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java.lang.Objectorg.apache.hadoop.util.GenericsUtil
public class GenericsUtil
Contains utility methods for dealing with Java Generics.
| Constructor Summary | |
|---|---|
GenericsUtil()
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| Method Summary | ||
|---|---|---|
static
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getClass(T t)
Returns the Class object (of type Class<T>) of the
argument of type T. |
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static
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toArray(Class<T> c,
List<T> list)
Converts the given List<T> to a an array of
T[]. |
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static
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toArray(List<T> list)
Converts the given List<T> to a an array of
T[]. |
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| Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
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public GenericsUtil()
| Method Detail |
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public static <T> Class<T> getClass(T t)
Class<T>) of the
argument of type T.
T - The type of the argumentt - the object to get it class
Class<T>
public static <T> T[] toArray(Class<T> c,
List<T> list)
List<T> to a an array of
T[].
c - the Class object of the items in the listlist - the list to convertpublic static <T> T[] toArray(List<T> list)
List<T> to a an array of
T[].
list - the list to convert
ArrayIndexOutOfBoundsException - if the list is empty.
Use toArray(Class, List) if the list may be empty.
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