org.junit.platform.commons.util

Class StringUtils

java.lang.Object

org.junit.platform.commons.util.StringUtils

@API(value=Internal)
public final class StringUtils
extends Object

Collection of utilities for working with Strings, CharSequences, etc.

DISCLAIMER

These utilities are intended solely for usage within the JUnit framework itself. Any usage by external parties is not supported. Use at your own risk!

Since:

1.0

Method Summary

Modifier and Type	Method and Description
static boolean	isBlank(String str) Determine if the supplied String is blank (i.e., null or consisting only of whitespace characters).
static boolean	isNotBlank(String str) Determine if the supplied String is not blank.
static String	nullSafeToString(Class<?>... classes) Generate a comma-separated list of fully qualified class names for the supplied classes.
static String	nullSafeToString(Function<? super Class<?>,? extends String> mapper, Class<?>... classes) Generate a comma-separated list of mapped values for the supplied classes.

Methods inherited from class java.lang.Object

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

Method Detail

isBlank

public static boolean isBlank(String str)

Determine if the supplied String is blank (i.e., null or consisting only of whitespace characters).

Parameters:

str - the string to check

Returns:

true if the string is blank

See Also:

isNotBlank(String)

isNotBlank

public static boolean isNotBlank(String str)

Determine if the supplied String is not blank.

Parameters:

str - the string to check

Returns:

true if the string is not blank

See Also:

isBlank(String)

nullSafeToString

public static String nullSafeToString(Class<?>... classes)

Generate a comma-separated list of fully qualified class names for the supplied classes.

Parameters:

classes - the classes whose names should be included in the generated string

Returns:

a comma-separated list of fully qualified class names, or an empty string if the supplied class array is null or empty

See Also:

nullSafeToString(Function, Class...)

nullSafeToString

public static String nullSafeToString(Function<? super Class<?>,? extends String> mapper,
                                      Class<?>... classes)

Generate a comma-separated list of mapped values for the supplied classes.

The values are generated by the supplied mapper (e.g., Class::getName, Class::getSimpleName, etc.), unless a class reference is null in which case it will be mapped to "null".

Parameters:

mapper - the mapper to use

classes - the classes to map

Returns:

a comma-separated list of mapped values, or an empty string if the supplied class array is null or empty

See Also:

nullSafeToString(Class...)