Advantage of JAVA Generics:

There are mainly 3 advantages of generics. They are as follows:

TYPE-safety : We can hold only a single type of OBJECTS in generics. It doesn’t allow to store other objects.

Type casting is not required: There is no need to typecast the object.

Before Generics, we need to type cast.

List list = new ArrayList();
list.add("hello");
String s = (String) list.get(0);//typecasting
After Generics, we don't need to typecast the object.
List<String> list = new ArrayList<String>();
list.add("hello");
String s = list.get(0);

Compile-Time Checking: It is checked at compile time so problem will not occur at runtime. The good programming strategy says it is far better to handle the problem at compile time than runtime.

List<String> list = new ArrayList<String>();
list.add("hello");
list.add(32);//Compile Time ERROR

Advantage of Java Generics:

There are mainly 3 advantages of generics. They are as follows:

Type-safety : We can hold only a single type of objects in generics. It doesn’t allow to store other objects.

Type casting is not required: There is no need to typecast the object.

Before Generics, we need to type cast.

List list = new ArrayList();
list.add("hello");
String s = (String) list.get(0);//typecasting
After Generics, we don't need to typecast the object.
List<String> list = new ArrayList<String>();
list.add("hello");
String s = list.get(0);

Compile-Time Checking: It is checked at compile time so problem will not occur at runtime. The good programming strategy says it is far better to handle the problem at compile time than runtime.

List<String> list = new ArrayList<String>();
list.add("hello");
list.add(32);//Compile Time Error