Restore

Labs/Lab5/Lab5_2230026071/Question3/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER">
+		<attributes>
+			<attribute name="module" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

Labs/Lab5/Lab5_2230026071/Question3/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Question3</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

Labs/Lab5/Lab5_2230026071/Question3/.settings/org.eclipse.core.resources.prefs

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+eclipse.preferences.version=1
+encoding/<project>=UTF-8

Labs/Lab5/Lab5_2230026071/Question3/src/Cat.java

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+
+public class Cat {
+	//instance variables
+	private String name;
+	private double weight;
+	
+	//constructor
+	public Cat (String name, double weight) {
+		this.name = name;
+		this.weight = weight;
+	}
+	
+	//methods
+	public String getName() {return this.name;}
+	
+	public double getWeight() {return this.weight;}
+	
+	public void feed() {++this.weight;}
+	
+	//test
+	public static void testCat() {
+		Cat c = new Cat("Meow", 2.0);
+		System.out.println(c.getName() == "Meow");
+		System.out.println(c.getWeight() == 2.0);
+		c.feed();
+		// The name is still the same but the weight increased by 1.0:
+		System.out.println(c.getName() == "Meow");
+		System.out.println(c.getWeight() == 3.0);
+		}
+}

Labs/Lab5/Lab5_2230026071/Question3/src/Dog.java

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+
+public class Dog {
+	//instance variables
+	private String name;
+	private double weight;
+	
+	//constructor
+	public Dog (String name, double weight) {
+		this.name = name;
+		this.weight = weight;
+	}
+	
+	//methods
+	public String getName() {return this.name;}
+	
+	public double getWeight() {return this.weight;}
+	
+	public void feed() {this.weight += 2.0;}
+	
+	//test
+	public static void testDog() {
+		Dog d = new Dog("Woof", 2.0);
+		System.out.println(d.getName() == "Woof");
+		System.out.println(d.getWeight() == 2.0);
+		d.feed();
+		// The name is still the same but the weight increased by 2.0:
+		System.out.println(d.getName() == "Woof");
+		System.out.println(d.getWeight() == 4.0);
+		}
+
+}

Labs/Lab5/Lab5_2230026071/Question3/src/Start.java

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+
+public class Start {
+
+	public static void main(String[] args) {
+		// Unit tests
+		Cat.testCat();
+		Dog.testDog();
+		Student.testStudent();
+		// System tests, to test both classes together.
+		Cat c = new Cat("Meow", 2.0);
+		Student s = new Student("Philippe", c);
+		System.out.println(s.getPet().getName() == "Meow");
+		System.out.println(s.getPet().getWeight() == 2.0);
+		// Feeding the student's pet cat:
+		s.getPet().feed();
+		System.out.println(s.getPet().getName() == "Meow");
+		System.out.println(s.getPet().getWeight() == 3.0);
+		}
+
+}

Labs/Lab5/Lab5_2230026071/Question3/src/Student.java

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+
+public class Student {
+	//instance variables
+	private String name;
+	private Cat pet;
+	
+	//constructor
+	public Student(String name, Cat pet) {
+		this.name = name;
+		this.pet = pet;
+	}
+	
+	//methods
+	public String getName() {return this.name;}
+	
+	public Cat getPet() {return this.pet;}
+	
+	//test
+	public static void testStudent() {
+		Cat c = new Cat("Meow", 2.0);
+		Student s = new Student("Philippe", c);
+		System.out.println(s.getName() == "Philippe");
+		System.out.println(s.getPet() == c);
+		}
+
+}