Java Pass Method as Parameter

To pass a method as a parameter in Java, you can use a functional interface and a lambda expression.

A functional interface is an interface that has a single abstract method. In Java, functional interfaces are usually annotated with the @FunctionalInterface annotation. For example:

@FunctionalInterface
public interface MyFunction {
    void apply();
}

To pass a method as a parameter, you can create a lambda expression that implements the abstract method of the functional interface. For example:

MyFunction f = () -> System.out.println("Hello, World!");

You can then pass the lambda expression as a parameter to a method:

public void execute(MyFunction f) {
    f.apply();
}

To call the execute() method and pass the lambda expression as a parameter, you can do the following:

execute(f);

Alternatively, you can pass the lambda expression directly as a parameter:

execute(() -> System.out.println("Hello, World!"));

I hope this helps! Let me know if you have any questions.