| Name | Description | Type | Package | Framework |
| BiConsumer | Represents an operation that accepts two input arguments and returns no result. | Interface | java.util.function | Java SE |
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| BiFunction | Represents a function that accepts two arguments and produces a result. | Interface | java.util.function | Java SE |
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| BinaryOperator | Represents an operation upon two operands of the same type, producing a result of the same type as the operands. | Interface | java.util.function | Java SE |
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| BiPredicate | Represents a predicate (boolean-valued function) of two arguments. | Interface | java.util.function | Java SE |
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| BooleanSupplier | Represents a supplier of boolean-valued results. | Interface | java.util.function | Java SE |
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| Consumer | Represents an operation that accepts a single input argument and returns no result. | Interface | java.util.function | Java SE |
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| DoubleBinaryOperator | Represents an operation upon two double-valued operands and producing a double-valued result. | Interface | java.util.function | Java SE |
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| DoubleConsumer | Represents an operation that accepts a single double-valued argument and returns no result. | Interface | java.util.function | Java SE |
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| DoubleFunction | Represents a function that accepts a double-valued argument and produces a result. | Interface | java.util.function | Java SE |
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| DoublePredicate | Represents a predicate (boolean-valued function) of one double-valued argument. | Interface | java.util.function | Java SE |
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| DoubleSupplier | Represents a supplier of double-valued results. | Interface | java.util.function | Java SE |
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| DoubleToIntFunction | Represents a function that accepts a double-valued argument and produces an int-valued result. | Interface | java.util.function | Java SE |
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| DoubleToLongFunction | Represents a function that accepts a double-valued argument and produces a long-valued result. | Interface | java.util.function | Java SE |
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| DoubleUnaryOperator | Represents an operation on a single double-valued operand that produces a double-valued result. | Interface | java.util.function | Java SE |
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| Function | Represents a function that accepts one argument and produces a result. | Interface | java.util.function | Java SE |
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| IntBinaryOperator | Represents an operation upon two int-valued operands and producing an int-valued result. | Interface | java.util.function | Java SE |
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| IntConsumer | Represents an operation that accepts a single int-valued argument and returns no result. | Interface | java.util.function | Java SE |
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| IntFunction | Represents a function that accepts an int-valued argument and produces a result. | Interface | java.util.function | Java SE |
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| IntPredicate | Represents a predicate (boolean-valued function) of one int-valued argument. | Interface | java.util.function | Java SE |
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| IntSupplier | Represents a supplier of int-valued results. | Interface | java.util.function | Java SE |
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| IntToDoubleFunction | Represents a function that accepts an int-valued argument and produces a double-valued result. | Interface | java.util.function | Java SE |
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| IntToLongFunction | Represents a function that accepts an int-valued argument and produces a long-valued result. | Interface | java.util.function | Java SE |
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| IntUnaryOperator | Represents an operation on a single int-valued operand that produces an int-valued result. | Interface | java.util.function | Java SE |
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| LongBinaryOperator | Represents an operation upon two long-valued operands and producing a long-valued result. | Interface | java.util.function | Java SE |
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| LongConsumer | Represents an operation that accepts a single long-valued argument and returns no result. | Interface | java.util.function | Java SE |
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| LongFunction | Represents a function that accepts a long-valued argument and produces a result. | Interface | java.util.function | Java SE |
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| LongPredicate | Represents a predicate (boolean-valued function) of one long-valued argument. | Interface | java.util.function | Java SE |
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| LongSupplier | Represents a supplier of long-valued results. | Interface | java.util.function | Java SE |
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| LongToDoubleFunction | Represents a function that accepts a long-valued argument and produces a double-valued result. | Interface | java.util.function | Java SE |
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| LongToIntFunction | Represents a function that accepts a long-valued argument and produces an int-valued result. | Interface | java.util.function | Java SE |
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| LongUnaryOperator | Represents an operation on a single long-valued operand that produces a long-valued result. | Interface | java.util.function | Java SE |
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| ObjDoubleConsumer | Represents an operation that accepts an object-valued and a double-valued argument, and returns no result. | Interface | java.util.function | Java SE |
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| ObjIntConsumer | Represents an operation that accepts an object-valued and a int-valued argument, and returns no result. | Interface | java.util.function | Java SE |
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| ObjLongConsumer | Represents an operation that accepts an object-valued and a long-valued argument, and returns no result. | Interface | java.util.function | Java SE |
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| Predicate | Represents a predicate (boolean-valued function) of one argument. | Interface | java.util.function | Java SE |
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| Supplier | Represents a supplier of results. | Interface | java.util.function | Java SE |
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| ToDoubleBiFunction | Represents a function that accepts two arguments and produces a double-valued result. | Interface | java.util.function | Java SE |
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| ToDoubleFunction | Represents a function that produces a double-valued result. | Interface | java.util.function | Java SE |
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| ToIntBiFunction | Represents a function that accepts two arguments and produces an int-valued result. | Interface | java.util.function | Java SE |
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| ToIntFunction | Represents a function that produces an int-valued result. | Interface | java.util.function | Java SE |
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| ToLongBiFunction | Represents a function that accepts two arguments and produces a long-valued result. | Interface | java.util.function | Java SE |
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| ToLongFunction | Represents a function that produces a long-valued result. | Interface | java.util.function | Java SE |
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| UnaryOperator | Represents an operation on a single operand that produces a result of the same type as its operand. | Interface | java.util.function | Java SE |