Method Detail

• deepCheckNotNull

  public static <T> T[] deepCheckNotNull​(String text,
                                         T... varargs)

  Check that the given varargs is not null and does not contain elements null elements. If it is, throws NullPointerException. Otherwise, returns the argument.

• checkNotNullWithIAE

  public static <T> T checkNotNullWithIAE​(T arg,
                                          String paramName)
                                   throws IllegalArgumentException

  Checks that the given argument is not null. If it is, throws IllegalArgumentException. Otherwise, returns the argument.

  Throws:

  IllegalArgumentException

• checkNotNullArrayParam

  public static <T> T checkNotNullArrayParam​(T value,
                                             int index,
                                             String name)
                                      throws IllegalArgumentException

  Checks that the given argument is not null. If it is, throws IllegalArgumentException. Otherwise, returns the argument.

  Type Parameters:

  T - type of the given argument value.

  Parameters:

  name - of the parameter, belongs to the exception message.

  index - of the array, belongs to the exception message.

  value - to check.

  Returns:

  the given argument value.

  Throws:

  IllegalArgumentException - if value is null.

• checkPositive

  public static int checkPositive​(int i,
                                  String name)

  Checks that the given argument is strictly positive. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

• checkPositive

  public static long checkPositive​(long l,
                                   String name)

  Checks that the given argument is strictly positive. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

• checkPositive

  public static double checkPositive​(double d,
                                     String name)

  Checks that the given argument is strictly positive. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

• checkPositive

  public static float checkPositive​(float f,
                                    String name)

  Checks that the given argument is strictly positive. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

• checkPositiveOrZero

  public static int checkPositiveOrZero​(int i,
                                        String name)

  Checks that the given argument is positive or zero. If it is not , throws IllegalArgumentException. Otherwise, returns the argument.

• checkPositiveOrZero

  public static long checkPositiveOrZero​(long l,
                                         String name)

  Checks that the given argument is positive or zero. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

• checkPositiveOrZero

  public static double checkPositiveOrZero​(double d,
                                           String name)

  Checks that the given argument is positive or zero. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

• checkPositiveOrZero

  public static float checkPositiveOrZero​(float f,
                                          String name)

  Checks that the given argument is positive or zero. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

• checkInRange

  public static int checkInRange​(int i,
                                 int start,
                                 int end,
                                 String name)

  Checks that the given argument is in range. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

• checkInRange

  public static long checkInRange​(long l,
                                  long start,
                                  long end,
                                  String name)

  Checks that the given argument is in range. If it is not, throws IllegalArgumentException. Otherwise, returns the argument.

• checkNonEmpty

  public static <T> T[] checkNonEmpty​(T[] array,
                                      String name)

  Checks that the given argument is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the argument.

• checkNonEmpty

  public static byte[] checkNonEmpty​(byte[] array,
                                     String name)

  Checks that the given argument is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the argument.

• checkNonEmpty

  public static char[] checkNonEmpty​(char[] array,
                                     String name)

  Checks that the given argument is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the argument.

• checkNonEmpty

  public static <T extends Collection<?>> T checkNonEmpty​(T collection,
                                                          String name)

  Checks that the given argument is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the argument.

• checkNonEmpty

  public static String checkNonEmpty​(String value,
                                     String name)

  Checks that the given argument is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the argument.

• checkNonEmpty

  public static <K,​V,​T extends Map<K,​V>> T checkNonEmpty​(T value,
                                                                           String name)

  Checks that the given argument is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the argument.

• checkNonEmpty

  public static CharSequence checkNonEmpty​(CharSequence value,
                                           String name)

  Checks that the given argument is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the argument.

• checkNonEmptyAfterTrim

  public static String checkNonEmptyAfterTrim​(String value,
                                              String name)

  Trims the given argument and checks whether it is neither null nor empty. If it is, throws NullPointerException or IllegalArgumentException. Otherwise, returns the trimmed argument.

  Parameters:

  value - to trim and check.

  name - of the parameter.

  Returns:

  the trimmed (not the original) value.

  Throws:

  NullPointerException - if value is null.

  IllegalArgumentException - if the trimmed value is empty.

• intValue

  public static int intValue​(Integer wrapper,
                             int defaultValue)

  Resolves a possibly null Integer to a primitive int, using a default value.

  Parameters:

  wrapper - the wrapper

  defaultValue - the default value

  Returns:

  the primitive value

• longValue

  public static long longValue​(Long wrapper,
                               long defaultValue)

  Resolves a possibly null Long to a primitive long, using a default value.

  Parameters:

  wrapper - the wrapper

  defaultValue - the default value

  Returns:

  the primitive value