Difference between Arraylist and Generic List

//Arraylist - Arraylist accept values as object
//So i can give any type of data in to that.
//Here in this eg: an arraylist object accepting
//values like String,int,decimal, char and a custom object

Employee emp = new Employee("2", "Litson");
ArrayList arr = new ArrayList();
arr.Add("Sabu");
arr.Add(234);
arr.Add(45.236);
arr.Add(emp);
arr.Add('s');
//This process is known as boxing

//To get inserted vales from arraylist we have to specify the index.
//So it will return that values as object.
//we have to cast that value from object to its original type.

String name = (String)arr[0];
int num = (int)arr[1];
decimal dec = (decimal)arr[2];
Employee em = (Employee)arr[3];
char c = (char)arr[4];
//This process that is converting from object to its original type is known as unboxing
//------------------------------------------------------------------------------------
//Generic List
//List<>

//Main advantage of Generic List is we can specify the type of data we are going to insert in to
//List. So that we can avoid boxing and unboxing
//Eg:
List<string> strLst = new List<string>();
strLst.Add("Sabu");//Here List accepting values as String only
strLst.Add("Litson");
strLst.Add("Sabu");
strLst.Add("Sabu");

List<int> intLst = new List<int>();
intLst.Add(12);//Here List accepting values as int only
intLst.Add(14);
intLst.Add(89);
intLst.Add(34);

List<decimal> decLst = new List<decimal>();
decLst.Add(2.5M);//Here List accepting values as deciaml only
decLst.Add(14.4587m);
decLst.Add(89.258m);
decLst.Add(34.159m);

List<Employee> empLst = new List<Employee>();
empLst.Add(new Employee("1", "Sabu"));//Here List accepting Employee Objects only
empLst.Add(new Employee("2", "Mahesh"));
empLst.Add(new Employee("3", "Sajith"));
empLst.Add(new Employee("4", "Binu"));


//To get values from Generic List
String nme = strLst[0]; //No need of casting
int nm = intLst[0];
Decimal decVal = decLst[0];
Employee empVal = empLst[0];