querymethods.query.util

类 CollectionUtils

java.lang.Object

querymethods.query.util.CollectionUtils

public abstract class CollectionUtils
extends java.lang.Object

Miscellaneous collection utility methods. Mainly for internal use within the framework.

从以下版本开始:

1.1.3

作者:

Juergen Hoeller, Rob Harrop, Arjen Poutsma

构造器概要

构造器

构造器和说明
CollectionUtils()

方法概要

限定符和类型	方法和说明
static boolean	isEmpty(java.util.Collection<?> collection) Return true if the supplied Collection is null or empty.
static boolean	isEmpty(java.util.Map<?,?> map) Return true if the supplied Map is null or empty.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

CollectionUtils

public CollectionUtils()

方法详细资料

isEmpty

public static boolean isEmpty(java.util.Collection<?> collection)

Return true if the supplied Collection is null or empty. Otherwise, return false.

参数:

collection - the Collection to check

返回:

whether the given Collection is empty

isEmpty

public static boolean isEmpty(java.util.Map<?,?> map)

Return true if the supplied Map is null or empty. Otherwise, return false.

参数:

map - the Map to check

返回:

whether the given Map is empty