Java code optimization - Codes Helper - Programming Question Answer

Java code optimization

public static void doSome(String className, String methodName,String[]methodArgs){
    Class c = Class.forName(className);
    Object target = c.newInstance();
    if(methodArgs == null) {
        Method m = c.getMethod(methodName);
        m.invoke(target);
    } else if(methodArgs.length == 1) {
        Method m = c.getMethod(methodName,methodArgs[0].getClass());
        m.invoke(target,methodArgs[0]);
    } else if(methodArgs.length == 2) {
        Method m = c.getMethod(methodName,methodArgs[0].getClass(),methodArgs[1].getClass());
        m.invoke(target,methodArgs[0],methodArgs[1]);
    } else if(methodArgs.length == 3) {
        Method m = c.getMethod(methodName,methodArgs[0].getClass(),methodArgs[1].getClass(),methodArgs[2].getClass());
        m.invoke(target,methodArgs[0],methodArgs[1],methodArgs[2]);
    } else if(methodArgs.length == 4) {
        Method m = c.getMethod(methodName,methodArgs[0].getClass(),methodArgs[1].getClass(),methodArgs[2].getClass(),methodArgs[3].getClass());
        m.invoke(target,methodArgs[0],methodArgs[1],methodArgs[2],methodArgs[3]);
    } else if(methodArgs.length == 5) {
        Method m = c.getMethod(methodName,methodArgs[0].getClass(),methodArgs[1].getClass(),methodArgs[2].getClass(),methodArgs[3].getClass(),methodArgs[4].getClass());
        m.invoke(target,methodArgs[0],methodArgs[1],methodArgs[2],methodArgs[3],methodArgs[4]);
    }
}

The

code is like this, which is to implement a dynamic proxy through reflection. The parameter is the class name of the proxy class, the name of the method to be executed by the proxy class, and the parameter of the method executed by the proxy class. How can it be written better?

(that is, the parameter problem of the proxied class. When there are several parameters invoke, you need to add several parameters, and when you get method, you need to add several parameter class names)

Java

Mar.18,2021

public static void doSome(String className, String methodName, Object[] methodArgs) throws Exception { Class c = Class.forName(className); Object target = c.newInstance(); if (methodArgs == null) { methodArgs = new Object[0]; } Class[] classes = new Class[methodArgs.length]; for (int i = 0; i < methodArgs.length; iPP) { classes[i] = methodArgs[i].getClass(); } Method method = c.getMethod(methodName, classes); method.invoke(target, methodArgs); }