Example usage for java.lang Object getClass

Introduction

In this page you can find the example usage for java.lang Object getClass.

Prototype

@HotSpotIntrinsicCandidate
public final native Class<?> getClass();

Source Link

Document

Returns the runtime class of this Object .

Usage

From source file:Main.java

public static <T> T getT(Object o, int i) {
    try {/*from  w ww.  j a v  a  2 s. c o  m*/
        return ((Class<T>) ((ParameterizedType) (o.getClass().getGenericSuperclass()))
                .getActualTypeArguments()[i]).newInstance();
    } catch (InstantiationException e) {
        e.printStackTrace();
    } catch (IllegalAccessException e) {
        e.printStackTrace();
    } catch (ClassCastException e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

public static boolean setProperty(Object object, String fieldName, Object fieldValue) {
    Class<?> clazz = object.getClass();
    String mname = "set" + fieldName;
    try {/*from w  w  w.ja va  2  s  . c o m*/
        for (Method m : clazz.getMethods()) {
            if (m.getName().equalsIgnoreCase(mname)) {
                m.invoke(object, fieldValue);
                return true;
            }
        }
    } catch (Exception e) {
        throw new IllegalStateException(e);
    }

    return false;
}

From source file:Main.java

public static <T> Collection<T> getObjectsOfType(Collection<?> input, Class<T> type, Collection<T> output) {
    if (output == null) {
        output = createEmpty(input);//  w  w w  .  ja v  a 2s.  c o m
        if (output == null)
            output = new ArrayList<T>();
    }
    for (Object o : input) {
        if (type.isAssignableFrom(o.getClass()))
            output.add((T) o);
    }
    return output;
}

From source file:Main.java

public static void putInHashMapByGivenAttribute(HashMap map, Object obj, String attribName) {
    try {/*from   ww  w. j  a v  a 2s. c o  m*/
        Class class1 = obj.getClass();
        String methodName = "get" + Character.toUpperCase(attribName.charAt(0)) + attribName.substring(1);
        Method method = class1.getMethod(methodName, new Class[0]);
        Object attributeValue = method.invoke(obj, new Object[0]);
        map.put(attributeValue, obj);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static int indexOfFirst(Object[] array, Class<?> type) {
    if (!isEmpty(array)) {
        int N = -1;
        for (Object one : array) {
            N++;//from  w ww. j  a  v a 2s.  c o  m
            if (one != null && type == one.getClass()) {
                return N;
            }
        }
    }
    return -1;
}

From source file:Main.java

@SuppressWarnings({ "rawtypes" })
public static Method hasProperty(Object o, String propertyName) {

    Class c = o.getClass();
    Method method = methodOrNull(c, propertyName);
    if (method != null) {
        return method;
    }//w  ww . j  a va  2s.  c  o  m
    method = methodOrNull(c, "get" + captitalize(propertyName));
    if (method != null) {
        return method;
    }
    method = methodOrNull(c, "is" + captitalize(propertyName));
    return method;

    /*
     * for (Method m : methods) { String methodName = m.getName(); if
     * (methodName.equals(propertyName) ||
     * methodName.equals("is"+captitalize(propertyName)) ||
     * methodName.equals("get"+captitalize(propertyName))) { return m; } }
     */

}

From source file:Main.java

public static Object arrayExpandAddElements(Object array, Object[] elementsToAdd) {
    Class cl = array.getClass();
    if (!cl.isArray())
        return null;
    int length = Array.getLength(array);
    int newLength = length + elementsToAdd.length;
    Class componentType = array.getClass().getComponentType();
    Object newArray = Array.newInstance(componentType, newLength);
    System.arraycopy(array, 0, newArray, 0, length);
    for (int i = 0; i < elementsToAdd.length; i++) {
        Array.set(newArray, length + i, elementsToAdd[i]);
    }// w  w w . ja va2  s .  c o  m
    return newArray;
}

From source file:Main.java

/**
 * Set the fields' value.// ww  w .  j ava  2 s  .  c  o  m
 * 
 * @param bean
 * @param valMap
 */
public static void setFieldValues(Object bean, Map<String, Object> valMap) {
    Class<?> cls = bean.getClass();
    //Get all fields.
    Field[] fields = cls.getDeclaredFields();

    for (Field field : fields) {
        if (valMap.containsKey(field.getName())) {
            field.setAccessible(true);
            try {
                field.set(bean, valMap.get(field.getName()));
            } catch (IllegalArgumentException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }
    }
}

From source file:Main.java

private static Field findField(Object instance, String name) throws NoSuchFieldException {
    for (Class<?> clazz = instance.getClass(); clazz != null; clazz = clazz.getSuperclass()) {
        try {//from www.j a va  2s  . co m
            Field f = clazz.getDeclaredField(name);
            f.setAccessible(true);
            return f;
        } catch (NoSuchFieldException e) {
        }
    }
    throw new NoSuchFieldException("Unable to find field " + name + " in " + instance.getClass());
}

From source file:Main.java

public static String ObjToXml(Object object) throws JAXBException, IOException {
    return ObjToXml(object, object.getClass());
}