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OOP (Object-Oriented Programming)

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?

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?

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.

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?

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

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?

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

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

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
How to Write Files to a Specific Directory on an Android SD Card?

How to Write Files to a Specific Directory on an Android SD Card?

Writing to a Specific Folder on an SD Card in AndroidWhen using the code snippet provided to download and write a file to the root directory of...

Jan 02, 2025 pm 02:13 PM
Math.random() vs. Random.nextInt(): Which Method Should You Choose for Generating Random Integers?

Math.random() vs. Random.nextInt(): Which Method Should You Choose for Generating Random Integers?

The Distinctions Between Math.random() and Random.nextInt()When working with random number generation in programming, two common methods often...

Jan 02, 2025 pm 01:47 PM
Why Does My JSON Object's Key-Value Order Change?

Why Does My JSON Object's Key-Value Order Change?

JSON Order Variability: Understanding the ImplicationsIn your code, you have defined a JSON object and attempted to specify the order of its...

Jan 02, 2025 pm 01:43 PM
How Can I Effectively Escape Strings in Java to Prevent SQL Injection?

How Can I Effectively Escape Strings in Java to Prevent SQL Injection?

Escape Strings to Prevent SQL Injection in JavaIn Java, escaping strings is crucial for preventing SQL injection attacks. The "replaceAll" string...

Jan 02, 2025 pm 01:35 PM
How to Properly Remove Top-Level Containers (JDialog, JFrame) in Java Swing to Avoid Memory Leaks?

How to Properly Remove Top-Level Containers (JDialog, JFrame) in Java Swing to Avoid Memory Leaks?

Remove Top-Level Container on RuntimeIn Java Swing applications, it can be challenging to remove top-level containers, such as JDialog or JFrame,...

Jan 02, 2025 pm 01:25 PM

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