fly interface added + Eagle implemented with it

Eagle.java

@@ -1,4 +1,4 @@
-public class Eagle extends Bird {
+public class Eagle extends Bird implements Fly {
 
     private boolean flying;
     private int altitude;
@@ -21,4 +21,45 @@ public boolean isFlying() {
     public String sing() {
         return "Screech!";
     }
+
+    @Override
+    public void takeOff() {
+        if (!this.flying) {
+            this.flying = true;
+            System.out.println(this.getName() + "has successfully take off and is now flying");
+        }
+
+    }
+
+    @Override
+    public void land() {
+        if (this.flying && (this.altitude <= 1)) {
+            this.flying = false;
+            System.out.println(this.getName() + " has land on the floor");
+        }
+    }
+
+    @Override
+    public void ascend(int meters) {
+        if (this.flying) {
+            this.altitude = this.altitude + meters;
+            System.out.println(this.getName() + " is now flying at " + this.altitude);
+        }
+    }
+
+    @Override
+    public void descend(int meters) {
+        if (this.flying) {
+            this.altitude = this.altitude - meters;
+            System.out.println(this.getName() + " is now flying at " + this.altitude);
+        }
+    }
+
+    @Override
+    public void glide() {
+        if (this.flying) {
+            System.out.println("the bird is chilling in the air");
+        }
+    }
+
 }

Fly.java

@@ -0,0 +1,14 @@
+public interface Fly {
+
+    void takeOff();
+
+    void ascend(int meters);
+
+    void descend(int meters);
+
+    void glide();
+
+    void land();
+
+
+}

Nature.java

@@ -12,8 +12,7 @@ public static void main(String[] args) {
         pingou.getOut();
 
         Eagle hawkeye = new Eagle("Hawkeye");
-        // TODO : uncomment the following code in order to test it
-        /*
+
         hawkeye.takeOff();
         hawkeye.ascend(120);
         hawkeye.ascend(30);
@@ -22,6 +21,6 @@ public static void main(String[] args) {
         hawkeye.land();
         hawkeye.descend(9);
         hawkeye.land();
-        */
+
     }
 }