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[Lab_01] Added First Lab with Clocks (#1)
* [Lab_01] Added Increase, change time with tests, Readme * Added getters, setters and test for it
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‎README.md

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# java-network-apps
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Course Development Methods for Java Network Applications, spring 2021
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# Development Methods for Java Network Applications. Spring. 2021
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This repository stores laboratory works of Development Methods for Java Network Applications course of spring 2021
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*Language*: Java
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*Tools*: Maven
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### Themes of labs:
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1. lab_01 - *First steps in Java. Easy classes Clock and AdvancedClock*
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© Copyright Sidorova Alexandra, 2021

‎lab_01/lab_01.iml

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<?xml version="1.0" encoding="UTF-8"?>
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<module type="JAVA_MODULE" version="15" />

‎lab_01/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>lab_01.com</groupId>
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<artifactId>lab_01</artifactId>
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<version>1.0-SNAPSHOT</version>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.8.1</version>
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<configuration>
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<source>15</source>
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<target>15</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

‎lab_01/src/main/java/lab_01/Clock.java

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package lab_01;
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import java.io.IOException;
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public class Clock {
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protected String type;
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protected String brand;
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protected Integer cost;
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protected Integer hours, minutes;
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public Clock(String brand, Integer cost, Integer hours, Integer minutes) throws Exception {
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this.type = "Common";
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this.brand = brand;
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this.cost = cost;
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setHours(hours);
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setMinutes(minutes);
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}
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protected void checkValue(Integer value) throws Exception {
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if (value < 0)
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throw new Exception("Value must be not negative!");
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}
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public void setBrand(String brand) {
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this.brand = brand;
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}
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public void setCost(Integer cost) {
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this.cost = cost;
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}
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public void setHours(Integer hours) throws Exception {
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try {
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checkValue(hours);
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this.hours = hours % 24;
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} catch (IOException e) {
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System.out.println(e.getMessage());
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}
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}
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public void setMinutes(Integer minutes) throws Exception {
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try {
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checkValue(minutes);
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setHours(this.hours + minutes / 60);
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this.minutes = minutes % 60;
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} catch (IOException e) {
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System.out.println(e.getMessage());
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}
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}
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public Integer getHours() {
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return this.hours;
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}
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public Integer getMinutes() {
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return this.minutes;
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}
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public String getBrand() {
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return this.brand;
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}
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public Integer getCost() {
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return this.cost;
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}
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public void increaseTime(Integer value) throws Exception {
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try {
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checkValue(value);
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setMinutes((this.minutes + value));
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} catch (IOException e) {
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System.out.println(e.getMessage());
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}
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}
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public void printInformation() {
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System.out.println("\tClock type: " + this.type + "\n\tBrand: " + this.brand +"\n\tCost: " + this.cost);
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printTime();
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}
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public void printTime() {
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System.out.println("\tTime: " + this.hours + "h. " + this.minutes + "m.");
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}
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public static class AdvancedClock extends Clock {
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private Integer seconds;
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public AdvancedClock(String brand, Integer cost, Integer hours, Integer minutes, Integer seconds) throws Exception {
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super(brand, cost, hours, minutes);
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this.type = "Advanced";
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setSeconds(seconds);
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}
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public void setSeconds(Integer seconds) throws Exception {
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try {
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checkValue(seconds);
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setMinutes(this.minutes + seconds / 60);
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this.seconds = seconds % 60;
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} catch (IOException e) {
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System.out.println(e.getMessage());
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}
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}
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public Integer getSeconds() {
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return this.seconds;
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}
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@Override
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public void increaseTime(Integer value) throws Exception {
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try {
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checkValue(value);
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setSeconds((this.seconds + value));
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} catch (IOException e) {
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System.out.println(e.getMessage());
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}
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}
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@Override
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public void printTime() {
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System.out.println("\tAdvanced Time: " + this.hours + "h. " + this.minutes + "m. " + this.seconds + "s. ");
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}
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}
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}

‎lab_01/src/main/java/lab_01/Main.java

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package lab_01;
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import java.io.IOException;
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import java.util.Scanner;
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public class Main {
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public static void main(String[] argv) throws Exception {
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System.out.println("======== CLOCKS ========");
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try {
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System.out.println("\n###TEST_1 <Set start time>");
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test_start_time();
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} catch (IOException e) {
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System.out.println(e.getMessage());
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}
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try {
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System.out.println("\n###TEST_2 <Change time>");
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test_change_time();
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} catch (IOException e) {
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System.out.println(e.getMessage());
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}
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try {
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System.out.println("\n###TEST_3 <Increase time>");
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test_increase_time();
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} catch (IOException e) {
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System.out.println(e.getMessage());
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}
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try {
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System.out.println("\n###TEST_4 <Getters and Setters>");
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test_getters_and_setters();
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} catch (IOException e) {
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System.out.println(e.getMessage());
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}
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}
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public static void test_start_time() throws Exception {
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Clock clock = new Clock("common", 100, 0, 0);
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System.out.println("1. Information:");
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clock.printInformation();
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Clock.AdvancedClock advancedClock = new Clock.AdvancedClock("casio", 2000, 0, 0, 0);
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System.out.println("2. Information:");
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advancedClock.printInformation();
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}
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public static void test_change_time() throws Exception {
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Clock.AdvancedClock advancedClock = new Clock.AdvancedClock("casio", 2000, 0, 0, 0);
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System.out.println("Information:");
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advancedClock.printInformation();
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System.out.println("Set 2 112 528 seconds:");
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advancedClock.setSeconds(2112528);
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advancedClock.printInformation();
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}
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public static void test_increase_time() throws Exception {
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Clock.AdvancedClock advancedClock = new Clock.AdvancedClock("overwatch", 15000, 22, 58, 58);
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System.out.println("Information:");
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advancedClock.printInformation();
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System.out.println("Add 1 second:");
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advancedClock.increaseTime(1);
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advancedClock.printInformation();
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System.out.println("Add 120 seconds:");
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advancedClock.increaseTime(120);
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advancedClock.printInformation();
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System.out.println("Add 120 seconds:");
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advancedClock.increaseTime(120);
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advancedClock.printInformation();
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}
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public static void test_getters_and_setters() throws Exception {
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Clock.AdvancedClock advancedClock = new Clock.AdvancedClock("", 0, 0, 0, 0);
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System.out.println("Information:");
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advancedClock.printInformation();
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Scanner scanner = new Scanner(System.in);
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System.out.println("Set brand: ");
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String brand = scanner.nextLine();
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advancedClock.setBrand(brand);
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System.out.println("Get brand: " + advancedClock.getBrand() + "\n");
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System.out.println("Set cost: ");
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int cost = scanner.nextInt();
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advancedClock.setCost(cost);
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System.out.println("Get cost: " + advancedClock.getCost() + "\n");
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System.out.println("Set hours: ");
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int hours = scanner.nextInt();
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advancedClock.setHours(hours);
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System.out.println("Get hours: " + advancedClock.getHours() + "\n");
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System.out.println("Set minutes: ");
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int minutes = scanner.nextInt();
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advancedClock.setMinutes(minutes);
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System.out.println("Get minutes: " + advancedClock.getMinutes() + "\n");
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System.out.println("Set seconds: ");
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int seconds = scanner.nextInt();
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advancedClock.setSeconds(seconds);
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System.out.println("Get seconds: " + advancedClock.getSeconds() + "\n");
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System.out.println("New information:");
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advancedClock.printInformation();
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}
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}

‎lab_01/target/classes/lab_01/Clock$AdvancedClock.class

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‎lab_01/target/classes/lab_01/Clock.class

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‎lab_01/target/classes/lab_01/Main.class

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