Class UnmodifiableIterator<E>
- java.lang.Object
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- org.apache.openjpa.lib.util.collections.UnmodifiableIterator<E>
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- All Implemented Interfaces:
java.util.Iterator<E>
,Unmodifiable
public final class UnmodifiableIterator<E> extends java.lang.Object implements java.util.Iterator<E>, Unmodifiable
Decorates an iterator such that it cannot be modified.Attempts to modify it will result in an UnsupportedOperationException.
- Since:
- 3.0
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
hasNext()
E
next()
void
remove()
static <E> java.util.Iterator<E>
unmodifiableIterator(java.util.Iterator<? extends E> iterator)
Decorates the specified iterator such that it cannot be modified.
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Method Detail
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unmodifiableIterator
public static <E> java.util.Iterator<E> unmodifiableIterator(java.util.Iterator<? extends E> iterator)
Decorates the specified iterator such that it cannot be modified.If the iterator is already unmodifiable it is returned directly.
- Type Parameters:
E
- the element type- Parameters:
iterator
- the iterator to decorate- Returns:
- a new unmodifiable iterator
- Throws:
java.lang.NullPointerException
- if the iterator is null
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hasNext
public boolean hasNext()
- Specified by:
hasNext
in interfacejava.util.Iterator<E>
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remove
public void remove()
- Specified by:
remove
in interfacejava.util.Iterator<E>
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