Difference between Generic and Non generic collections?

Generic	Non generic
The collection that can hold same data type is called Generic.	The collection that can hold different data type is called Non generic.
Type casting is not required	Typecasting is required.
Type safe and compile time checking	Not Type safe and run time checking
Syntax: Class Or Interface<Type> Example: Suppose you are creating an object of ArrayList Class then write like this..    ArrayList<String> A1 = new ArrayList<String>();              A1.add("DEV");             A1.add(“Surya”);     A1.add(“Madhu”);         Explanation: You can add only string value because you define the datatype as String in ArrayList and you know that it holds same data type.	Syntax: Class Or Interface Example: Suppose you are creating an object of ArrayList Class then write like this.. ArrayList A1=new ArrayList(); A1.add(12); A1.add(“Ram”); A1.add(15.75);   Explanation: You can add any value(int,double,string) because there is no data type mentioned in ArrayList and you know that it holds different datatype.