Java Utililty Methods Reflection Method Invoke

List of utility methods to do Reflection Method Invoke

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Description

The list of methods to do Reflection Method Invoke are organized into topic(s).

Method

ObjectinvokeMethod(Object obj, String method, Object... args)
invoke Method 
Class<?>[] parameterTypes = new Class<?>[args.length];
if (args.length > 0)
    for (int i = 0; i < args.length; i++)
        parameterTypes[i] = args[i].getClass();
Method m = obj.getClass().getMethod(method, parameterTypes);
if (!m.isAccessible())
    m.setAccessible(true);
return m.invoke(obj, args);
...
voidinvokeMethod(Object obj, String methodName, Object... args)
Invokes a method (even private methods). 
try {
    Class[] arglist = null;
    if (args != null) {
        arglist = new Class[args.length];
        for (int i = 0; i < arglist.length; i++) {
            arglist[i] = args[i].getClass();
    Method m = obj.getClass().getDeclaredMethod(methodName, arglist);
    AccessibleObject[] ao = { m };
    AccessibleObject.setAccessible(ao, true);
    m.invoke(obj, args);
} catch (Exception ex) {
    ex.printStackTrace();
ObjectinvokeMethod(Object obj, String methodName, Object... args)
invoke Method 
try {
    Method m;
    if (args != null) {
        Class<?>[] argClasses = new Class<?>[args.length];
        for (int i = 0; i < args.length; i++)
            argClasses[i] = args[i].getClass();
        m = obj.getClass().getMethod(methodName, argClasses);
        return m.invoke(obj, args);
...
voidinvokeMethod(Object obj, String methodname, Object... args)
invoke Method 
Class<?> clazz = obj.getClass();
do {
    try {
        for (Method method : clazz.getDeclaredMethods()) {
            if (method.getName().equals(methodname) && method.getParameterTypes().length == args.length) {
                method.setAccessible(true);
                method.invoke(obj, args);
    } catch (Throwable t) {
} while ((clazz = clazz.getSuperclass()) != null);
ObjectinvokeMethod(Object obj, String methodName, Object... params)
Get and invoke the target method from the given object with given parameters 
Method m;
try {
    m = obj.getClass().getMethod(methodName, getParameterTypes(params));
    m.setAccessible(true);
    return m.invoke(obj, params);
} catch (NoSuchMethodException e) {
    throw new UnsupportedOperationException("Cannot find specified method " + methodName, e);
} catch (IllegalAccessException e) {
...
ObjectinvokeMethod(Object obj, String methodName, Object[] params, Class[] paramTypes)
invoke Method 
Class clazz;
if (obj instanceof Class) {
    clazz = (Class) obj;
} else {
    clazz = obj.getClass();
try {
    Method method = clazz.getDeclaredMethod(methodName, paramTypes);
...
ObjectinvokeMethod(Object object, Method method, Object... args)
invoke Method 
method.setAccessible(true);
return method.invoke(object, args);
ObjectinvokeMethod(Object object, String methodName, Class[] parameterTypes, Object[] parameters)
Invoke a method. 
Method method = object.getClass().getMethod(methodName, parameterTypes);
return method.invoke(object, parameters);
ObjectinvokeMethod(Object object, String methodName, Class[] signature, Object[] parameters)
invoke Method 
Class<?> clazz = object.getClass();
try {
    Method method = clazz.getDeclaredMethod(methodName, signature);
    return method.invoke(object, parameters);
} catch (Exception e) {
    e.printStackTrace();
return null;
...
ObjectinvokeMethod(Object object, String methodName, List argList)
invoke Method 
Method method = findMethod(object, methodName, argList);
if (method == null) {
    throw new NoSuchMethodException(
            "No method " + methodName + " for arguments " + debugDumpArgList(argList) + " in " + object);
Object[] args = argList.toArray();
if (method.isVarArgs()) {
    Class<?> parameterTypeClass = method.getParameterTypes()[0];
...