feature: java-poo3-heritage

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 +21,44 @@ public boolean isFlying() {
     public String sing() {
         return "Screech!";
     }
+
+    @Override
+    public void takeOff() {
+        if (!this.flying && this.altitude == 0) {
+            this.flying = true;
+            System.out.printf("%s takes off in the sky.%n", this.getName());
+        }
+    }
+
+    @Override
+    public void ascend(int meters) {
+        if (this.flying && meters > 0) {
+            this.altitude = Math.min(this.altitude + meters, 325);
+            System.out.printf("%s flies upward, altitude : %d%n", this.getName(), this.altitude);
+        }
+    }
+
+    @Override
+    public void glide() {
+        if (this.flying && this.altitude > 0) {
+            System.out.printf("%s glides into the air.%n", this.getName());
+        }
+    }
+
+    @Override
+    public void descend(int meters) {
+        if (this.flying && meters > 0) {
+            this.altitude = Math.max(this.altitude - meters, 1);
+            System.out.println(this.getName() + " flies downward, altitude : " + this.altitude);
+        }
+    }
+
+    @Override
+    public void land () {
+        if (this.flying && this.altitude == 1) {
+            System.out.println(this.getName() + " lands on the ground.");
+        } else {
+            System.out.println(this.getName() + " is too high, it can't land.");
+        }
+    }
 }

Fly.java

@@ -0,0 +1,12 @@
+public interface Fly {
+
+    void takeOff();
+
+    void ascend(int meters);
+
+    void glide();
+
+    void descend(int meters);
+
+    void land();
+}

Nature.java

@@ -12,8 +12,6 @@ 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 +20,5 @@ public static void main(String[] args) {
         hawkeye.land();
         hawkeye.descend(9);
         hawkeye.land();
-        */
     }
 }

out/production/quest-java-oop3/.gitignore

@@ -0,0 +1,31 @@
+# Created by https://www.gitignore.io/api/java
+
+.idea
+
+### Java ###
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+
+# End of https://www.gitignore.io/api/java

out/production/quest-java-oop3/quest-java-oop3.iml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+  <component name="SonarLintModuleSettings">
+    <option name="uniqueId" value="55b38f44-3562-412e-8d68-f6861e1ec0b4" />
+  </component>
+</module>

quest-java-oop3.iml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+  <component name="SonarLintModuleSettings">
+    <option name="uniqueId" value="55b38f44-3562-412e-8d68-f6861e1ec0b4" />
+  </component>
+</module>