Client and backend. Every class listed here is shared: the same code is compiled into your app and into your server.

package java.util.function

Types

`interface BiConsumer`	An operation on two values that answers nothing.
`interface BiFunction`	A function of two arguments.
`interface BiPredicate`	A test of two arguments; the two-argument form of `Predicate`.
`interface BinaryOperator`	An operation on two values of one type that answers that type.
`interface BooleanSupplier`	A source of `boolean` values; the `boolean` form of `Supplier`.
`interface Consumer`	An operation on one value that answers nothing.
`interface DoubleBinaryOperator`	An operation on two `double` values that answers a `double`; the `double` form of `BinaryOperator`.
`interface DoubleConsumer`	An operation on one `double` that answers nothing; the `double` form of `Consumer`.
`interface DoubleFunction`	A function of one `double`; the `double` form of `Function`.
`interface DoublePredicate`	A test of one `double`; the `double` form of `Predicate`.
`interface DoubleSupplier`	A source of `double` values; the `double` form of `Supplier`.
`interface DoubleToIntFunction`	A function of one `double` that answers a `int`.
`interface DoubleToLongFunction`	A function of one `double` that answers a `long`.
`interface DoubleUnaryOperator`	An operation on one `double` that answers a `double`; the `double` form of `UnaryOperator`.
`interface Function`	A function of one argument.
`interface IntBinaryOperator`	An operation on two `int` values that answers a `int`; the `int` form of `BinaryOperator`.
`interface IntConsumer`	An operation on one `int` that answers nothing; the `int` form of `Consumer`.
`interface IntFunction`	A function of one `int`; the `int` form of `Function`.
`interface IntPredicate`	A test of one `int`; the `int` form of `Predicate`.
`interface IntSupplier`	A source of `int` values; the `int` form of `Supplier`.
`interface IntToDoubleFunction`	A function of one `int` that answers a `double`.
`interface IntToLongFunction`	A function of one `int` that answers a `long`.
`interface IntUnaryOperator`	An operation on one `int` that answers a `int`; the `int` form of `UnaryOperator`.
`interface LongBinaryOperator`	An operation on two `long` values that answers a `long`; the `long` form of `BinaryOperator`.
`interface LongConsumer`	An operation on one `long` that answers nothing; the `long` form of `Consumer`.
`interface LongFunction`	A function of one `long`; the `long` form of `Function`.
`interface LongPredicate`	A test of one `long`; the `long` form of `Predicate`.
`interface LongSupplier`	A source of `long` values; the `long` form of `Supplier`.
`interface LongToDoubleFunction`	A function of one `long` that answers a `double`.
`interface LongToIntFunction`	A function of one `long` that answers a `int`.
`interface LongUnaryOperator`	An operation on one `long` that answers a `long`; the `long` form of `UnaryOperator`.
`interface ObjDoubleConsumer`	An operation on an object and a `double` that answers nothing; the `double` form of `BiConsumer`.
`interface ObjIntConsumer`	An operation on an object and a `int` that answers nothing; the `int` form of `BiConsumer`.
`interface ObjLongConsumer`	An operation on an object and a `long` that answers nothing; the `long` form of `BiConsumer`.
`interface Predicate`	A test of one value.
`interface Supplier`	A source of values.
`interface ToDoubleBiFunction`	A function of two arguments that answers a `double`; the `double` form of `BiFunction`.
`interface ToDoubleFunction`	A function that answers a `double`; the `double` form of `Function`.
`interface ToIntBiFunction`	A function of two arguments that answers a `int`; the `int` form of `BiFunction`.
`interface ToIntFunction`	A function that answers a `int`; the `int` form of `Function`.
`interface ToLongBiFunction`	A function of two arguments that answers a `long`; the `long` form of `BiFunction`.
`interface ToLongFunction`	A function that answers a `long`; the `long` form of `Function`.
`interface UnaryOperator`	An operation on one value that answers the same type.