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AreaG.java

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+//program 9 b
+public class AreaG<T> {
+
+    private T t;
+
+    public void add(T t) {
+        this.t = t;
+    }
+
+    public T get() {
+        return t;
+    }
+
+    public static void main(String[] args) {
+        AreaG<Integer> rectangle = new AreaG<>(); 
+        AreaG<Double> circle = new AreaG<>();
+
+        rectangle.add(10);
+        circle.add(2.5);
+
+        System.out.println("Area of a rectangle is: " +rectangle.get());
+        System.out.println("Area of a Circle is: " +circle.get());
+    }
+}

ArrayList11.java

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+// 11. write a java program to demonstrate ArrayList
+import java.util.ArrayList;
+public class ArrayList11 {
+	public static void main(String[] args){
+		ArrayList<String> elementList = new ArrayList<>();
+		elementList.add("Hydrogen");
+		elementList.add("Helium");
+		elementList.add("Lithium");
+
+		System.out.println("Element at index 0: " + elementList.get(0));
+		System.out.println("Element at index 1: " + elementList.get(1));
+		System.out.println("Element at index 2: " + elementList.get(2));
+		
+		System.out.println("Periodic Table Elements: ");
+		for(String element: elementList) {
+			System.out.println(element);
+		}
+
+		elementList.remove(elementList.get(2));
+		System.out.println("Size of elementList after removal of Lithium is: " + elementList.size());
+	}
+}

GenericClass.java

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+//write a java code for generic class
+public class GenericClass<T1, T2> {
+    public void display(T1 var1, T2 var2) {
+        System.out.println("Name: " + var1 + ", ID: " + var2);
+    }
+
+    public static void main(String[] args) {
+        GenericClass<String, Integer> obj1 = new GenericClass<String, Integer>();
+        GenericClass<Integer, Integer> obj2 = new GenericClass<Integer, Integer>();
+
+        obj1.display("Misa", 101);
+        obj2.display(201, 301);
+    }
+}

JavaCollection1.java

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+//write a java code to implement iterator to acess collection element
+import java.util.*;  
+
+class TestJavaCollection1 {  
+    public static void main(String args[]) {  
+        ArrayList<String> list = new ArrayList<String>(); // Creating arraylist  
+
+        list.add("Aditya");   // Adding object in arraylist  
+        list.add("Misa");  
+        list.add("Vidhi");  
+        list.add("Suraj");  
+
+        // Traversing list through Iterator  
+        Iterator<String> itr = list.iterator();  
+        while (itr.hasNext()) {  
+            System.out.println(itr.next());  
+        }  
+    }  
+}

SortingArray.java

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+//write a java program for sorting arrayList
+import java.util.ArrayList;
+import java.util.Collections;
+
+public class SortingArray
+{
+  public static void main(String[] args)
+  {
+    ArrayList<String> arrayList = new ArrayList<>();
+    
+    arrayList.add("Panvel");
+    arrayList.add("Khandeshwar");
+    arrayList.add("Mansarover");
+    arrayList.add("Kharghar");
+    arrayList.add("Belapur");
+    arrayList.add("Seawoods");
+    arrayList.add("Nerul");
+    arrayList.add("Juinagar");
+    arrayList.add("Sanpada");
+    arrayList.add("Vashi");
+    arrayList.add("Mankhurd");
+
+    System.out.println("\nUnsorted List: " +arrayList);
+    Collections.sort(arrayList);
+    System.out.println("\nSorted List: " +arrayList);
+  }
+}