Dynamic has been used in even JDBC Class.forName (), when used to XML dynamic parsing allocation encountered a class name string can not be instantiated as a class name, search and find finally found a solution:
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<args.length;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<method.length;i++) {
if (Method[i].getname (). Equals ("main"))
return method[i];
}
return null;
}
}
One more simple test program:
public class echoit{
public static void Main (String args[]) {
for (int i=0;i<args.length;i++) {
System.out.println ("Echo arg" +i+ "=" +args[i]);
}
}
}
After all compiled
Java dynamicloader Echo One two THERE
You can see the effect, both dynamically load echo and pass it three parameters:)
