How to Find the First Non-Repeating Character in a String in Java etd_admin, December 13, 2024December 13, 2024 Learn how to find the first non-repeating character in a string in Java using HashMap for efficiency. Continue Reading
How to Find the Longest Substring Without Repeating Characters in Java etd_admin, December 4, 2024December 4, 2024 Learn how to find the longest substring without repeating characters in Java using the sliding window technique and hashmaps for optimal efficiency. Continue Reading
How to Use Singleton in Java etd_admin, December 1, 2024December 1, 2024 Learn how to use Singleton in Java with clear examples, tips to avoid pitfalls like thread-safety issues, and best practices for secure and efficient implementation. Continue Reading
How to Handle Circular Dependencies in Spring or Other Dependency Injection Frameworks etd_admin, December 1, 2024December 1, 2024 Learn how to handle circular dependencies in Spring using techniques like @Lazy, dependency refactoring, setter injection, and @PostConstruct for seamless bean management. Continue Reading
Differences Between Future and CompletableFuture in Java: When to Use Each etd_admin, November 25, 2024November 25, 2024 Learn the differences between Future and CompletableFuture in Java, including features, use cases, and examples for effective asynchronous programming. Continue Reading
Why Does Overriding equals() Require Overriding hashCode() in Java? etd_admin, November 23, 2024November 23, 2024 Learn why overriding equals in Java requires overriding hashCode. Understand the contract, its importance for collections, and see examples with code fixes. Continue Reading
How to Prevent ConcurrentModificationException When Modifying a List While Iterating Over It in Java etd_admin, November 23, 2024November 23, 2024 Learn how to prevent ConcurrentModificationException when modifying a Java List during iteration. Explore safe methods like Iterator.remove() and concurrent collections. Continue Reading