Web Reference: Mar 25, 2026 · Java Method References are a shorthand way to refer to an existing method without invoking it. They were introduced in Java 8 to make lambda expressions shorter, cleaner, and more readable. Method references use the double colon (::) operator and are mainly used with functional interfaces. Jan 18, 2026 · Instead of writing a lambda body that explicitly invokes a method (e.g., s -> System.out.println(s)), you can reference the method directly using the :: operator. Method references are not executed immediately; they are functional interface instances that can be invoked later. In this video, we will see the method reference using the double colon operator. We use lambda expressions to write the implementation logic for the abstract method of the functional interfaces.
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