What is JDBC? tccicomputercoaching.com

Immutable List-tccicomputercoaching.com

What is JDBC? tccicomputercoaching.com

JDBC stands for Java Database Connection. It allows to connect between front end ( Java Program) and back end .

JDBC helps you to write Java applications that manage these three programming activities:

1. Connect to a data source, like a database
2. Send queries and update statements to the database
3. Retrieve and process the results received from the database in answer to your query

JDBC is an standard API specification developed in order to move data from frontend to backend. This API consists of classes and interfaces written in Java. It basically acts as an interface (not the one we use in Java) or channel between your Java program and databases i.e it establishes a link between the two so that a programmer could send data from Java code and store it in the database for future use.

How it comes into an existence?

To remove platform-dependence, JDBC was developed by database vendor which consisted of classes and interfaces written in Java.

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Immutable List-tccicomputercoaching.com

List is a memory location where we can store multiple data.

What is Immutable List?

Immutable List in Programming Language

• Immutable List, as suggested by the name, is a type of List which is immutable. It means that the content of the List are fixed or constant after declaration, that is, they are read-only.
• If any attempt made to add, delete and update elements in the List, Unsupported Operation Exception is thrown.
• An Immutable List does not allow null element either.
• If any attempt made to create an Immutable List with null element, Null Pointer Exception is thrown. If any attempt is made to add null element in List, Unsupported Operation Exception is thrown.

Advantages of Immutable List

• They are thread safe.
• They are memory efficient.
• Since they are immutable, hence they can be passed over to third party libraries without any problem.

Note that it is an immutable collection,

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