Interface PrimitiveIterator<T,T_CONS>
- Type Parameters:
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
Iterator. Specialized
subtypes are provided for int, long, and
double values.
The specialized subtype default implementations of Iterator.next()
and Iterator.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() and
PrimitiveIterator.OfInt.forEachRemaining(java.util.function.IntConsumer)
should be used in preference to PrimitiveIterator.OfInt.next() and
PrimitiveIterator.OfInt.forEachRemaining(java.util.function.Consumer).
Iteration of primitive values using boxing-based methods
next() and
forEachRemaining(),
does not affect the order in which the values, transformed to boxed values,
are encountered.
- Implementation Note:
- 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
-
Nested Class Summary
Nested ClassesModifier and TypeInterfaceDescriptionstatic interfaceAn Iterator specialized fordoublevalues.static interfaceAn Iterator specialized forintvalues.static interfaceAn Iterator specialized forlongvalues. -
Method Summary
Modifier and TypeMethodDescriptionvoidforEachRemaining(T_CONS action) Performs the given action for each remaining element until all elements have been processed or the action throws an exception.Methods declared in interface java.util.Iterator
forEachRemaining, hasNext, next, remove
-
Method Details
-
forEachRemaining
Performs the given action for each remaining element until all elements have been processed or the action throws an exception. Actions are performed in the order of iteration, if that order is specified. Exceptions thrown by the action are relayed to the caller.The behavior of an iterator is unspecified if the action modifies the source of elements in any way (even by calling the
removemethod or other mutator methods ofIteratorsubtypes), unless an overriding class has specified a concurrent modification policy.Subsequent behavior of an iterator is unspecified if the action throws an exception.
- Parameters:
action- The action to be performed for each element- Throws:
NullPointerException- if the specified action is null
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