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String  menAction= "gef.putin.step.ui.SystemMenuTest(xiajiaji)"ÔÚ¸ÃÀàÖÐÐèÒªÓÐÓÐÒ»¸ö×Ö·û´®¸ñʽµÄ²ÎÊý£¬µ±È»¶à¸ö²ÎÊýÒ²¿ÉÒÔ£¬ÎÒÒѾ­½«¶à¸ö²ÎÊýµÄ¿¼ÂǽøÈ¥£¬¶Ô¸Ä×Ö·û´®½øÐнâÎö¾Í¿ÉÒÔת»»³ÉÀàµÄʵÀý¶ÔÏóÁË¡£ÒÔÏÂÊÇÎÒ×öµÄÒ»¸öСµÄDemo£¬Èç¹ûÄܹ»°ïÖú´ó¼Ò£¬ÎÒµ±È»¾õµÃºÜ¿ªÐÄ£¬Ï£Íû¶Ô´ó¼ÒÓаïÖú¡£
import java.lang.reflect.Constructor;
public class Test {
 public static void main(String [] args){
  String menuAction = "gef.putin.step.ui.SystemMenuTest(xiajiaji)";
  boolean endsWith = menuAction.endsWith(")");
  SystemMenuTest action =null;
  if(!endsWith){
  try{
   action = (SystemMenuTest) Class.forName(menuAction).newInstance();
  }catch(Exception ee){
   ee.printStackTrace();
  }
  }else{
   String clazzName = menuAction.substring(0, menuAction.indexOf("("));
   String parAllStr =  menuAction.substring(menuAction.indexOf("(")+1, menuAction.indexOf(")"));
   boolean contains = parAllStr.contains(",");
   String [] parStr = null;
   if(contains){
    parStr = parAllStr.split(",");
   }else{
    parStr = new String[]{parAllStr};
   }
   try{
    Class clazz = Class.forName(clazzName);
    Class [] parClass = new Class[parStr.length];
    for(int i =0;i<parStr.length;i++){
     parClass [i] = String.class;
    }
    Constructor con=clazz.getConstructor(parClass);
    action = (SystemMenuTest) con.newInstance(parStr);
   }catch(Exception exe){
    exe.printStackTrace();
   }
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