ObjectFactory.java

package tap.util;

import com.google.protobuf.Message;

public class ObjectFactory {
    public static <T> T newInstance(Class<? extends T> cls) throws Exception {
        if(Message.class.isAssignableFrom(cls)) {
            return (T) cls.getMethod("getDefaultInstance").invoke(null);
        }
        else if (cls.getName().equals("java.lang.String")) {
        	return (T) new String();
        } else {
            return (T) cls.newInstance();
        }
    }
}