Class CollectionUtils


  • public class CollectionUtils
    extends java.lang.Object
    • Constructor Summary

      Constructors 
      Constructor Description
      CollectionUtils()  
    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static java.util.List<java.lang.String> asStringList​(java.lang.Object... elements)  
      static <T> java.util.List<T> collectOptional​(java.util.Optional<T>... optionals)  
      static boolean containsAny​(java.util.Collection<?> coll1, java.util.Collection<?> coll2)  
      static <T> java.util.List<T> flatten​(java.util.List<java.util.List<T>> lists)  
      static <T> java.util.List<T> immutableList​(T... elements)  
      static <T> java.util.Set<T> intersection​(java.util.Collection<T> c1, java.util.Collection<T> c2)  
      static <T> boolean isEmpty​(java.util.Collection<T> c)  
      static <T extends java.lang.Comparable<? super T>>
      java.util.List<T>
      toSorted​(java.util.Collection<T> c)  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • CollectionUtils

        public CollectionUtils()
    • Method Detail

      • isEmpty

        public static <T> boolean isEmpty​(java.util.Collection<T> c)
      • immutableList

        public static <T> java.util.List<T> immutableList​(T... elements)
      • collectOptional

        public static <T> java.util.List<T> collectOptional​(java.util.Optional<T>... optionals)
      • asStringList

        public static java.util.List<java.lang.String> asStringList​(java.lang.Object... elements)
      • flatten

        public static <T> java.util.List<T> flatten​(java.util.List<java.util.List<T>> lists)
      • toSorted

        public static <T extends java.lang.Comparable<? super T>> java.util.List<T> toSorted​(java.util.Collection<T> c)
      • containsAny

        public static boolean containsAny​(java.util.Collection<?> coll1,
                                          java.util.Collection<?> coll2)
      • intersection

        public static <T> java.util.Set<T> intersection​(java.util.Collection<T> c1,
                                                        java.util.Collection<T> c2)