Index

A C E F G H I M N O P Q R S T U
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A

ArrayHelper - Class in io.github.torand.javacommons.collection

Helper functions for arrays

asList(Iterable<T>) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Creates a list of specified iterable items.

asList(T...) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Creates a list of specified item array.

asNonEmptyList(T, T...) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Creates a list of at least one, possibly multiple items.

C

capitalize(String) - Static method in class io.github.torand.javacommons.lang.StringHelper

Returns specified string with upper case first letter.

castTo(Class<T>) - Static method in class io.github.torand.javacommons.functional.Functions

Returns a function casting the input object to the specified class.

CollectionHelper - Class in io.github.torand.javacommons.collection

Helper functions for collections

concat(Iterable<T>, Iterable<T>) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Concatenates the specified iterables into a single list.

concat(Iterable<T>, T...) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Concatenates the elements of the specified iterable and array into a single list.

concatStream(Iterable<T>, Iterable<T>) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Creates a concatenated stream from the elements in the specified iterables.

containsAny(Iterable<T>, Predicate<T>) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Tests whether the specified iterable contains an element satisfying a predicate.

containsOneOf(Iterable<T>, T...) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Tests whether the specified iterable contains one of the specified items.

E

Exceptions - Class in io.github.torand.javacommons.lang

Provides factory methods to create exception objects with customized messages.

F

Functions - Class in io.github.torand.javacommons.functional

General purpose functions for streams.

G

generate(String, int) - Static method in class io.github.torand.javacommons.lang.StringHelper

Creates a string by concatenating a substring multiple times.

generate(String, int, String) - Static method in class io.github.torand.javacommons.lang.StringHelper

Creates a string by concatenating a substring multiple times delimited by a delimiter substring.

H

headOf(Iterable<T>) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Returns the first element of the specified iterable.

I

illegalArgumentException(String, Object...) - Static method in class io.github.torand.javacommons.lang.Exceptions

Creates a supplier of IllegalArgumentException with a customized message.

illegalStateException(String, Object...) - Static method in class io.github.torand.javacommons.lang.Exceptions

Creates a supplier of IllegalStateException with a customized message.

instanceOf(Class<? extends T>) - Static method in class io.github.torand.javacommons.functional.Predicates

Creates a predicate testing whether an object is an instance of a specified class.

io.github.torand.javacommons - package io.github.torand.javacommons

This is the root package of the Java Commons library.

io.github.torand.javacommons.collection - package io.github.torand.javacommons.collection

Provides classes for collection handling.

io.github.torand.javacommons.contract - package io.github.torand.javacommons.contract

Provides classes and interfaces for "Design by Contract" style coding.

io.github.torand.javacommons.functional - package io.github.torand.javacommons.functional

Provides classes and interfaces to extend and improve the functional aspects of Java.

io.github.torand.javacommons.lang - package io.github.torand.javacommons.lang

Provides classes to enhance basic language features.

isBlank(String) - Static method in class io.github.torand.javacommons.lang.StringHelper

Tests whether the specified string is null or contains no characters.

isEmpty(int[]) - Static method in class io.github.torand.javacommons.collection.ArrayHelper

Returns whether the specified 'int' array is null or contains no elements.

isEmpty(long[]) - Static method in class io.github.torand.javacommons.collection.ArrayHelper

Returns whether the specified 'long' array is null or contains no elements.

isEmpty(Collection<?>) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Returns whether the specified collection is null or contains no elements.

isEmpty(Map<?, ?>) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Returns whether the specified map is null or contains no elements.

isEmpty(T[]) - Static method in class io.github.torand.javacommons.collection.ArrayHelper

Returns whether the specified object array is null or contains no elements.

M

mapSafely(T, Function<T, U>) - Static method in class io.github.torand.javacommons.functional.Optionals

Executes the specified mapping function on the value if it is not null.

N

nonBlank(String) - Static method in class io.github.torand.javacommons.lang.StringHelper

Tests whether the specified string is not null and contains at least one character.

nonEmpty(int[]) - Static method in class io.github.torand.javacommons.collection.ArrayHelper

Returns whether the specified 'int' array contains at least one element.

nonEmpty(long[]) - Static method in class io.github.torand.javacommons.collection.ArrayHelper

Returns whether the specified 'long' array contains at least one element.

nonEmpty(Collection<?>) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Returns whether the specified collection contains at least one element.

nonEmpty(Map<?, ?>) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Returns whether the specified map contains at least one element.

nonEmpty(T[]) - Static method in class io.github.torand.javacommons.collection.ArrayHelper

Returns whether the specified object array contains at least one element.

O

Optionals - Class in io.github.torand.javacommons.functional

General purpose utilities for optionals.

P

precondition(Requirement, String, Object...) - Static method in class io.github.torand.javacommons.contract.Requires

Checks that the specified requirement is fulfilled.

Predicates - Class in io.github.torand.javacommons.functional

General purpose predicates for streams.

Q

quote(String) - Static method in class io.github.torand.javacommons.lang.StringHelper

Returns the specified string enclosed by double quotes.

quoteAll(List<String>) - Static method in class io.github.torand.javacommons.lang.StringHelper

Returns specified list with all strings quoted.

quoteIfString(Object) - Static method in class io.github.torand.javacommons.lang.StringHelper

If the specified object is a string, returns it enclosed by double quotes.

R

require(Requirement, String, Object...) - Static method in class io.github.torand.javacommons.contract.Requires

Checks that the specified requirement is fulfilled.

Requirement - Interface in io.github.torand.javacommons.contract

Defines a requirement to be fulfilled in a Requires statement.

requireNonBlank(String, String, Object...) - Static method in class io.github.torand.javacommons.contract.Requires

Checks that the specified string is not null and contains at least one character.

requireNonEmpty(int[], String, Object...) - Static method in class io.github.torand.javacommons.contract.Requires

Checks that the specified 'int' array is not null and contains at least one element.

requireNonEmpty(long[], String, Object...) - Static method in class io.github.torand.javacommons.contract.Requires

Checks that the specified 'long' array is not null and contains at least one element.

requireNonEmpty(Optional<T>, String, Object...) - Static method in class io.github.torand.javacommons.contract.Requires

Checks that the specified optional object is not null and is not empty.

requireNonEmpty(T[], String, Object...) - Static method in class io.github.torand.javacommons.contract.Requires

Checks that the specified object array is not null and contains at least one element.

requireNonEmpty(T, String, Object...) - Static method in class io.github.torand.javacommons.contract.Requires

Checks that the specified object collection is not null and contains at least one element.

Requires - Class in io.github.torand.javacommons.contract

Provides factory methods to test the state of variables.

runtimeException(String, Object...) - Static method in class io.github.torand.javacommons.lang.Exceptions

Creates a supplier of RuntimeException with a customized message.

S

streamSafely(Iterable<T>) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Creates a stream from the elements in the specified iterable.

streamSafely(Iterator<T>) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Creates a stream from the elements in the specified iterator.

streamSafely(T...) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Creates a stream from the elements in the specified array.

StringHelper - Class in io.github.torand.javacommons.lang

Provides general purpose string utilities.

stripHead(String, int) - Static method in class io.github.torand.javacommons.lang.StringHelper

Removes a specific number of leading characters from a string.

stripTail(String, int) - Static method in class io.github.torand.javacommons.lang.StringHelper

Removes a specific number of trailing characters from a string.

T

tailOf(Iterable<T>) - Static method in class io.github.torand.javacommons.collection.CollectionHelper

Returns the last element of the specified iterable.

test() - Method in interface io.github.torand.javacommons.contract.Requirement

Tests the requirement.

U

uncapitalize(String) - Static method in class io.github.torand.javacommons.lang.StringHelper

Returns specified string with lower case first letter.

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