com.github.ykrasik.jaci.util.string

Class StringUtils

java.lang.Object

com.github.ykrasik.jaci.util.string.StringUtils

public final class StringUtils
extends java.lang.Object

Utilities for working with Strings.

Method Summary

Modifier and Type	Method and Description
static java.lang.String	emptyToNull(java.lang.String str) Transform an empty string into null.
static Opt<java.lang.String>	getNonEmptyString(java.lang.String str) Transforms an all-whitespace string to an absent value.
static <T> java.lang.String	join(java.util.List<T> list, java.lang.String delimiter) Create a string out of the list's elements using the given delimiter.
static java.lang.String	removeLeadingAndTrailingDelimiter(java.lang.String str, java.lang.String delimiter) Removes the leading and trailing delimiter from a string.
static java.lang.String	removeLeadingDelimiter(java.lang.String str, java.lang.String delimiter) Removes the leading delimiter from a string.
static java.lang.String	removeTrailingDelimiter(java.lang.String str, java.lang.String delimiter) Removes the trailing delimiter from a string.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

removeLeadingAndTrailingDelimiter

public static java.lang.String removeLeadingAndTrailingDelimiter(java.lang.String str,
                                                                 java.lang.String delimiter)

Removes the leading and trailing delimiter from a string.

Parameters:

str - String to process.

delimiter - Delimiter to remove.

Returns:

The string with the leading and trailing delimiter removed.

removeTrailingDelimiter

public static java.lang.String removeTrailingDelimiter(java.lang.String str,
                                                       java.lang.String delimiter)

Removes the trailing delimiter from a string.

Parameters:

str - String to process.

delimiter - Delimiter to remove.

Returns:

The string with the trailing delimiter removed.

removeLeadingDelimiter

public static java.lang.String removeLeadingDelimiter(java.lang.String str,
                                                      java.lang.String delimiter)

Removes the leading delimiter from a string.

Parameters:

str - String to process.

delimiter - Delimiter to remove.

Returns:

The string with the leading delimiter removed.

getNonEmptyString

public static Opt<java.lang.String> getNonEmptyString(java.lang.String str)

Transforms an all-whitespace string to an absent value.

Parameters:

str - String to check.

Returns:

A present containing the trimmed string, if the string had any non-whitespace character, or an absent value otherwise.

emptyToNull

public static java.lang.String emptyToNull(java.lang.String str)

Transform an empty string into null.

Parameters:

str - String to check.

Returns:

The string if it was non-empty, or null otherwise.

join

public static <T> java.lang.String join(java.util.List<T> list,
                                        java.lang.String delimiter)

Create a string out of the list's elements using the given delimiter.

Type Parameters:

T - Type of elements in the list.

Parameters:

list - List to create a string from.

delimiter - Delimiter to use between elements.

Returns:

A string created from the given list's elements, delimited by the given delimiter.