Proxy Design Pattern in Java

Learn: Properties & Implementation with example in Java of Proxy Design Pattern

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This Problem is synonym of following problems:
Proxy design pattern java,
real time example for Proxy design pattern in java,
when to use Proxy design pattern,
Proxy design pattern in java,
Proxy design pattern in spring,
design patterns in java,
Proxy design pattern implememt

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[CodingSimplified]

Minor update in Code in video: In constructor on line 22, it'll be out of if loop:

public DatabaseExecuterProxy(String name, String passwd) {
ifAdmin = true;
}
dbExecuter = new DatabaseExecuterImpl();
}

[vanamasaiharshapavan]

What ever logic we are writing in proxy class can be implemented in the method executeDatabase right by passing the username and password along with query to method . Why to go for another class ? Any specific advantages by writing the code seperately ?

[VLADICAKG]

Thanks for the explanation.
Just info, line: 34 will throw NullPointerException in case you're testing non-admin user with operation other than "DELETE".

[abhishekprasad]

I think constructor should be like this..
public DBExecutorProxy(String name, String password) {
if (name.equals("abhi") && password.equals("abhi")) {
this.isAdmin = true;
}
this.dbExecutor = new DBExecutorImpl();
}

[parmarkamlesh]

Proxy dp were used in hibernate I think, can you please include that examples.

[akulavenkatasainath]

I am still getting error for non admin as non-zero exit value?

[jijeshvu]

Why you're comparing string using == instead of .equals??

[shalinsharma]

dbexecutor will throw null pointer exception as you are not initialising it in case of non admin