Converts a Boolean to a boolean handling {@code null}. <pre> BooleanUtils.toBooleanDefaultIfNull(Boolean.TRUE, false) = true BooleanUtils.toBool

Returns the fully qualified name for the resource with name {@code resourceName} relative to the given context. <p> Note that this method does not ch

Returns the fully qualified path for the resource with name {@code resourceName} relative to the given context. <p> Note that this method does not ch

Converts a {@link Date} to a {@link LocalDateTime}. @param date the Date to convert, not null. @return a new LocalDateTime. @since 3.19.0

Converts an Instant to milliseconds since that Instant bound to a {@code long} without throwing {@link ArithmeticException}. <ul> <li>If the duration

This method uses reflection to build a suitable {@code toString} value which includes static fields. <p> It uses {@code AccessibleObject.setAccessible

{@inheritDoc}

Converts a String to upper case as per {@link String#toUpperCase()}. <p> A {@code null} input String returns {@code null}. </p> <pre> StringUtils.up

Converts UUID into an array of byte using the default (little-endian, LSB0) byte and bit ordering. @param src the UUID to convert. @param dst t

Specify lower bounds of the wildcard type to build. @param bounds to set. @return {@code this} instance.

Performs a logical <strong>XOR</strong> of this bit set with the bit set argument. This bit set is modified so that a bit in it has the value {@code t

Mapping to escape the basic XML and HTML character entities. Namely: {@code " & < >} @return the mapping table.

Helps test reflection classes. @param string An input string. @return The given string or "<null>".

Adds an event listener to the specified source. This looks for an "add" method corresponding to the event type (addActionListener, for example). @pa

Adds a number of months to a date returning a new object. The original {@link Date} is unchanged. @param date the date, not null. @param amount the

Adds a token to a list, paying attention to the parameters we've set. @param list the list to add to. @param tok the token to add.

Returns whether all elements of this stream match the provided predicate. May not evaluate the predicate on all elements if not necessary for determin

Produces a {@link BiFunction} for a given a <em>function</em> Method. You call the BiFunction with two arguments: (1) the object receiving the method

Produces a {@link FailableBiConsumer} for a given <em>consumer</em> Method. For example, a classic setter method (as opposed to a fluent setter). You

Produces a {@link FailableBiFunction} for a given a <em>function</em> Method. You call the FailableBiFunction with two arguments: (1) the object recei

Produces a {@link FailableFunction} for a given a <em>supplier</em> Method. You call the Function with one argument: the object receiving the method c

Throws IllegalStateException if this stream is already terminated. @throws IllegalStateException if this stream is already terminated.

Throws IllegalStateException if this stream is already terminated. @throws IllegalStateException if this stream is already terminated.

See "Effective Java" under "Consider Implementing Comparable". @param x an object to compare @param y an object to compare @param z an object to comp

@param coll the collection to check

Obtains an unmodifiable set of installed locales. <p> This method is a wrapper around {@link Locale#getAvailableLocales()}. It is more efficient, as

Builds a {@link DiffResult} based on the differences appended to this builder. @return a {@link DiffResult} containing the differences between the tw

Constructs a new {@link Builder} instance. @return a new {@link Builder} instance.

Creates a new builder. @param <T> The type of object to build. @return a new builder. @since 3.14.0

Tests whether a child initializer has been executed. Optionally the expected executor service can be checked, too. @param child the child initializer

Checks if tokenization has been done, and if not then do it.

Clears the cache.

Compares this mutable to another in ascending order. @param other the other mutable to compare to, not null @return negative if this is less, zero i

Gets an implementation of {@link Future} that is immediately done and returns the specified constant value. <p> This can be useful to return a simple

Creates a {@link Float} from a {@link String}. <p> Returns {@code null} if the string is {@code null}. </p> @param str a {@link String} to convert,

Checks if a concurrent map contains a key and creates a corresponding value if not. This method first checks the presence of the key in the given map.

Escapes the characters in a {@link String} using HTML entities. <p> For example: </p> <p>{@code "bread" &amp; "butter"}</p> becomes: <p> {@code &amp;

Escapes the characters in a {@link String} using Json String rules. <p>Escapes any values it finds into their Json String form. Deals correctly with q

Returns the estimated length of the result. @return the estimated length of the result.

Invokes a double supplier, and returns the result. @param supplier The double supplier to invoke. @param <E> The type of checked exception, which the

Supplies an int. @return a result @throws E if the supplier fails

Supplies a long. @return a result @throws E if the supplier fails

Gets a new tokenizer instance which parses Comma Separated Value strings initializing it with the given input. The default for CSV processing will be

Gets the comparator being used to determine if objects are within the range. <p>Natural ordering uses an internal comparator implementation, thus thi

{@inheritDoc}

Gets the enum for the class in a system property, returning {@code defaultEnum} if not found. <p> This method differs from {@link Enum#valueOf} in th

Gets the field names that should be excluded from the diff. @return the excludeFieldNames. @since 3.13.0

Gets the executor service used by this instance. @return the executor service.

Gets the field separator text. @return the current field separator text.

Gets all fields of the given class and its parents (if any) that are annotated with the given annotation. @param cls the {@link Class} to

Constructs a Strategy that parses a Text field @param field The Calendar field @param definingCalendar The calendar to obtain the short an

Gets the priority of the threads created by this factory. Result can be {@code null} if no priority was specified. @return the priority for newly cre

Gets the proper whole part of the fraction. <p> An improper fraction 7/4 can be resolved into a proper one, 1 3/4. This method returns the 1 from the

Gets the registry of objects being traversed by the reflection methods in the current thread. @return Set the registry of objects being traversed

Gets the registry of objects being traversed by the {@code reflectionToString} methods in the current thread. @return Set the registry of objects bei

Gets a short message summarizing the root cause exception. <p> The message returned is of the form {ClassNameWithoutPackage}: {ThrowableMessage} </p>

Gets the {@link ToStringStyle} being used. @return the {@link ToStringStyle} being used @since 2.0

Gets the system thread group (sometimes also referred as "root thread group"). <p> This method returns null if this thread has died (been stopped). </

Gets a new tokenizer instance which parses Tab Separated Value strings. The default for CSV processing will be trim whitespace from both ends (which c

Gets the {@link UncaughtExceptionHandler} for the threads created by this factory. Result can be {@code null} if no handler was provided. @return the

Delegates to {@link Field#get(Object)} and rethrows {@link IllegalAccessException} as {@link IllegalArgumentException}. @param field The receiver of

Gets the current value from the system properties map for {@value #USER_HOME}. <p> Returns {@code null} if the property cannot be read due to a {@link

Handles the specified {@link ExecutionException} and transforms it into a runtime exception. This method works exactly like {@link #handleCause(Execut

Returns an upper case hexadecimal {@link String} for the given character. @param codePoint The code point to convert. @return An upper case hexadecim

Increments the value. @since 2.2

Worker method for the {@code indexOfType} methods. @param throwable the throwable to inspect, may be null. @param type the type to search for, s

Returns a set with the names of all {@link BackgroundInitializer} objects managed by the {@link MultiBackgroundInitializer}. @return an (unmodifiable

Used to invert an escape array into an unescape array. @param array String[][] to be inverted. @return String[][] inverted array.

Tests whether a given array can safely be accessed at the given index. <pre> ArrayUtils.isArrayIndexValid(null, 0) = false ArrayUtils.isArrayIn

Tests if {@link Processor} is type of Intel Itanium. @return {@code true}. if {@link Processor} is {@link Type#IA_64}, else {@code false}.

Tests whether StopWatch is stopped. this StopWatch which's not yet started and explicitly stopped StopWatch is considered as stopped. @return boolean

Checks if the specified type is permitted as an annotation member. <p>The Java language specification only permits certain types to be used in annota

Tests if {@link Processor} is type of x86. @return {@code true}, if {@link Processor} is {@link Type#X86}, else {@code false}.

Utility method for {@link #createNumber(java.lang.String)}. <p> This will check if the magnitude of the number is zero by checking if there are only

Minimizes the capacity to the actual length of the string. @return {@code this} instance.

Gets the NOP singleton. @param <T> Consumed type. @param <R> Return type. @param <E> The type of thrown exception or error. @return The NOP singleton

Compares two objects for inequality, where either one or both objects may be {@code null}. <pre> ObjectUtils.notEqual(null, null) =

{@inheritDoc}

Creates an immutable pair of two non-null objects inferring the generic types. @param <L> The left element type. @param <R> The right element type. @

Constructs a {@link JavaUnicodeEscaper} outside of the specified values (exclusive). @param codePointLow below which to escape. @param cod

Gets the previous token from the String. @return the previous sequential token, or null when no more tokens are found.

{@inheritDoc}

Throws the given (usually checked) exception without adding the exception to the throws clause of the calling method. This method prevents throws clau