ClassUtils (JUnit 5.2.0-RC1 API)

java.lang.Object
- org.junit.platform.commons.util.ClassUtils

```
@API(status=INTERNAL,
     since="1.0")
public final class ClassUtils
extends Object
```
Collection of utilities for working with classes.
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

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`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
  - 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...), StringUtils.nullSafeToString(Object)
  - 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...), StringUtils.nullSafeToString(Object)