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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_LISTDeprecated. | 
| Constructor Summary | |
|---|---|
| CollectionUtils() | |
| Method Summary | ||
|---|---|---|
| static
 | append(java.util.Enumeration<E> e1,
       java.util.Enumeration<E> e2)Append one enumeration to another. | |
| static
 | asCollection(java.util.Iterator<? extends T> iter)Returns a collection containing all elements of the iterator. | |
| static
 | asEnumeration(java.util.Iterator<E> iter)Adapt the specified Iterator to the Enumeration interface. | |
| static
 | asIterator(java.util.Enumeration<E> e)Adapt the specified Enumeration to the Iterator interface. | |
| static boolean | equals(java.util.Dictionary<?,?> d1,
       java.util.Dictionary<?,?> d2)Deprecated. since 1.6.x. | |
| static boolean | equals(java.util.Vector<?> v1,
       java.util.Vector<?> v2)Deprecated. since 1.6.x. | |
| static java.lang.String | flattenToString(java.util.Collection<?> c)Creates a comma separated list of all values held in the given collection. | |
| 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. | |
| static
 | putAll(java.util.Dictionary<? super K,? super V> m1,
       java.util.Dictionary<? extends K,? extends V> m2)Deprecated. since 1.6.x. | |
| 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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