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OOP (Object-Oriented Programming)

Object means a real-world entity such as a pen, chair, table, computer, watch, etc. Object-Oriented Programming is a methodology or paradigm to design a program using classes and objects. It simplifies software development and maintenance by providin

Jan 02, 2025 pm 03:49 PM

How to Optimize hashCode() Implementation for Efficient Collection Performance?

Optimizing hashCode() Implementation for CollectionsWhen overriding the equals method for a collection, careful consideration must be given to the...

Jan 02, 2025 pm 03:24 PM

How Can I Prevent `java.lang.NumberFormatException` When Parsing 'N/A' and other Non-Integer Strings in Java?

Preventing java.lang.NumberFormatException for Input String "N/A"An error known as "java.lang.NumberFormatException" arises when attempting to...

Jan 02, 2025 pm 03:23 PM

TODAY CLASS-BOUT- STATE,DATATYPE.

Concept of Objects: State, Behavior & Identity of an object The concept of objects is fundamental to object-oriented programming (OOP), and it revolves around three key aspects: state, behavior, and identity. State: Definition: For any given m

Jan 02, 2025 pm 02:55 PM

Why Does Java Require Variables in Lambda Expressions to Be Final or Effectively Final?

Fixing "Variable used in lambda expression should be final or effectively final" ErrorThis error occurs when attempting to access a non-final...

Jan 02, 2025 pm 02:53 PM

DAY Dec19

What is Java technology ? 1. Java is a programming language and computing platform first released by Sun Microsystems in 1995. It has evolved from humble beginnings to power a large share of today’s digital world, by providing the reliable pla

Jan 02, 2025 pm 02:29 PM

Java String Concatenation: ` ` Operator vs. `concat()` Method – Which is Better?

String Concatenation: A Comparison of concat() and the OperatorIn Java, strings can be concatenated using either the operator or the concat()...

Jan 02, 2025 pm 02:24 PM

Cricket task

Create a class called Cricket Have below method in it. public int calculate(int balls) { return balls * 6; } Create one more class called 'Player1' Have main method in it. Now, create instance for 'Cricket' class. Using instance, call calculate()

Jan 02, 2025 pm 02:19 PM

Reasons Why Rainbow Table Attacks Are Dangerous and How Salting Passwords Protects Against Them

1. Understanding Rainbow Table Attacks A Rainbow Table Attack is a cryptographic attack that uses a precomputed table of hash values to crack passwords. Unlike brute force attacks that generate all possible passwords and compute their hashes

Jan 02, 2025 pm 02:14 PM