DoubleSupplier (Java Platform SE 8 )
Keywords: java.util.function.DoubleSupplier interface
Date: 2026-03-16

compact1, compact2, compact3
java.util.function

## Interface DoubleSupplier

- Functional Interface:
    This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

      @FunctionalInterface
      public interface DoubleSupplier

  Represents a supplier of `double`-valued results. This is the `double`-producing primitive specialization of `Supplier`.

  There is no requirement that a distinct result be returned each time the supplier is invoked.

  This is a functional interface whose functional method is `getAsDouble()`.

  Since:
    1.8
  See Also:
    `Supplier`

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `double` | `getAsDouble()` Gets a result.

- - ### Method Detail

    - #### getAsDouble

          double getAsDouble()

      Gets a result.
      Returns:
        a result

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