# What is Proxy Design Pattern 
* Proxy means ‘on behalf of’ or 'representing’ or ‘in place of’  are literal meanings of proxy and that directly explains Proxy Design Pattern.
* A proxy is a wrapper or agent object that is being called by the client to access the real serving object behind the scenes.

## Diagram
![Diagram](https://github.com/premaseem/DesignPatternsJava9/blob/proxy-pattern/diagrams/4_2-Proxy%20Design%20Pattern%20class%20diagram.jpeg "Diagram")

![Diagram](https://github.com/premaseem/DesignPatternsJava9/blob/proxy-pattern/diagrams/4_2_proxy_pattern_sequence.png "Diagram")


### When to use Proxy Design Pattern (Problem statement / Candidate application)
* When creation of object is expensive or heavy weight, which means, when a deep object graph is required in the object creation process, then a high weigh proxy objects
* With basic required fields is created and used until the actual object is not required.

### Learn Design Patterns with Java by Aseem Jain
This repository contains working project code used in video Course by Packt Publication with title "Learn Design Patterns with Java " authored by "Aseem Jain".

### Course link: 
https://www.packtpub.com/application-development/learn-design-patterns-java-9-video

### ![ http://in.linkedin.com/in/premaseem](https://github.com/premaseem/DesignPatternsJava9/blob/master/linkedin.png "http://in.linkedin.com/in/premaseem") Profile:  http://in.linkedin.com/in/premaseem

### Authors blog on design patterns:
https://premaseem.wordpress.com/category/computers/design-patterns/

### Software Design pattern community face book page:
https://www.facebook.com/DesignPatternGuru/

### Note: 
* This code base will work on Java 9 and above versions. 
* `diagrams` folders carry UML diagrams.
* `pattern` folder has code of primary example. 
* `patternBonus` folder has code of secondary or bonus example.