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java.lang.Objectorg.apache.tools.ant.util.CollectionUtils
public class CollectionUtils
A set of helper methods related to collection manipulation.
| Nested Class Summary | |
|---|---|
static class |
CollectionUtils.EmptyEnumeration<E>
An empty enumeration. |
| Field Summary | |
|---|---|
static java.util.List |
EMPTY_LIST
Deprecated. |
| Constructor Summary | |
|---|---|
CollectionUtils()
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| Method Summary | ||
|---|---|---|
static
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append(java.util.Enumeration<E> e1,
java.util.Enumeration<E> e2)
Append one enumeration to another. |
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static
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asCollection(java.util.Iterator<? extends T> iter)
Returns a collection containing all elements of the iterator. |
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static
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asEnumeration(java.util.Iterator<E> iter)
Adapt the specified Iterator to the Enumeration interface. |
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static
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asIterator(java.util.Enumeration<E> e)
Adapt the specified Enumeration to the Iterator interface. |
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static boolean |
equals(java.util.Dictionary<?,?> d1,
java.util.Dictionary<?,?> d2)
Deprecated. since 1.6.x. |
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static boolean |
equals(java.util.Vector<?> v1,
java.util.Vector<?> v2)
Deprecated. since 1.6.x. |
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static java.lang.String |
flattenToString(java.util.Collection<?> c)
Creates a comma separated list of all values held in the given collection. |
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static int |
frequency(java.util.Collection<?> c,
java.lang.Object o)
Counts how often the given Object occurs in the given collection using equals() for comparison. |
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static
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putAll(java.util.Dictionary<? super K,? super V> m1,
java.util.Dictionary<? extends K,? extends V> m2)
Deprecated. since 1.6.x. |
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| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
@Deprecated public static final java.util.List EMPTY_LIST
| Constructor Detail |
|---|
public CollectionUtils()
| Method Detail |
|---|
public static boolean equals(java.util.Vector<?> v1,
java.util.Vector<?> v2)
v1 - the first vector.v2 - the second vector.
public static boolean equals(java.util.Dictionary<?,?> d1,
java.util.Dictionary<?,?> d2)
Follows the equals contract of Java 2's Map.
d1 - the first directory.d2 - the second directory.
public static java.lang.String flattenToString(java.util.Collection<?> c)
public static <K,V> void putAll(java.util.Dictionary<? super K,? super V> m1,
java.util.Dictionary<? extends K,? extends V> m2)
m1 - the to directory.m2 - the from directory.
public static <E> java.util.Enumeration<E> append(java.util.Enumeration<E> e1,
java.util.Enumeration<E> e2)
e1 - the first enumeration.e2 - the subsequent enumeration.
public static <E> java.util.Enumeration<E> asEnumeration(java.util.Iterator<E> iter)
iter - the Iterator to adapt.
public static <E> java.util.Iterator<E> asIterator(java.util.Enumeration<E> e)
e - the Enumeration to adapt.
public static <T> java.util.Collection<T> asCollection(java.util.Iterator<? extends T> iter)
public static int frequency(java.util.Collection<?> c,
java.lang.Object o)
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