Java Utililty Methods Collection Check

List of utility methods to do Collection Check

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Description

The list of methods to do Collection Check are organized into topic(s).

Method

booleanisCollectionOrArray(final Class cls)
Returns true if the supplied class is a collection or an array. 
return (cls.isArray() && byte[].class != cls) || Collection.class.isAssignableFrom(cls);
booleanisCollectionOrArray(final Object obj)
Return true for objects that are collections or arrays (i.e. 
final Class<? extends Object> cls = obj.getClass();
return Collection.class.isAssignableFrom(cls) || cls.isArray();
booleanisCollectionOrArrayType(Class typeToCheck)
is Collection Or Array Type 
return typeToCheck != null && (typeToCheck.isArray() || Collection.class.isAssignableFrom(typeToCheck));
booleanisCollectionType(Class aClass)
Determines if the given class is a Collection type. 
return Collection.class.isAssignableFrom(aClass);
booleanisCollectionType(Class type)
Returns true if type is a collection type. 
return List.class.isAssignableFrom(type) || Set.class.isAssignableFrom(type);
booleanisCollectionType(Class cls)
is Collection Type 
if (cls.isArray()) {
    return true;
} else if (List.class.isAssignableFrom(cls)) {
    return true;
} else if (Set.class.isAssignableFrom(cls)) {
    return true;
} else if (Map.class.isAssignableFrom(cls)) {
    return true;
...
booleanisCollectionType(Class cls)
Checks if provided class represents an array class or is implementation of java.util.Collection . 
return cls != null && (cls.isArray() || Collection.class.isAssignableFrom(cls));
booleanisCollectionType(Class type)
is Collection Type 
return Collection.class.isAssignableFrom(type) || Map.class.isAssignableFrom(type);
booleanisCollectionType(final Class cls)
is Collection Type 
return java.util.Collection.class.isAssignableFrom(cls);
booleanisCollectionType(Object obj)
is Collection Type 
return (obj.getClass().isArray() || (obj instanceof Collection) || (obj instanceof Hashtable)
        || (obj instanceof HashMap) || (obj instanceof HashSet) || (obj instanceof List)
        || (obj instanceof AbstractMap));