Interface PrimitiveIterator<T,T_CONS>
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- Type Parameters:
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T- the type of elements returned by this PrimitiveIterator. The type must be a wrapper type for a primitive type, such asIntegerfor the primitiveinttype. -
T_CONS- the type of primitive consumer. The type must be a primitive specialization ofConsumerforT, such asIntConsumerforInteger.
- All Superinterfaces:
- Iterator<T>
- All Known Subinterfaces:
- PrimitiveIterator.OfDouble, PrimitiveIterator.OfInt, PrimitiveIterator.OfLong
public interface PrimitiveIterator<T,T_CONS> extends Iterator<T>
A base type for primitive specializations ofIterator. Specialized subtypes are provided forint,long, anddoublevalues.The specialized subtype default implementations of
Iterator.next()andIterator.forEachRemaining(java.util.function.Consumer)box primitive values to instances of their corresponding wrapper class. Such boxing may offset any advantages gained when using the primitive specializations. To avoid boxing, the corresponding primitive-based methods should be used. For example,PrimitiveIterator.OfInt.nextInt()andPrimitiveIterator.OfInt.forEachRemaining(java.util.function.IntConsumer)should be used in preference toPrimitiveIterator.OfInt.next()andPrimitiveIterator.OfInt.forEachRemaining(java.util.function.Consumer).Iteration of primitive values using boxing-based methods
next()andforEachRemaining(), does not affect the order in which the values, transformed to boxed values, are encountered.- Implementation Note:
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If the boolean system property
org.openjdk.java.util.stream.tripwireis set totruethen diagnostic warnings are reported if boxing of primitive values occur when operating on primitive subtype specializations. - Since:
- 1.8
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Nested Class Summary
Nested Classes Modifier and Type Interface and Description static interfacePrimitiveIterator.OfDoubleAn Iterator specialized fordoublevalues.static interfacePrimitiveIterator.OfIntAn Iterator specialized forintvalues.static interfacePrimitiveIterator.OfLongAn Iterator specialized forlongvalues.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method and Description voidforEachRemaining(T_CONS action)Performs the given action for each remaining element, in the order elements occur when iterating, until all elements have been processed or the action throws an exception.-
Methods inherited from interface java.util.Iterator
forEachRemaining, hasNext, next, remove
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Method Detail
forEachRemaining
void forEachRemaining(T_CONS action)
Performs the given action for each remaining element, in the order elements occur when iterating, until all elements have been processed or the action throws an exception. Errors or runtime exceptions thrown by the action are relayed to the caller.- Parameters:
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action- The action to be performed for each element - Throws:
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NullPointerException- if the specified action is null
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