Example usage for java.lang Class getSuperclass

Introduction

In this page you can find the example usage for java.lang Class getSuperclass.

Prototype

@HotSpotIntrinsicCandidate
public native Class<? super T> getSuperclass();

Source Link

Document

Returns the Class representing the direct superclass of the entity (class, interface, primitive type or void) represented by this Class .

Usage

From source file:ReflectUtil.java

/**
 * Fetches all fields of all access types from the supplied class and super
 * classes. Fieldss that have been overridden in the inheritance hierarchy are
 * only returned once, using the instance lowest down the hierarchy.
 *
 * @param clazz the class to inspect//from w ww .j a v a  2  s  .  c o m
 * @return a collection of fields
 */
public static Collection<Field> getFields(Class<?> clazz) {
    Map<String, Field> fields = new HashMap<String, Field>();
    while (clazz != null) {
        for (Field field : clazz.getDeclaredFields()) {
            if (!fields.containsKey(field.getName())) {
                fields.put(field.getName(), field);
            }
        }

        clazz = clazz.getSuperclass();
    }

    return fields.values();
}

---

From source file:Main.java

/**
 * Sorts objects in the given collection into different types by Class.
 * @param <E> the element type/* ww  w.j a  v  a  2s.  com*/
 * @param objects a Collection of objects
 * @param inherit if true, objects are put into all their class's superclasses as well, except
 * Object - the original Collection can be used in that case
 * @return a Map from Class to List of objects in that class
 */
public static <E> Map<Class<?>, List<E>> groupByClass(Collection<E> objects, boolean inherit) {
    Map<Class<?>, List<E>> retval = new HashMap<Class<?>, List<E>>();
    for (E o : objects) {
        Class<?> c = o.getClass();
        if (inherit) {
            Set<Class<?>> done = new HashSet<Class<?>>();
            done.add(Object.class);
            Stack<Class<?>> todo = new Stack<Class<?>>();
            todo.push(c);
            while (!todo.empty()) {
                c = todo.pop();
                if ((c != null) && !done.contains(c)) {
                    done.add(c);
                    List<E> l = retval.get(c);
                    if (l == null) {
                        l = new ArrayList<E>();
                        retval.put(c, l);
                    }
                    l.add(o);
                    todo.push(c.getSuperclass());
                    Class<?>[] classes = c.getInterfaces();
                    for (int i = 0; i < classes.length; i++) {
                        todo.push(classes[i]);
                    }
                }
            }
        } else {
            List<E> l = retval.get(c);
            if (l == null) {
                l = new ArrayList<E>();
                retval.put(c, l);
            }
            l.add(o);
        }
    }
    return retval;
}

---

From source file:com.google.code.guice.repository.spi.TypeUtil.java

public static void getGenericSuperclassActualTypes(Collection<Type> types, Class aClass) {
    if (aClass != null && types != null) {
        Type superclass = aClass.getGenericSuperclass();
        if (superclass instanceof ParameterizedType) {
            ParameterizedType parameterizedType = (ParameterizedType) superclass;
            Type[] interfaces = parameterizedType.getActualTypeArguments();
            types.addAll(Arrays.asList(interfaces));
        } else if (superclass instanceof Class) {
            Class sClass = (Class) superclass;
            getGenericInterfacesActualTypes(types, sClass);
            getGenericSuperclassActualTypes(types, aClass.getSuperclass());
        }//from w w  w.  j a va2 s. c o m
    }
}

---

From source file:com.ocs.dynamo.utils.ClassUtils.java

/**
 * Returns a field with a certain name from a class
 * //from w  w  w.  ja va2s.  com
 * @param clazz
 *            the class
 * @param fieldName
 *            the name of the filed
 * @return
 */
public static Field getField(Class<?> clazz, String fieldName) {
    Field field = null;
    if (clazz != null) {
        try {
            field = clazz.getDeclaredField(fieldName);
        } catch (NoSuchFieldException e) {
            LOG.debug(e.getMessage(), e);
            if (clazz.getSuperclass() != null) {
                return getField(clazz.getSuperclass(), fieldName);
            }
        }
    }
    return field;
}

---

From source file:com.ms.commons.test.common.ReflectUtil.java

public static Field getDeclaredField(Class<?> clazz, String field)
        throws SecurityException, NoSuchFieldException {
    if (clazz == Object.class) {
        throw new NoSuchFieldException(
                "Field `" + field + "` in class `" + clazz.getName() + "` cannot be found.");
    }/*from  w  w w  .ja v  a 2s.  c  o  m*/
    try {
        return clazz.getDeclaredField(field);
    } catch (SecurityException e) {
        throw e;
    } catch (NoSuchFieldException e) {
        return getDeclaredField(clazz.getSuperclass(), field);
    }
}

---

From source file:cc.sion.core.utils.Reflections.java

/**
 * ??//from ww  w .j a v  a 2  s .  c  o m
 *
 * @param clazz
 * @param index
 * @param <T>
 * @return
 */
public static <T> Class<T> findParameterizedType(Class<?> clazz, int index) {
    //getSuperclass()
    //getGenericSuperclass()
    //Type Java ???????
    Type type = clazz.getGenericSuperclass();
    //CGLUB subclass target object()
    if (!(type instanceof ParameterizedType)) {
        type = clazz.getSuperclass().getGenericSuperclass();
    }
    if (!(type instanceof ParameterizedType)) {
        return null;
    }
    //ParameterizedType??
    ParameterizedType p = (ParameterizedType) type;
    //getActualTypeArguments???
    Type[] actualTypeArguments = p.getActualTypeArguments();
    if (actualTypeArguments == null || actualTypeArguments.length == 0) {
        return null;
    }
    return (Class<T>) actualTypeArguments[0];
}

---

From source file:com.iisigroup.cap.utils.CapBeanUtil.java

/**
 * ?Clazz?(?super class)// w w  w . j a v  a 2 s .c o  m
 * 
 * @param clazz
 *            class
 * @param containSuperClazz
 *            ??Class?
 * @return Field[]
 */
@SuppressWarnings({ "rawtypes" })
public static Field[] getField(Class clazz, boolean containSuperClazz) {
    Set<Field> cols = new LinkedHashSet<Field>();
    Class searchClazz = clazz;
    while (!Object.class.equals(searchClazz) && searchClazz != null) {
        Field[] fields = searchClazz.getDeclaredFields();
        for (Field f : fields) {
            if ("serialVersionUID".equals(f.getName()))
                continue;
            cols.add(f);
        }
        searchClazz = containSuperClazz ? searchClazz.getSuperclass() : null;
    }
    return cols.toArray(new Field[] {});
}

---

From source file:de.micromata.genome.util.runtime.AssertUtils.java

/**
 * Gets the stack above./*from  ww  w.jav  a2s .  c o  m*/
 *
 * @param above the above
 * @return the stack above
 */
public static StackTraceElement getStackAbove(final Class<?> above) {
    final StackTraceElement[] stel = Thread.currentThread().getStackTrace();
    boolean foundFirst = false;
    final String clsName = above.getCanonicalName();
    for (int i = 0; i < stel.length; ++i) {
        final StackTraceElement s = stel[i];
        final String scn = s.getClassName();
        if (clsName.equals(scn) == false) {
            if (foundFirst == true) {
                return s;
            }
        } else {
            foundFirst = true;
        }
    }
    if (above.getSuperclass() != null) {
        return getStackAbove(above.getSuperclass());
    }
    return null;
}

---

From source file:Main.java

public static Set<Class<?>> getMinimalImplementedInterfaceNames(Class<?> klass) {
    Set<Class<?>> interfaces = new HashSet<Class<?>>();
    while (klass != null) {
        Class<?>[] localInterfaces = klass.getInterfaces();
        for (Class<?> intf : localInterfaces) {
            boolean subsumed = false;
            for (Class<?> i : new ArrayList<Class<?>>(interfaces)) {
                if (intf.isAssignableFrom(i)) {
                    subsumed = true;//from w w  w.  j  ava2 s  .c  o  m
                    break;
                } else if (i.isAssignableFrom(intf)) {
                    interfaces.remove(i);
                }
            }
            if (subsumed) {
                continue;
            }
            interfaces.add(intf);
        }
        klass = klass.getSuperclass();
    }
    return interfaces;
}

---

From source file:com.iisigroup.cap.utils.CapBeanUtil.java

/**
 * ?Clazz?(?super class)//from  w  w  w.j a  v  a  2s  . c  om
 * 
 * @param clazz
 *            class
 * @param containSuperClazz
 *            ??Class?
 * @return String[]
 */
@SuppressWarnings({ "rawtypes" })
public static String[] getFieldName(Class clazz, boolean containSuperClazz) {
    Set<String> cols = new LinkedHashSet<String>();
    Class searchClazz = clazz;
    while (!Object.class.equals(searchClazz) && searchClazz != null) {
        Field[] fields = searchClazz.getDeclaredFields();
        for (Field f : fields) {
            if ("serialVersionUID".equals(f.getName()))
                continue;
            cols.add(f.getName());
        }
        searchClazz = containSuperClazz ? searchClazz.getSuperclass() : null;
    }
    return cols.toArray(new String[cols.size()]);
}

---

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