How do i invoke a class method by its name (method name as string)?

In my application,i came across a situtation,wheri开发者_Go百科n i need to invoke a particular class method by using method name (NSString).

For ex:- there is class called test1 - having method hello.

@interface test1 : NSObject{


};
-hello:(id)vals;
@end

Now , i need to invoke/execute method hello() from here.

assume (id)instance is the instance of class test1.

-(void) RunFunction:(id)instance andFunctionName:(NSString*)fname andParamters:(id)params {


// need to do something like this - is it possible 
// if yes how do i acheive this.
// sample java code starts.
Method m =  instance.getClass().getDeclaredMethod(fname,params);
m.invoke(fname,params);
// sample java code ends.
}

You would use -[NSObject performSelector:withObject:]. In this case:

[instance performSelector:NSSelectorFromString(fname) withObject:params]