Java Utililty Methods Reflection Method Get from Object

List of utility methods to do Reflection Method Get from Object

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Description

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

Method

MethodgetMethod(Class type, String name, Object[] args)
get Method 
return selectMethod(getMethods(type, name), args);
MethodgetMethod(final Class clazz, final String methodName, final Class[] parTypes, final Object[] parameters)
get Method 
assert clazz != null && methodName != null && parTypes != null && parameters != null;
try {
    return clazz.getDeclaredMethod(methodName, parTypes);
} catch (NoSuchMethodException e) {
    final Class<?> superClass = clazz.getSuperclass();
    if (superClass != null) {
        return getMethod(superClass, methodName, parTypes, parameters);
    throw e;
MethodgetMethod(final Object object, final String methodName, final Class... parameterClass)
get Method 
return getMethod(object.getClass(), methodName, parameterClass);
MethodgetMethod(final Object object, final String methodName, final Object... arguments)
Returns object's method with the specified name and arguments. 
return getMethod(object.getClass(), methodName, arguments);
ObjectgetMethod(final Object object, final String methodName, final Object... arguments)
get Method 
final Class<?> c = object.getClass();
final Class<?>[] parameterTypes = new Class<?>[arguments.length];
int counter = 0;
for (final Object argument : arguments) {
    parameterTypes[counter++] = argument.getClass();
final Method method = c.getDeclaredMethod(methodName, parameterTypes);
return method;
...
MethodgetMethod(final Object object, String methodName, final Class[] argTypes)
get Method 
final Method method;
try {
    method = object.getClass().getMethod(methodName, argTypes);
} catch (Exception e) {
    throw new IllegalArgumentException("Exception when retrieving method " + methodName + " by reflection",
            e);
return method;
...
MethodgetMethod(final Object target, final String methodName, final Class... argumentTypes)
Returns a the specified method of the target object, or null if the method does not exist. 
return getMethod(target.getClass(), methodName, argumentTypes);
MethodgetMethod(final String methodName, final Object obj, final Class... argTypes)
Returns a method (public or private) object for the given methodName if it exists. 
Method method = null;
try {
    method = obj.getClass().getDeclaredMethod(methodName, argTypes);
    method.setAccessible(true);
} catch (final SecurityException e) {
    throw new RuntimeException(e);
} catch (final NoSuchMethodException e) {
    throw new RuntimeException(e);
...
MethodgetMethod(Object bean, String propertyName)
Return the named getter method on the bean or null if not found. 
final StringBuilder sb = new StringBuilder("get").append(Character.toUpperCase(propertyName.charAt(0)));
if (propertyName.length() > 1) {
    sb.append(propertyName.substring(1));
final String getterName = sb.toString();
for (Method m : bean.getClass().getMethods()) {
    if (getterName.equals(m.getName()) && m.getParameterTypes().length == 0) {
        return m;
...
OptionalgetMethod(Object instance, String methodName, Class... argsClass)
get Method 
try {
    return Optional.of(instance.getClass().getMethod(methodName, argsClass));
} catch (NoSuchMethodException | SecurityException e) {
    e.printStackTrace();
return Optional.empty();