Sunday, February 12, 2023

What is the difference between == and .equals() in Java?

 The == operator compares references to objects, while the .equals() method compares the contents of two objects. In most cases, you should use .equals() when comparing objects in Java.

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Concurrent Hashmap in java

  A ConcurrentHashMap is a thread-safe implementation of the Map interface in Java. Unlike a HashMap , which is not thread-safe and can ca...