Class ClassUtils

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 Details

    • nullSafeToString

      public static String nullSafeToString(@Nullable Class<?> clazz)
      Get the fully qualified name of the supplied class.

      This is a null-safe variant of Class.getName().

      Parameters:
      clazz - the class whose name should be retrieved, potentially null
      Returns:
      the fully qualified class name or "null" if the supplied class reference is null
      Since:
      1.3
      See Also:

    • nullSafeToString

      public static String nullSafeToString(@Nullable Class<?> @Nullable ... 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

      public static String nullSafeToString(Function<? super Class<?>, ? extends String> mapper, @Nullable Class<?> @Nullable ... 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; never null
      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: