In Java, == checks if two object references point to the same memory location, meaning they are the exact same instance. On the other hand, .equals() compares the contents or values of two objects, assuming the method is properly overridden in the class. For example, two different String objects may contain the same characters but reside at different memory locations—== would return false, while .equals() would return true. Use == for reference comparison and .equals() for content comparison. Understanding this distinction is crucial for writing efficient and error-free code. Learn more through a comprehensive Java Certification course.
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