Java Reflection Method Parameter getMethod(Class clazz, String functionName, Class[] parameterTypes)

Description

get Method

License

Apache License

Declaration

public static Method getMethod(Class<?> clazz, String functionName, Class<?>[] parameterTypes) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.lang.reflect.Method;

public class Main {
    public static Method getMethod(Class<?> clazz, String functionName, Class<?>[] parameterTypes) {
        try {//from  www  .  ja v a 2  s  .  c o m
            Method function = clazz.getDeclaredMethod(functionName, parameterTypes);
            return function;
        } catch (Exception e) {
            if (parameterTypes.length > 0) {
                Method[] fList = clazz.getDeclaredMethods();
                loop: for (Method md : fList) {
                    Class<?>[] paramTypes = md.getParameterTypes();
                    if (!md.getName().equals(functionName))
                        continue loop;
                    if (paramTypes.length != parameterTypes.length)
                        continue loop;
                    for (int i = 0; i < parameterTypes.length; i++) {
                        if (!paramTypes[i].isAssignableFrom(parameterTypes[i]))
                            continue loop;
                    }
                    return md;
                }
            }

            Class<?> superClazz = clazz.getSuperclass();
            if (superClazz == Object.class) {
                return null;
            } else {
                return getMethod(superClazz, functionName, parameterTypes);
            }
        }
    }
}

Related

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6. getMethod(Class clazz, String method, Class... parameterTypes)
7. getMethod(Class clazz, String methodName, Class... parameterTypes)
8. getMethod(Class clazz, String methodName, Class... parameterTypes)
9. getMethod(Class clazz, String methodName, Class... parameterTypes)