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copied!<p>Probably you just need to map the primitives and for the rest of the classes perform the "forName" method:</p> <p>I would do something like:</p> <pre><code>void someWhere(){ String methodDescription = "doSomething int double java.lang.Integer java.lang.String" String [] parts = methodDescription.split(); String methodName= parts[0] Class [] paramsTypes = getParamTypes( parts ); // Well, not all the array, but a, sub array from 1 to arr.length.. Method m = someObject.class.getMethod( methodName, paramTypes ); etc. etc etc. } public Class[] paramTypes( String [] array ){ List<Class> list = new ArrayList<Class>(); for( String type : array ) { if( builtInMap.contains( type )) { list.add( builtInMap.get( type ) ); }else{ list.add( Class.forName( type ) ); } } return list.toArray(); } // That's right. Map<String,Class> builtInMap = new HashMap<String,Class>();{ builtInMap.put("int", Integer.TYPE ); builtInMap.put("long", Long.TYPE ); builtInMap.put("double", Double.TYPE ); builtInMap.put("float", Float.TYPE ); builtInMap.put("bool", Boolean.TYPE ); builtInMap.put("char", Character.TYPE ); builtInMap.put("byte", Byte.TYPE ); builtInMap.put("void", Void.TYPE ); builtInMap.put("short", Short.TYPE ); } </code></pre> <p>That is, create a map where the primitives types are stored and if the description belong to a primitive then use the mapped class. This map may also be loaded from an external configuration file, to add flexibility so you add String as a built in instead of java.lang.String or potentially have method like this.</p> <p>"doSomething string yes|no " </p> <p>There are lots of this kind of code in OS projects like Struts, Hibernate, Spring and Apache libs ( just to mention a few ) , so you don't need to start from zero.</p> <p>BTW. I did not compile the above code, but I'm pretty sure it works with little modifications don't down vote me for that.</p>

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