Java Reflection Method Parameter getMethod(Class clazz, String methodName, Class... parameterTypes)

Description

get Method

License

Apache License

Declaration

public static Method getMethod(Class<?> clazz, String methodName, Class<?>... parameterTypes) 

Method Source Code

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

import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;

public class Main {
    private final static Map<String, Method> methodMap = new HashMap<>();

    public static Method getMethod(Class<?> clazz, String methodName, Class<?>... parameterTypes) {
        String key = clazz + methodName;
        Method method = methodMap.get(key);
        if (method == null) {
            synchronized (clazz) {
                if (method == null) {
                    try {
                        method = clazz.getDeclaredMethod(methodName, parameterTypes);
                        methodMap.put(key, method);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }/*w ww.  jav  a2 s .  co m*/
                }
            }
        }
        return method;
    }
}

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