de.unkrig.commons.lang

Class StringUtil

java.lang.Object

de.unkrig.commons.lang.StringUtil

public final class StringUtil
extends java.lang.Object

Various java.lang.String-related utility methods.

Field Summary

Fields

Modifier and Type	Field and Description
static Predicate<java.lang.CharSequence>	IS_BLANK A predicate that evaluates its subject with isBlank(CharSequence).

Method Summary

Modifier and Type	Method and Description
static java.lang.Iterable<java.lang.Character>	asIterable(java.lang.CharSequence subject) Wraps a char sequence as an iterable.
static int	compareTo(java.lang.CharSequence cs1, java.lang.CharSequence cs2) Naturally, CharSequence does not extend Comparable.
static boolean	equals(java.lang.CharSequence cs1, java.lang.CharSequence cs2) Naturally, CharSequence does not refine Object.equals(Object).
static java.lang.String	firstLetterToLowerCase(java.lang.String s)
static java.lang.String	firstLetterToUpperCase(java.lang.String s)
static boolean	isBlank(java.lang.CharSequence cs)
static java.util.Iterator<java.lang.Character>	iterator(java.lang.CharSequence subject) Returns an iterator that produces the characters of the subject, from index 0 through index subject.length() - 1.
static java.lang.String	join(java.util.Collection<? extends java.lang.Object> elements, java.lang.String glue) Converts all elements to string and concatenates these, separated by the glue.
static java.lang.String	lessTrailingLineSeparators(java.lang.String s)
static java.lang.String	repeat(int n, char c)
static java.lang.String	repeat(int n, java.lang.String s)
static java.util.Iterator<java.lang.Character>	reverseIterator(java.lang.CharSequence subject) Returns an iterator that produces the characters of the subject in reverse order, from index subject.length() - 1 through index 0.

Methods inherited from class java.lang.Object

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

Field Detail

IS_BLANK

public static final Predicate<java.lang.CharSequence> IS_BLANK

A predicate that evaluates its subject with isBlank(CharSequence).

Method Detail

join

public static java.lang.String join(java.util.Collection<? extends java.lang.Object> elements,
                                    java.lang.String glue)

Converts all elements to string and concatenates these, separated by the glue.

equals

public static boolean equals(java.lang.CharSequence cs1,
                             java.lang.CharSequence cs2)

Naturally, CharSequence does not refine Object.equals(Object). This method fills the gap.

compareTo

public static int compareTo(java.lang.CharSequence cs1,
                            java.lang.CharSequence cs2)

Naturally, CharSequence does not extend Comparable. This method fills the gap.

repeat

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

Returns:

A string consisting of n times the character "c"

repeat

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

Returns:

A string consisting of n times the string "s"

isBlank

public static boolean isBlank(java.lang.CharSequence cs)

Returns:

Whether the given char sequences consists only of characters 0...32

firstLetterToUpperCase

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

Returns:

The string s, with the first letter converted to upper case

firstLetterToLowerCase

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

Returns:

The string s, with the first letter converted to lower case

asIterable

public static java.lang.Iterable<java.lang.Character> asIterable(java.lang.CharSequence subject)

Wraps a char sequence as an iterable.

iterator

public static java.util.Iterator<java.lang.Character> iterator(java.lang.CharSequence subject)

Returns an iterator that produces the characters of the subject, from index 0 through index subject.length() - 1.

reverseIterator

public static java.util.Iterator<java.lang.Character> reverseIterator(java.lang.CharSequence subject)

Returns an iterator that produces the characters of the subject in reverse order, from index subject.length() - 1 through index 0.

lessTrailingLineSeparators

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

Returns:

The s, with all trailing '\r' and '\n' chopped off

See Also:

BufferedReader.readLine()