Web Reference: Sep 6, 2025 · Java 8 introduced the Optional class in the java.util package to handle the problem of null values more gracefully. Instead of risking NullPointerException (NPE), Optional provides a container object that may or may not hold a non-null value. NullPointerException is Java’s most common runtime error. Tony Hoare, who invented null references, called it his “billion-dollar mistake.” Java 8 introduced Optional to help, but using it effectively requires understanding when and how to apply it. Feb 15, 2026 · The intent of Java when releasing Optional was to use it as a return type, thus indicating that a method could return an empty value. As a matter of fact, the practice of using Optional as a method parameter is even discouraged by some code inspectors.
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