In my journey as a software engineer, I've often encountered the Singleton Pattern, a key design pattern that ensures a class has only one instance and provides a global point of access to it. Here’s a quick breakdown:
Why use the Singleton Pattern? - Controlled access to a single instance - Reduced memory footprint - Easier debugging and testing
How to implement it in Java? Here’s a simple example:
public class Singleton { private static Singleton instance;
private Singleton() {}
public static Singleton getInstance() { if (instance == null) { instance = new Singleton(); } return instance; } }
Key considerations: - Make the constructor private to prevent instantiation from outside. - Use a static method to provide access to the instance.
Remember, while the Singleton Pattern can be powerful, use it judiciously to avoid creating hidden dependencies in your code. Happy coding! 🚀
In my journey as a software engineer, I've often encountered the Singleton Pattern, a key design pattern that ensures a class has only one instance and provides a global point of access to it. Here’s a quick breakdown:
Why use the Singleton Pattern? - Controlled access to a single instance - Reduced memory footprint - Easier debugging and testing
How to implement it in Java? Here’s a simple example:
public class Singleton { private static Singleton instance;
private Singleton() {}
public static Singleton getInstance() { if (instance == null) { instance = new Singleton(); } return instance; } }
Key considerations: - Make the constructor private to prevent instantiation from outside. - Use a static method to provide access to the instance.
Remember, while the Singleton Pattern can be powerful, use it judiciously to avoid creating hidden dependencies in your code. Happy coding! 🚀
BY Top Java Quiz Questions ☕️
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Bitcoin is built on a distributed digital record called a blockchain. As the name implies, blockchain is a linked body of data, made up of units called blocks that contain information about each and every transaction, including date and time, total value, buyer and seller, and a unique identifying code for each exchange. Entries are strung together in chronological order, creating a digital chain of blocks. “Once a block is added to the blockchain, it becomes accessible to anyone who wishes to view it, acting as a public ledger of cryptocurrency transactions,” says Stacey Harris, consultant for Pelicoin, a network of cryptocurrency ATMs. Blockchain is decentralized, which means it’s not controlled by any one organization. “It’s like a Google Doc that anyone can work on,” says Buchi Okoro, CEO and co-founder of African cryptocurrency exchange Quidax. “Nobody owns it, but anyone who has a link can contribute to it. And as different people update it, your copy also gets updated.”
What is Telegram?
Telegram’s stand out feature is its encryption scheme that keeps messages and media secure in transit. The scheme is known as MTProto and is based on 256-bit AES encryption, RSA encryption, and Diffie-Hellman key exchange. The result of this complicated and technical-sounding jargon? A messaging service that claims to keep your data safe.Why do we say claims? When dealing with security, you always want to leave room for scrutiny, and a few cryptography experts have criticized the system. Overall, any level of encryption is better than none, but a level of discretion should always be observed with any online connected system, even Telegram.
