一直都在连JDBC中用到Class.forName()，当用到XML动态解析分派的时候遇到了Class名字符串无法作为Class名实例化的问题，寻寻觅觅终于找到一个解决的办法：

public class DynamicLoader{

????public static void main(String args[]) throws Exception{

????????Class toRun = Class.forName(args[0]);

????????String[] newArgs=scrubArgs(args);

????????Method mainMethod = findMain(toRun);

????????mainMethod.invoke(null,new Object[]{newArgs});

????}

????private static String[] scruArgs(String[],args){

????????String[] toReturn = new String[args.length-1];

????????for(int i=0;i

??????????????toReturn[i-1]=args[i].toLowerCase();

?????????}

????????return toReturn;

????}

????private static Method findMain(Class clazz) throw Exception{

????????Method[] method = class.getMethods();

????????for(int i=0;i

???????????if(method[i].getName().equals("main"))

???????????????return method[i];

????????}

????????return null;

}

}

再来个简单的测试程序：

public class Echoit{

??????public static void main(String args[]){

??????????????for(int i=0;i

?????????????????System.out.println("Echo arg"+i+" = "+args[i]);

????????????????}

???????????}

}

都编译之后

java DynamicLoader Echo ONE TWO THERE

就可以看到效果了，既动态载入Echo又给它传了三个参数：）