Mega Code Archive
Basically Class getMethod but allows for a list of parameter types instead of a variable arguments list
<![CDATA[
//package org.beryl.util;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
class Reflection {
public static final ArrayList<Class<?>> ZeroParameters = new ArrayList<Class<?>>();
/**
* Basically Class.getMethod but allows for a list of parameter types instead of a variable arguments list.
* @throws SecurityException
* @throws NoSuchMethodException
*/
public static Method findDeclaredMethod(final Class<?> clazz, final String methodName, List<Class<?>> paramTypes) throws SecurityException, NoSuchMethodException {
Method method = null;
Method [] methods = clazz.getDeclaredMethods();
if(paramTypes == null) {
paramTypes = ZeroParameters;
}
for(Method candidate : methods) {
if(candidate.getName().equals(methodName)) {
Class<?>[] candidateParamTypes = candidate.getParameterTypes();
if(candidateParamTypes.length == paramTypes.size()) {
final int length = candidateParamTypes.length;
boolean parametersMatch = true;
for(int i = 0; i < length && parametersMatch; i++) {
if(! candidateParamTypes[i].isAssignableFrom(paramTypes.get(i))) {
parametersMatch = false;
}
}
if(parametersMatch) {
method = candidate;
method.setAccessible(true);
break;
}
}
}
}
/* Try this to:
method = clazz.getDeclaredMethod(methodName, (Class<?>[]) paramTypes.toArray());
if(method != null) {
method.setAccessible(true);
}
*/
return method;
}
}
]]>