ClassUtil { public static boolean isPrimitiveOrWrapper(Class<?> clazz) { if (clazz == null) { return false; } return PRIMITIVES.get(clazz.getName()) != null; }  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 isPrimitiveOrWrapper() { assertTrue(ClassUtil.isPrimitiveOrWrapper(int.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(long.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(short.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(double.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(float.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(char.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(byte.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(boolean.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(void.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(Integer.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(Long.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(Short.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(Double.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(Float.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(Character.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(Byte.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(Boolean.class)); assertTrue(ClassUtil.isPrimitiveOrWrapper(Void.class)); assertFalse(ClassUtil.isPrimitiveOrWrapper(int[].class)); assertFalse(ClassUtil.isPrimitiveOrWrapper(long[].class)); assertFalse(ClassUtil.isPrimitiveOrWrapper(Double[].class)); assertFalse(ClassUtil.isPrimitiveOrWrapper(Boolean[].class)); assertFalse(ClassUtil.isPrimitiveOrWrapper(String.class)); assertFalse(ClassUtil.isPrimitiveOrWrapper(Object.class)); assertFalse(ClassUtil.isPrimitiveOrWrapper(Enum.class)); assertFalse(ClassUtil.isPrimitiveOrWrapper(Override.class)); assertFalse(ClassUtil.isPrimitiveOrWrapper(Compiler.class)); }