Javaaaaaaaaaaaaaaaaaaaaa

.gitignore

@@ -175,3 +175,4 @@
 /Semester 3/Assignments/MP3_Recursion_CalebFontenot/dist/
 /BigIntegerFibonacci/nbproject/private/
 /BigIntegerFibonacci/build/
+/Semester 3/GenericRules/target/

Semester 3/GenericRules/nb-configuration.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project-shared-configuration>
+    <!--
+This file contains additional configuration written by modules in the NetBeans IDE.
+The configuration is intended to be shared among all the users of project and
+therefore it is assumed to be part of version control checkout.
+Without this configuration present, some functionality in the IDE may be limited or fail altogether.
+-->
+    <properties xmlns="http://www.netbeans.org/ns/maven-properties-data/1">
+        <!--
+Properties that influence various parts of the IDE, especially code formatting and the like. 
+You can copy and paste the single properties, into the pom.xml file and the IDE will pick them up.
+That way multiple projects can share the same settings (useful for formatting rules for example).
+Any value defined here will override the pom.xml file value but is only applicable to the current project.
+-->
+        <netbeans.hint.jdkPlatform>JDK_20__System_</netbeans.hint.jdkPlatform>
+    </properties>
+</project-shared-configuration>

Semester 3/GenericRules/pom.xml

@@ -7,8 +7,8 @@
     <packaging>jar</packaging>
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.source>20</maven.compiler.source>
-        <maven.compiler.target>17</maven.compiler.target>
+        <maven.compiler.target>20</maven.compiler.target>
         <exec.mainClass>edu.slcc.asdv.caleb.gemericrules.GemericRules</exec.mainClass>
     </properties>
     <name>GenericRules</name>

Semester 3/GenericRules/src/main/java/edu/slcc/asdv/caleb/gemericrules/GenericRule3.java

@@ -15,6 +15,6 @@ public class GenericRule3 {
     public static void main(String[] args)
     {
         List<Number> list1 = new ArrayList<Number>();
-        ArrayList<Number> list2 = new ArrayList<Integer>();
+        //ArrayList<Number> list2 = new ArrayList<Integer>();
     }
 }

Semester 3/GenericRules/src/main/java/edu/slcc/asdv/caleb/gemericrules/GenericRule4.java

@@ -0,0 +1,23 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+package edu.slcc.asdv.caleb.gemericrules;
+
+import java.util.ArrayList;
+
+/**
+ *
+ * @author caleb
+ */
+public class GenericRule4 {
+    public static void f1(ArrayList<?> list) {
+        System.out.println(list.size());
+        ///list.add(new Integer(5));
+    }
+    public static void main(String[] args)
+    {
+        f1(new ArrayList<Integer>());
+        f1(new ArrayList<Double>());
+    }
+}

Semester 3/GenericRules/src/main/java/edu/slcc/asdv/caleb/gemericrules/GenericRule5.java

@@ -0,0 +1,24 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+package edu.slcc.asdv.caleb.gemericrules;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ *
+ * @author caleb
+ */
+public class GenericRule5 {
+    public static void main(String[] args)
+    {
+        List<?> list1 = new ArrayList<Integer>();
+        ArrayList<?> list2 = new ArrayList<Double>();
+        ArrayList<?> list3 = new ArrayList<String>();
+        //list3.add("abc");
+        System.out.println(list3.size());
+        System.out.println(list3.subList(0, 0));
+    }
+}

Semester 3/GenericRules/src/main/java/edu/slcc/asdv/caleb/gemericrules/GenericRule6.java

@@ -0,0 +1,32 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+package edu.slcc.asdv.caleb.gemericrules;
+
+import java.util.ArrayList;
+import static java.util.Collections.list;
+import java.util.List;
+
+/**
+ *
+ * @author caleb
+ */
+public class GenericRule6 {
+    public static void f6(List<? extends A> list) {
+        System.out.println(list.size());
+    }
+    public static void main(String[] args)
+    {
+        List<A> list1 = new ArrayList<>();
+        list1.add (new C());
+        list1.add (new B());
+        f6(list1);
+        
+        ArrayList<B> list2 = new ArrayList<>();
+
+    }
+}
+//class A{}
+//class B extends A{}
+//class C extends B{}

Semester 3/GenericRules/src/main/java/edu/slcc/asdv/caleb/gemericrules/GenericRule7.java

@@ -0,0 +1,44 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+package edu.slcc.asdv.caleb.gemericrules;
+
+import java.util.ArrayList;
+import static java.util.Collections.list;
+import java.util.List;
+
+/**
+ *
+ * @author caleb
+ */
+public class GenericRule7 {
+
+    public static void f6(List<? extends A> list)
+    {
+        System.out.println(list.size());
+    }
+
+    public static void main(String[] args)
+    {
+        List<A> list1 = new ArrayList<>();
+        list1.add(new C());
+        list1.add(new B());
+
+        List<? extends A> list = list1;
+        
+        ArrayList<B> list2 = new ArrayList<>();
+        list1.add(new A());
+        list = list2;
+
+    }
+}
+
+class A {
+}
+
+class B extends A {
+}
+
+class C extends B {
+}

Semester 3/GenericRules/src/main/java/edu/slcc/asdv/caleb/gemericrules/GenericRule8.java

@@ -0,0 +1,39 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+package edu.slcc.asdv.caleb.gemericrules;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ *
+ * @author caleb
+ */
+public class GenericRule8<T1> {
+
+   // List<? extends T1> lista = new ArrayList<String>();
+
+    public static <T2> void f8(List<? extends T2> list)
+    {
+        System.out.println(list.size());
+        //list.add(new C());
+    }
+    
+    public static void main(String[] args)
+    {
+        list<A> list1 = new ArrayList<>();
+        list1.add(new C());
+        list1.add(new B());
+        f8(list1);
+        
+        ArrayList<B> list2 = new ArrayList<>();
+        list2.add(new A());
+        f8(list2);
+        
+        ArrayList<String> list3 = new ArrayList<String>();
+        list3.add("abc");
+        f8(list3);
+    }
+}