("|Starting Lab %s|", lN); + this._labNumber = lN; + + System.out.println("*".repeat(title.length())); + System.out.println(title); + System.out.println("*".repeat(title.length())); + } + + public int getLabNumber() { + return this._labNumber; + } +} + +class Lab4 extends Lab { + public Lab4() { + super(4); + ex44(); + ex46(); + } + + // public static void main(String[] args) { + // } + + public static void ex41() { + String labSection = "4.1"; + // System.out.println(String.format("Starting section %s", labSection)); + printSection(labSection); + + int testYear1 = 1996; // true + int testYear2 = 1997; // false + int testYear3 = 2000; // true + int testYear4 = 9332; // true + int testYear5 = 1900; // false + + int randomYear = ThreadLocalRandom.current().nextInt(1, 9999 + 1); + + System.out.println(String.format("Testing %s", testYear1)); + System.out.println(String.format("%s", isLeap(testYear1))); + + System.out.println(String.format("Testing %s", testYear2)); + System.out.println(String.format("%s", isLeap(testYear2))); + + System.out.println(String.format("Testing %s", testYear3)); + System.out.println(String.format("%s", isLeap(testYear3))); + + System.out.println(String.format("Testing %s", testYear4)); + System.out.println(String.format("%s", isLeap(testYear4))); + + System.out.println(String.format("Testing %s", randomYear)); + System.out.println(String.format("%s", isLeap(randomYear))); + + System.out.println(String.format("Testing %s", testYear5)); + } + + public static void ex44() { + String labSection = "4.4"; + printSection(labSection); + + // System.out.println("------------------------"); + // System.out.println("Starting lab section " + labSection); + // System.out.println("------------------------"); + + String month1 = "oct"; + int year1 = 2000; + System.out.println(String.format("Month: %s\tYear: %d\tDays in month: %d", + month1, year1, monthLen(month1, year1))); + + String month2 = "feb"; + int year2 = 2000; + System.out.println(String.format("Month: %s\tYear: %d\tDays in month: %d", + month2, year2, monthLen(month2, year2))); + + String month3 = "feb"; + int year3 = 1997; + System.out.println(String.format("Month: %s\tYear: %d\tDays in month: %d", + month3, year3, monthLen(month3, year3))); + + String month4 = "apr"; + int year4 = 2001; + System.out.println(String.format("Month: %s\tYear: %d\tDays in month: %d", + month4, year4, monthLen(month4, year4))); + + } + + /** + * Lab section 4.5 + * + * Write a program that can calculate how many whole years old someone is from + * today’s date and their date of birth. You could store each date as three + * integers (day, + * month, year) + */ + public static void ex46() { + String labSection = "4.6"; + printSection(labSection); + // calculate whole years' old to date + + Calendar today = Calendar.getInstance(); + System.out.println("Today:\t" + today.getTime()); + + Calendar dob1 = Calendar.getInstance(); + dob1.set(1990, 1, 1); + + System.out.println(String.format( + "DOB 1:\t%s (difference:\t%d years)", + dob1.getTime(), + yearDifference(today, dob1))); + + Calendar dob2 = Calendar.getInstance(); + dob2.set(1994, 12, 22); + + System.out.println(String.format( + "DOB 2:\t%s (difference:\t%d years)", + dob2.getTime(), + yearDifference(today, dob2))); + } + + public static boolean isLeap(int year) { + if (year % 4 != 0) { + return false; + } else { + if (year % 100 == 0) { + if (year % 400 == 0) { + return true; + } else { + return false; + } + } + return true; + } + } + + public static int monthLen(String month, int year) { + if (month == "feb") { + if (isLeap(year)) { + return 29; + } else { + return 28; + } + } else if ( + (month == "apr") || + (month == "jun") || + (month == "sep") || + (month == "nov")) { + return 30; + } else { + return 31; + } + } + + public static int yearDifference(Calendar date1, Calendar date2) + { + return (int) Math.abs(date1.get(Calendar.YEAR) - + date2.get(Calendar.YEAR) + ); + } +} + +class Lab5 extends Lab { + public Lab5() { + super(5); + System.out.println(String.format("hi")); + } +}