The document explains Java generics, which are features that allow the definition and use of generic types and methods. It covers types of Java generics, including generic classes, interfaces, methods, and constructors, as well as the advantages of generics like code reusability and type safety. Additionally, it describes the implementation of generic functions that adapt based on the types of arguments provided.

2. WHAT IS GENERICS IN JAVA?
TYPES OF JAVA GENERICS
GENERIC FUNCTIONS
ADVANTAGES OF GENERICS IN JAVA
WHY GENERICS?
www.edureka.co/java-j2ee-soa-training

3. www.edureka.co/java-j2ee-soa-training

4. WHAT IS GENERICS IN JAVA?
Generics is a term that denotes a set of
language features related to the definition and
use of Generic types and methods.
www.edureka.co/java-j2ee-soa-training

5. www.edureka.co/java-j2ee-soa-training

6. WHY JAVA GENERICS?
www.edureka.co/java-j2ee-soa-training

7. TYPES OF JAVA GENERICS
www.edureka.co/java-j2ee-soa-training

8. TYPES OF
JAVA
GENERICS
Generic Type Class
class Genericclass{
private Object x;
public void set(Object x) { this.x = x; }
public Object get() { return x; }
}
www.edureka.co/java-j2ee-soa-training

9. TYPES OF
JAVA
GENERICS
Generic Type Interface
interface GenericInterface<T1, T2>
{
T2 PerformExecution(T1 x);
T1 ReverseExecution(T2 x); }
class Genericclass implements
GenericInterface<String, Integer> {
public Integer PerformExecution(String x)
{//execution code }
public String ReverseExecution(Integer x)
{ //execution code }
}
www.edureka.co/java-j2ee-soa-training

10. TYPES OF
JAVA
GENERICS
Generic Type Method
public static <T> int countAllOccurrences(T[]
list, T element) {
int count = 0;
if (element == null) {
for ( T listElement : list )
if (listElement == null)
count++;
}
else {
for ( T listElement : list )
if (element.equals(listElement))
count++;
}
return count;
}
www.edureka.co/java-j2ee-soa-training

11. TYPES OF
JAVA
GENERICS
Generic Type Constructor
class Dimension<T> {
private T length;
private T width;
private T height; }
public Dimension(T length, T width, T height){
super();
this.length = length;
this.width = width;
this.height = height;
}
www.edureka.co/java-j2ee-soa-training

12. GENERIC FUNCTIONS
www.edureka.co/java-j2ee-soa-training

13. GENERIC FUNCTIONS
We can also write generic functions that can be
called with different types of arguments based
on the type of arguments passed to generic
method, & further the compiler handles each
method.
www.edureka.co/java-j2ee-soa-training

14. www.edureka.co/java-j2ee-soa-training

15. ADVANTAGES OF
GENERICS IN
JAVA
Code Reusability
Type Safety
Individual type casting not required
Implementing non generic algorithms
www.edureka.co/java-j2ee-soa-training

16. Copyright © 2017, edureka and/or its affiliates. All rights reserved.
www.edureka.co

17. www.edureka.co/java-j2ee-soa-training