java - newInstance() | ClassNotFoundException | NoClassDefFounfError -

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this question has answer here:

following code, when giving command java test getting error noclassdeffounderror , when give command java test s error classnotfound.

as per knowledge if newinstance() used , class not found classnotfound error should com

why there difference in errors?

enter image description here

class test {  public static void main(string[] args) throws exception {     system.out.println("in main method");     object o = class.forname(args[0]).newinstance();     system.out.println(o.getclass().getname()); }  }  class student {  }  class teacher {  }

as per knowledge if newinstance() used , class not found classnotfound error should com 

    @callersensitive public static class<?> forname(string classname)             throws classnotfoundexception {     class<?> caller = reflection.getcallerclass();     return forname0(classname, true, classloader.getclassloader(caller), caller); }

forname method throwing classnotfoundexception exception.

newinstance method throwing instantiationexception , illegalaccessexception

i'm not able reproduce issue, in each case classnotfoundexception





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