Field Detail

• EMPTY_BITSET

  public static final java.util.BitSet EMPTY_BITSET

  The empty BitSet.

• FULLY_QUALIFIED_NAMES

  public static final boolean FULLY_QUALIFIED_NAMES

  Generate strings with fully qualified names or not

  See Also:

  Constant Field Values

Constructor Detail

• Util

  public Util()

Method Detail

• str

  public static java.lang.String str​(java.lang.Throwable thrown)
                              throws java.lang.IllegalArgumentException

  Get a String representation of a Throwable.

  Throws:

  java.lang.IllegalArgumentException - if thrown == null

• filterByType

  public static <S,​T> java.util.Set<T> filterByType​(java.lang.Iterable<S> c,
                                                          java.lang.Class<T> klass)

  Return those elements of c that are assignable to klass.

• forSome

  public static <T> boolean forSome​(java.util.Collection<T> c,
                                    java.util.function.Predicate<T> p)
                             throws java.lang.IllegalArgumentException

  Test whether some element of the given Collection satisfies the given Predicate.

  Throws:

  java.lang.IllegalArgumentException - if c == null

• find

  public static <T> T find​(java.util.Collection<T> c,
                           java.util.function.Predicate<T> p)
                    throws java.lang.IllegalArgumentException

  Test whether some element of the given Collection satisfies the given Predicate.

  Returns:

  The first element satisfying the predicate; otherwise null.

  Throws:

  java.lang.IllegalArgumentException - if c == null

• forAll

  public static <T> boolean forAll​(java.util.Collection<T> c,
                                   java.util.function.Predicate<T> p)
                            throws java.lang.NullPointerException

  Test whether all elements of the given Collection satisfy the given Predicate.

  Throws:

  java.lang.NullPointerException - if c == null

• doForAll

  public static <T> void doForAll​(java.util.Collection<T> c,
                                  ObjectVisitor<T> v)
                           throws java.lang.IllegalArgumentException

  Perform an action for all elements in a collection.

  Parameters:

  c - the collection

  v - the visitor defining the action

  Throws:

  java.lang.IllegalArgumentException - if c == null

• map

  public static <T,​U> java.util.List<U> map​(java.util.List<T> srcList,
                                                  java.util.function.Function<T,​U> f)
                                           throws java.lang.IllegalArgumentException

  Map a list: generate a new list with each element mapped. The new list is always an ArrayList; it would have been more precise to use reflection to create a list of the same type as 'srcList', but reflection works really slowly in some implementations, so it's best to avoid it.

  Throws:

  java.lang.IllegalArgumentException - if srcList == null

• mapToSet

  public static <T,​U> java.util.Set<U> mapToSet​(java.util.Collection<T> srcSet,
                                                      java.util.function.Function<T,​U> f)
                                               throws java.lang.IllegalArgumentException

  Map a set: generate a new set with each element mapped. The new set is always a HashSet; it would have been more precise to use reflection to create a set of the same type as 'srcSet', but reflection works really slowly in some implementations, so it's best to avoid it.

  Throws:

  java.lang.IllegalArgumentException - if srcSet == null

• realloc

  public static int[] realloc​(int[] data,
                              int newSize)
                       throws java.lang.IllegalArgumentException

  Throws:

  java.lang.IllegalArgumentException

• objectFieldsToString

  public static java.lang.String objectFieldsToString​(java.lang.Object obj)
                                               throws java.lang.IllegalArgumentException

  Write object fields to string

  Throws:

  java.lang.IllegalArgumentException - if obj == null

• removePackageName

  public static java.lang.String removePackageName​(java.lang.String fully_qualified_name_)

  Remove the package name from a fully qualified class name

• intersecting

  public static <T> boolean intersecting​(java.util.Set<T> s1,
                                         java.util.Set<T> s2)

  checks if two sets have a non-empty intersection

  Returns:

  true if the sets intersect; false otherwise

• topLevelTypeString

  public static java.lang.String topLevelTypeString​(java.lang.String typeStr)
                                             throws java.lang.IllegalArgumentException

  given the name of a class C, returns the name of the top-most enclosing class of class C. For example, given A$B$C, the method returns A

  Returns:

  String name of top-most enclosing class

  Throws:

  java.lang.IllegalArgumentException - if typeStr == null

• addIfNotNull

  public static <T> void addIfNotNull​(T val,
                                      java.util.Collection<T> vals)

• getUsedMemory

  public static long getUsedMemory()

  Returns:

  the amount of memory currently being used, in bytes. Often inaccurate, but there's no better thing to do from within the JVM.