ClassUtil { @SuppressWarnings("unchecked") public static <T> Class<T> getWrapperTypeIfPrimitive(Class<T> type) { if (type == null) { return null; } if (type.isPrimitive()) { return ((PrimitiveInfo<T>) PRIMITIVES.get(type.getName())).wrapperType; } return type; }  static String getClassNameAsResource(String className); static Class<?> getPrimitiveType(String name); static Class<?> getPrimitiveType(Class<?> type); @SuppressWarnings("unchecked") static Class<T> getWrapperTypeIfPrimitive(Class<T> type); static T getPrimitiveDefaultValue(Class<T> type); static boolean isPrimitiveOrWrapper(Class<?> clazz); static Class<?> getArrayClass(Class<?> componentType); static Class<?> getArrayClass(Class<?> componentClass, int dimension); static Class<?> getArrayComponentType(Class<?> type); static boolean isInstance(Class<?> clazz, Object object); static boolean canInstatnce(Class<T> clazz); static List<Class<?>> getAllSuperclasses(Class<?> clazz); static Class<?>[] getAllSuperclassesAsArray(Class<?> clazz); static List<Class<?>> getAllInterfaces(Class<?> clazz); static Class<?>[] getAllInterfacesAsArray(Class<?> clazz); static Set<Class<?>> getAllInterfacesAsSet(Class<?> clazz, ClassLoader classLoader); static boolean isVisible(Class<?> clazz, ClassLoader classLoader); static boolean isCacheSafe(Class<?> clazz, ClassLoader classLoader); static boolean isInterfaceImpl(Class<?> thisClass, Class<?> targetInterface); static boolean isSubClass(Class<?> thisClass, Class<?> target); static boolean isAssignable(Class<?>[] classes, Class<?>[] fromClasses); static boolean isAssignable(Class<?> clazz, Class<?> fromClass); static String locateClass(Class<?> clazz); static String locateClass(String className); static String locateClass(String className, ClassLoader loader); static String getFriendlyClassNameForObject(Object object); static String getFriendlyClassName(Class<?> clazz); static String getFriendlyClassName(String javaClassName); static String getSimpleClassNameForObject(Object object); static String getSimpleClassNameForObject(Object object, boolean processInnerClass); static String getSimpleClassName(Class<?> clazz); static String getSimpleClassName(Class<?> clazz, boolean proccessInnerClass); static String getSimpleClassName(String javaClassName); static String getSimpleClassName(String javaClassName, boolean proccesInnerClass); static String getSimpleMethodSignature(Method method); static String getSimpleMethodSignature(Method method, boolean withClassName); static String getSimpleMethodSignature(Method method, boolean withModifiers, boolean withReturnType,
            boolean withClassName, boolean withExceptionType); static String getShortClassName(String className); static String getShortClassName(Class<?> clazz); static final char INNER_CLASS_SEPARATOR_CHAR; static final String INNER_CLASS_SEPARATOR; }
@Test public void getWrapperTypeIfPrimitive() { assertEquals(Integer.class, ClassUtil.getWrapperTypeIfPrimitive(int.class)); assertEquals(Long.class, ClassUtil.getWrapperTypeIfPrimitive(long.class)); assertEquals(Short.class, ClassUtil.getWrapperTypeIfPrimitive(short.class)); assertEquals(Double.class, ClassUtil.getWrapperTypeIfPrimitive(double.class)); assertEquals(Float.class, ClassUtil.getWrapperTypeIfPrimitive(float.class)); assertEquals(Character.class, ClassUtil.getWrapperTypeIfPrimitive(char.class)); assertEquals(Byte.class, ClassUtil.getWrapperTypeIfPrimitive(byte.class)); assertEquals(Boolean.class, ClassUtil.getWrapperTypeIfPrimitive(boolean.class)); assertEquals(Void.class, ClassUtil.getWrapperTypeIfPrimitive(void.class)); assertEquals(int[][].class, ClassUtil.getWrapperTypeIfPrimitive(int[][].class)); assertEquals(long[][].class, ClassUtil.getWrapperTypeIfPrimitive(long[][].class)); assertEquals(short[][].class, ClassUtil.getWrapperTypeIfPrimitive(short[][].class)); assertEquals(double[][].class, ClassUtil.getWrapperTypeIfPrimitive(double[][].class)); assertEquals(float[][].class, ClassUtil.getWrapperTypeIfPrimitive(float[][].class)); assertEquals(char[][].class, ClassUtil.getWrapperTypeIfPrimitive(char[][].class)); assertEquals(byte[][].class, ClassUtil.getWrapperTypeIfPrimitive(byte[][].class)); assertEquals(boolean[][].class, ClassUtil.getWrapperTypeIfPrimitive(boolean[][].class)); assertEquals(String.class, ClassUtil.getWrapperTypeIfPrimitive(String.class)); assertEquals(String[][].class, ClassUtil.getWrapperTypeIfPrimitive(String[][].class)); }