Added lf files to of5_1

foreksempel/src/main/java/of5_1/lf/Animal.java

+package of5_1.lf;
+
+public interface Animal {
+    
+    String getName();
+
+    int getAge();
+
+    String makeSound();
+
+}
+

foreksempel/src/main/java/of5_1/lf/AnimalAgeComparator.java

+package of5_1.lf;
+
+import java.util.Comparator;
+
+public class AnimalAgeComparator implements Comparator<Animal> {
+
+    @Override
+    public int compare(Animal a1, Animal a2) {
+        return a1.getAge()-a2.getAge();
+    }
+
+}
\ No newline at end of file

foreksempel/src/main/java/of5_1/lf/AnimalTypeComparator.java

+package of5_1.lf;
+
+import java.util.Comparator;
+
+public class AnimalTypeComparator implements Comparator<Animal>{
+
+    @Override
+    public int compare(Animal a1, Animal a2) {
+        if (a1 instanceof Dog){
+            if (a2 instanceof Dog){
+                return 0;
+            }
+            return -1;
+        }
+        return 1;
+    }
+    
+}
\ No newline at end of file

foreksempel/src/main/java/of5_1/lf/Chicken.java

+package of5_1.lf;
+
+public class Chicken implements Animal{
+    private int age;
+    private String name;
+
+    public Chicken(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+
+    @Override
+    public String getName() {
+        return name;
+    }
+
+    @Override
+    public int getAge() {
+    return age;
+    
+    }
+
+    @Override
+    public String makeSound() {
+        return name + " sier klukk!";
+    }
+
+    
+}
\ No newline at end of file

foreksempel/src/main/java/of5_1/lf/Dog.java

+package of5_1.lf;
+
+public class Dog implements Animal {
+    
+    private int age;
+    private String name;
+
+    public Dog(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+
+    @Override
+    public String getName() {
+        return name;
+    }
+
+    @Override
+    public int getAge() {
+    return age;
+    
+    }
+
+    @Override
+    public String makeSound() {
+        return name + " sier bjeff!";
+    }
+
+    
+}