it.riccardotraverso.java.lang

Class StringUtils

java.lang.Object

it.riccardotraverso.java.lang.StringUtils

public class StringUtils
extends java.lang.Object

Method Summary

Methods

Modifier and Type	Method and Description
static java.lang.String	capitalize(java.lang.String s) Capitalizes the very first character of a given string.
static java.lang.String	emptyAsNull(java.lang.String s) Returns null when s is the empty string, or s as is otherwise.
static boolean	isBlank(java.lang.String s) Returns true iff s is either null or the empty string.
static <T> java.lang.String	join(java.lang.Iterable<T> coll, java.lang.String separator) Joins into a string an iterable collection of objects by using a separator.
static java.lang.String	join(java.lang.Object[] arr, java.lang.String separator) Joins into a string an array of objects by using a separator.
static java.lang.String	nullAsEmpty(java.lang.String s) Returns the empty string when s is null, or s as is otherwise.
static java.lang.String	replicate(int n, char c) Generates a string composed of just n consecutive occurrences of char c.
static java.lang.String	replicate(int n, java.lang.String s) Generates a string composed of n consecutive occurrences of the string s.

Methods inherited from class java.lang.Object

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

Method Detail

replicate

public static java.lang.String replicate(int n,
                         char c)

Generates a string composed of just n consecutive occurrences of char c.

Parameters:

n - the number of repetitions of c

c - the character to be replicated

replicate

public static java.lang.String replicate(int n,
                         java.lang.String s)

Generates a string composed of n consecutive occurrences of the string s.

Parameters:

n - the number of repetitions of s

s - the string to be repeated

isBlank

public static boolean isBlank(java.lang.String s)

Returns true iff s is either null or the empty string.

Parameters:

s - the string to be tested

nullAsEmpty

public static java.lang.String nullAsEmpty(java.lang.String s)

Returns the empty string when s is null, or s as is otherwise.

emptyAsNull

public static java.lang.String emptyAsNull(java.lang.String s)

Returns null when s is the empty string, or s as is otherwise.

join

public static java.lang.String join(java.lang.Object[] arr,
                    java.lang.String separator)

Joins into a string an array of objects by using a separator.

Parameters:

arr - the array of elements to be converted in strings and joined together

separator - the separator to put in between any two adjacent strings

join

public static <T> java.lang.String join(java.lang.Iterable<T> coll,
                        java.lang.String separator)

Joins into a string an iterable collection of objects by using a separator.

Parameters:

coll - the collection of elements to be converted in strings and joined together

separator - the separator to put in between any two adjacent strings*

capitalize

public static java.lang.String capitalize(java.lang.String s)

Capitalizes the very first character of a given string.

Parameters:

s - the string to be capitalized