# Java 常用的內建 Functional Interface

## Consumer<T>

public interface Consumer<T> {
    void accept(T t);
}

## Function<T,R>

public interface Function<T, R> {
    R apply(T t);
}

## Predicate<T>

public interface Predicate<T> {
    boolean test(T t);
}

## Supplier<T>

public interface Supplier<T> {

    T get();
}

###### tags: `java`