Tutorial 5

NTU-OOP-Tuts.iml

@@ -3,6 +3,7 @@
   <component name="NewModuleRootManager" inherit-compiler-output="true">
     <exclude-output />
     <content url="file://$MODULE_DIR$" />
+    <orderEntry type="jdk" jdkName="22" jdkType="JavaSDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T2Q1-1/T2Q1-1.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T2Q1-2/T2Q1-2.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T2Q1-3/T2Q1-3.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T2Q1-4/T2Q1-4.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T2Q1-5/T2Q1-5.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T2Q1-extra1/T2Q1-extra1.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T2Q1-extra2/T2Q1-extra2.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T2Q1-extra3/T2Q1-extra3.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T2Q2/T2Q2.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T3Q1-1/T3Q1-1.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T3Q1-2/T3Q1-2.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T3Q1-3/T3Q1-3.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T3Q1-4/T3Q1-4.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T3Q1-extra1/T3Q1-extra1.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T3Q2-1/T3Q2-1.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T3Q2-2/T3Q2-2.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T3Q2-3/T3Q2-3.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T3Q2-4/T3Q2-4.iml

@@ -5,7 +5,7 @@
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
     </content>
-    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

T5Q1/T5Q1.iml

@@ -0,0 +1,11 @@
+<?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://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T5Q1/src/Main.java

@@ -0,0 +1,11 @@
+public class Main {
+    public static void main(String[] args) {
+        ClassF z = new ClassF();
+
+        z.print(9);
+        z.print(2, "Cx2002");
+        z.print("Object");
+        z.print("OODP", "Java");
+//        z.print("OODP", 2002); // Compilation error
+    }
+}

T5Q2-A-Sol1/T5Q2-A-Sol1.iml

@@ -0,0 +1,11 @@
+<?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://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T5Q2-A-Sol1/src/ClassA.java

@@ -0,0 +1,5 @@
+public class ClassA {
+    public void print(int x, String y) {
+        System.out.println(x + " " + y);
+    }
+}

T5Q2-A-Sol1/src/ClassB.java

@@ -0,0 +1,5 @@
+public class ClassB extends ClassA {
+    public void print(int x) {
+        System.out.println(x);
+    }
+}

T5Q2-A-Sol1/src/ClassC.java

@@ -0,0 +1,3 @@
+public abstract class ClassC extends ClassA {
+    public abstract void print(String x, String y);
+}

T5Q2-A-Sol1/src/ClassD.java

@@ -0,0 +1,5 @@
+public class ClassD extends ClassC {
+    public void print(String a, String b) {
+        System.out.println(a + " " + b);
+    }
+}

T5Q2-A-Sol1/src/ClassE.java

@@ -0,0 +1,8 @@
+public class ClassE extends ClassC {
+    public void print(String x) {
+        System.out.println(x);
+    }
+    public void print(String x, String y) {
+        System.out.println(x + " " + y);
+    }
+}

T5Q2-A-Sol1/src/ClassF.java

@@ -0,0 +1,5 @@
+public class ClassF extends ClassE {
+    public void print(int x) {
+        System.out.println(x);
+    }
+}

T5Q2-A-Sol1/src/ClassG.java

@@ -0,0 +1,5 @@
+public class ClassG extends ClassF {
+    public void print(String x) {
+        System.out.println(x);
+    }
+}

T5Q2-A-Sol1/src/Main.java

@@ -0,0 +1,5 @@
+public class Main {
+    public static void main(String[] args) {
+        ClassF z = new ClassF();
+    }
+}

T5Q2-A-Sol2/T5Q2-A-Sol2.iml

@@ -0,0 +1,11 @@
+<?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://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T5Q2-A-Sol2/src/ClassA.java

@@ -0,0 +1,5 @@
+public class ClassA {
+    public void print(int x, String y) {
+        System.out.println(x + " " + y);
+    }
+}

T5Q2-A-Sol2/src/ClassB.java

@@ -0,0 +1,5 @@
+public class ClassB extends ClassA {
+    public void print(int x) {
+        System.out.println(x);
+    }
+}

T5Q2-A-Sol2/src/ClassC.java

@@ -0,0 +1,3 @@
+public abstract class ClassC extends ClassA {
+    public abstract void print(String x, String y);
+}

T5Q2-A-Sol2/src/ClassD.java

@@ -0,0 +1,5 @@
+public class ClassD extends ClassC {
+    public void print(String a, String b) {
+        System.out.println(a + " " + b);
+    }
+}

T5Q2-A-Sol2/src/ClassE.java

@@ -0,0 +1,6 @@
+public abstract class ClassE extends ClassC {
+    public void print(String x) {
+        System.out.println(x);
+    }
+    public abstract void print(String x, String y);
+}

T5Q2-A-Sol2/src/ClassF.java

@@ -0,0 +1,8 @@
+public class ClassF extends ClassE {
+    public void print(int x) {
+        System.out.println(x);
+    }
+    public void print(String x, String y) {
+        System.out.println(x + " " + y);
+    }
+}

T5Q2-A-Sol2/src/ClassG.java

@@ -0,0 +1,8 @@
+public class ClassG extends ClassF {
+    public void print(String x) {
+        System.out.println(x);
+    }
+    public void print(String x, String y) {
+        System.out.println(x + " " + y);
+    }
+}

T5Q2-A-Sol2/src/Main.java

@@ -0,0 +1,5 @@
+public class Main {
+    public static void main(String[] args) {
+
+    }
+}

T5Q2-A/T5Q2-A.iml

@@ -0,0 +1,11 @@
+<?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://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T5Q2-A/src/ClassA.java

@@ -0,0 +1,5 @@
+public class ClassA {
+    public void print(int x, String y) {
+        System.out.println(x + " " + y);
+    }
+}

T5Q2-A/src/ClassB.java

@@ -0,0 +1,5 @@
+public class ClassB extends ClassA {
+    public void print(int x) {
+        System.out.println(x);
+    }
+}

T5Q2-A/src/ClassC.java

@@ -0,0 +1,3 @@
+public abstract class ClassC extends ClassA {
+    public abstract void print(String x, String y);
+}

T5Q2-A/src/ClassD.java

@@ -0,0 +1,5 @@
+public class ClassD extends ClassC {
+    public void print(String a, String b) {
+        System.out.println(a + " " + b);
+    }
+}

T5Q2-A/src/ClassE.java

@@ -0,0 +1,5 @@
+public class ClassE extends ClassC {
+    public void print(String x) {
+        System.out.println(x);
+    }
+}

T5Q2-A/src/ClassF.java

@@ -0,0 +1,5 @@
+public class ClassF extends ClassE {
+    public void print(int x) {
+        System.out.println(x);
+    }
+}

T5Q2-A/src/ClassG.java

@@ -0,0 +1,5 @@
+public class ClassG extends ClassF {
+    public void print(String x) {
+        System.out.println(x);
+    }
+}

T5Q2-A/src/Main.java

@@ -0,0 +1,5 @@
+public class Main {
+    public static void main(String[] args) {
+        ClassF z = new ClassF();
+    }
+}

T5Q2-B-FromSol1/T5Q2-B-FromSol1.iml

@@ -0,0 +1,11 @@
+<?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://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T5Q2-B-FromSol1/src/ClassA.java

@@ -0,0 +1,5 @@
+public class ClassA {
+    public void print(int x, String y) {
+        System.out.println(x + " " + y);
+    }
+}

T5Q2-B-FromSol1/src/ClassB.java

@@ -0,0 +1,5 @@
+public class ClassB extends ClassA {
+    public void print(int x) {
+        System.out.println(x);
+    }
+}

T5Q2-B-FromSol1/src/ClassC.java

@@ -0,0 +1,3 @@
+public abstract class ClassC extends ClassA {
+    public abstract void print(String x, String y);
+}

T5Q2-B-FromSol1/src/ClassD.java

@@ -0,0 +1,5 @@
+public class ClassD extends ClassC {
+    public void print(String a, String b) {
+        System.out.println(a + " " + b);
+    }
+}

T5Q2-B-FromSol1/src/ClassE.java

@@ -0,0 +1,8 @@
+public class ClassE extends ClassC {
+    public void print(String x) {
+        System.out.println(x);
+    }
+    public void print(String x, String y) {
+        System.out.println(x + " " + y);
+    }
+}

T5Q2-B-FromSol1/src/ClassF.java

@@ -0,0 +1,5 @@
+public class ClassF extends ClassE {
+    public void print(int x) {
+        System.out.println(x);
+    }
+}

T5Q2-B-FromSol1/src/ClassG.java

@@ -0,0 +1,5 @@
+public class ClassG extends ClassF {
+    public void print(String x) {
+        System.out.println(x);
+    }
+}

T5Q2-B-FromSol1/src/Main.java

@@ -0,0 +1,15 @@
+public class Main {
+    public static void main(String[] args) {
+        // I - Works
+//        ClassC c = new ClassD();
+//        c.print("hello", "there");
+
+        // II - Does not compile because class C is abstract
+//        ClassA a = new ClassC();
+//        a.print(1, "there");
+
+        // III - Doesn't work - Class A does not have print(string, string) method
+//        ClassA a = new ClassF();
+//        a.print("hello", "there");
+    }
+}

T5Q2-B-FromSol2/T5Q2-B-FromSol2.iml

@@ -0,0 +1,11 @@
+<?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://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T5Q2-B-FromSol2/src/ClassA.java

@@ -0,0 +1,5 @@
+public class ClassA {
+    public void print(int x, String y) {
+        System.out.println(x + " " + y);
+    }
+}

T5Q2-B-FromSol2/src/ClassB.java

@@ -0,0 +1,5 @@
+public class ClassB extends ClassA {
+    public void print(int x) {
+        System.out.println(x);
+    }
+}

T5Q2-B-FromSol2/src/ClassC.java

@@ -0,0 +1,3 @@
+public abstract class ClassC extends ClassA {
+    public abstract void print(String x, String y);
+}

T5Q2-B-FromSol2/src/ClassD.java

@@ -0,0 +1,5 @@
+public class ClassD extends ClassC {
+    public void print(String a, String b) {
+        System.out.println(a + " " + b);
+    }
+}

T5Q2-B-FromSol2/src/ClassE.java

@@ -0,0 +1,6 @@
+public abstract class ClassE extends ClassC {
+    public void print(String x) {
+        System.out.println(x);
+    }
+    public abstract void print(String x, String y);
+}

T5Q2-B-FromSol2/src/ClassF.java

@@ -0,0 +1,8 @@
+public class ClassF extends ClassE {
+    public void print(int x) {
+        System.out.println(x);
+    }
+    public void print(String x, String y) {
+        System.out.println(x + " " + y);
+    }
+}

T5Q2-B-FromSol2/src/ClassG.java

@@ -0,0 +1,8 @@
+public class ClassG extends ClassF {
+    public void print(String x) {
+        System.out.println(x);
+    }
+    public void print(String x, String y) {
+        System.out.println(x + " " + y);
+    }
+}

T5Q2-B-FromSol2/src/Main.java

@@ -0,0 +1,15 @@
+public class Main {
+    public static void main(String[] args) {
+        // I - Works
+        ClassC c = new ClassD();
+        c.print("hello", "there");
+
+        // II - Does not compile because class C is abstract
+//        ClassA a = new ClassC();
+//        a.print(1, "there")
+
+        // III - Works
+        ClassF a = new ClassF();
+        a.print("hello", "there");
+    }
+}

T5Q2-C/T5Q2-C.iml

@@ -0,0 +1,11 @@
+<?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://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="jdk" jdkName="openjdk-22" jdkType="JavaSDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T5Q2-C/src/ClassA.java

@@ -0,0 +1,5 @@
+public class ClassA {
+    public void print(int x, String y) {
+        System.out.println(x + " " + y);
+    }
+}

T5Q2-C/src/ClassB.java

@@ -0,0 +1,5 @@
+public class ClassB extends ClassA {
+    public void print(int x) {
+        System.out.println(x);
+    }
+}

T5Q2-C/src/ClassC.java

@@ -0,0 +1,5 @@
+public class ClassC extends ClassA {
+    public void print(String x, String y) {
+        System.out.println(x + " " + y);
+    }
+}

T5Q2-C/src/ClassD.java

@@ -0,0 +1,5 @@
+public class ClassD extends ClassC {
+    public void print(String a, String b) {
+        System.out.println(a + " " + b);
+    }
+}

T5Q2-C/src/ClassE.java

@@ -0,0 +1,5 @@
+public class ClassE extends ClassC {
+    public void print(String x) {
+        System.out.println(x);
+    }
+}

T5Q2-C/src/ClassF.java

@@ -0,0 +1,5 @@
+public class ClassF extends ClassE {
+    public void print(int x) {
+        System.out.println(x);
+    }
+}

T5Q2-C/src/ClassG.java

@@ -0,0 +1,5 @@
+public class ClassG extends ClassF {
+    public void print(String x) {
+        System.out.println(x);
+    }
+}

T5Q2-C/src/Main.java

@@ -0,0 +1,32 @@
+public class Main {
+    public static void main(String[] args) {
+        // I - Doesn't work because downcast needs to be explicitly declared
+//        ClassC c = new ClassD();
+//        ClassE e = c;
+//        ClassE e = (ClassE) c;
+
+        // II - Can´t upcast because they are from different family branches
+//        ClassB b = new ClassE();
+//        b.print("hello");
+
+        // III
+//        ClassA a = new ClassF(); // Ok
+//        a.print(12, "there"); // Ok
+//        a.print(88); // Compilation error
+
+        // IV
+//        ClassA a = new ClassC(); // Ok
+//        ClassG g = new (ClassG)a; // Syntax error
+//        g.print("hello"); // RunTime error: trick
+
+        // V
+//        ClassA a = new ClassC(); // ok
+//        ClassG g = (ClassG)a; // ok
+//        g.print("hello", "there"); // Runtime error: trick
+
+        // VI
+//        ClassA a = new ClassF(); // OK
+//        ClassC f = (ClassC)a; // Ok
+//        f.print(88, "there"); // Ok
+    }
+}

T5Q3/T5Q3.iml

@@ -0,0 +1,11 @@
+<?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://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

T5Q3/src/TestPolygon.java

@@ -29,16 +29,6 @@ public class TestPolygon {
 
 
 
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