Added Lab 04 (#9)

* Added lab 04

* updated readme

Author: a-sidorova

README.md

@@ -2,12 +2,14 @@
 This repository stores laboratory works of Development Methods for Java Network Applications course of spring 2021
 
 *Language*: Java
+
 *Tools*: Maven
 
 ### Themes of labs:
 1. lab_01 - *First steps in Java. Easy classes Clock and AdvancedClock*
 2. lab_02 - *GUI and thread*
 3. lab_03 - *Server - clients*
+3. lab_04 - *Database*
 
 
 © Copyright Sidorova Alexandra, 2021

lab_04/alarms.db

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4" />

lab_04/lab_04.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.example</groupId>
+    <artifactId>lab_04</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>15</maven.compiler.source>
+        <maven.compiler.target>15</maven.compiler.target>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.openjfx</groupId>
+            <artifactId>javafx-controls</artifactId>
+            <version>13</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openjfx</groupId>
+            <artifactId>javafx-fxml</artifactId>
+            <version>13</version>
+        </dependency>
+        <dependency>
+            <groupId>com.google.code.gson</groupId>
+            <artifactId>gson</artifactId>
+            <version>2.8.5</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.xerial</groupId>
+            <artifactId>sqlite-jdbc</artifactId>
+            <version>3.34.0</version>
+        </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.0</version>
+                <configuration>
+                    <release>11</release>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.openjfx</groupId>
+                <artifactId>javafx-maven-plugin</artifactId>
+                <version>0.0.3</version>
+                <configuration>
+                    <mainClass>ClientForm</mainClass>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>

lab_04/pom.xml

@@ -0,0 +1,8 @@
+public enum Action {
+    CREATE,
+    DELETE,
+    START,
+    STOP,
+    PAUSE,
+    SET
+}

lab_04/src/main/java/Action.java

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+public class Alarm implements IAlarm {
+    int hours;
+    int minutes;
+
+    protected void checkValue(int value) {
+        if (value < 0)
+            throw new IllegalArgumentException("Value must be not negative!");
+    }
+
+    @Override
+    public void setHours(int hours) {
+        try {
+            checkValue(hours);
+            this.hours = hours % 24;
+        } catch (IllegalArgumentException e) {
+            System.out.println(e.getMessage());
+        }
+    }
+
+    @Override
+    public void setMinutes(int minutes) {
+        try {
+            checkValue(minutes);
+            setHours(this.hours + minutes / 60);
+            this.minutes = minutes % 60;
+        } catch (IllegalArgumentException e) {
+            System.out.println(e.getMessage());
+        }
+    }
+
+    @Override
+    public void setSeconds(int seconds) {
+        throw new IllegalArgumentException("Seconds are not supported!");
+    }
+
+    @Override
+    public int getHours() {
+        return this.hours;
+    }
+
+    @Override
+    public int getMinutes() {
+        return this.minutes;
+    }
+
+    @Override
+    public int getSeconds() {
+        throw new IllegalArgumentException("Seconds are not supported!");
+    }
+
+    @Override
+    public boolean check(IClock clock) {
+        return (this.hours == clock.getHours() && this.minutes == clock.getMinutes());
+    }
+
+    @Override
+    public void printTime() {
+        System.out.println("\tAlarm: " + this.hours + "h. " + this.minutes + "m.");
+    }
+}

lab_04/src/main/java/Alarm.java

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+public class AlarmAdvanced extends Alarm {
+    int seconds;
+
+    @Override
+    public void setSeconds(int seconds) {
+        try {
+            checkValue(seconds);
+            setMinutes(this.minutes + seconds / 60);
+            this.seconds = seconds % 60;
+        } catch (IllegalArgumentException e) {
+            System.out.println(e.getMessage());
+        }
+    }
+
+    @Override
+    public int getSeconds() {
+        return this.seconds;
+    }
+
+    @Override
+    public boolean check(IClock clock) {
+        return (this.hours == clock.getHours() && this.minutes == clock.getMinutes() && this.seconds == clock.getSeconds());
+    }
+
+    @Override
+    public void printTime() {
+        System.out.println("\tAlarm: " + this.hours + "h. " + this.minutes + "m. " + this.seconds + "s.");
+    }
+}