org.faktorips.runtime.internal

Enum IpsStringUtils

java.lang.Object

java.lang.Enum<IpsStringUtils>

org.faktorips.runtime.internal.IpsStringUtils

All Implemented Interfaces:

Serializable, Comparable<IpsStringUtils>

public enum IpsStringUtils
extends Enum<IpsStringUtils>

A collection of utility methods for Strings. We don't use a class library like apache-commons here to minimize the dependencies for the generated code.

Field Summary

Fields

Modifier and Type	Field and Description
static String	EMPTY

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	isBlank(String s) Returns true if s is either null, the empty string or a string that only contains whitespaces, otherwise false.
static boolean	isEmpty(String s) Returns true if s is either null or the empty string, otherwise false.
static boolean	isNotEmpty(String s) Returns true if s is not null and is not the empty string, otherwise false.
static String	join(Collection<?> collection, String separator) Joins the elements of the provided Collection into a single String containing the provided elements with the given separator.
static String	join(Object[] objectArray, String separator)
static IpsStringUtils	valueOf(String name) Returns the enum constant of this type with the specified name.
static IpsStringUtils[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

EMPTY

public static final String EMPTY

See Also:

Constant Field Values

Method Detail

values

public static IpsStringUtils[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (IpsStringUtils c : IpsStringUtils.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static IpsStringUtils valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

isEmpty

public static final boolean isEmpty(String s)

Returns true if s is either null or the empty string, otherwise false.

isNotEmpty

public static final boolean isNotEmpty(String s)

Returns true if s is not null and is not the empty string, otherwise false.

isBlank

public static final boolean isBlank(String s)

Returns true if s is either null, the empty string or a string that only contains whitespaces, otherwise false.

join

public static final String join(Collection<?> collection,
          String separator)

Joins the elements of the provided Collection into a single String containing the provided elements with the given separator. No delimiter is added before or after the list.

Parameters:

collection - the Collection of values to join together, may be null

separator - the separator to use, null treated as ""

Returns:

the joined String, null if the collection is null

join

public static final String join(Object[] objectArray,
          String separator)