Importing package from ext folder

Question

hello ,
i am learning java and try to import packages ,
now here is problem i am facing:-
i made two files as follows :-
1. package mypack1;
public class Protection1{
public void show(){
System.out.println("i am in class Protection1");
2. package mypack2;
public class Protection2{
public void show(){
System.out.println("i am in class Protection2");
now i made following class to import packages
import mypack1.*;
import mypack2.*;
class Trial{
public static void main (String args[]){
System.out.println("trial class");
mypack2.Protection2 ob2=new mypack2.Protection2();
mypack1.Protection1 ob1=new mypack1.Protection1();
ob2.show();
ob1.show();
my problem is class Trial is running fine when packages are in same directory with the file Trial.java .
but when i try to create a jar file and store that file in ext folder so that i can import these packages from anywhere .no error comes at comilation time butwhen i try to run program it shows error the class mypack1/Protection1 can not be found and same for class Protection2 . i know that there is no problem in creating jar files.
please help me to find out solution.
thanks

Answer 1

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but when i try to create a jar file and store that file in ext folder so that i can import these packages from anywhere .no error comes at comilation time butwhen i try to run program it shows error the class mypack1/Protection1 can not be found and same for class Protection2 . i know that there is no problem in creating jar files.I think problem here is you've to put the jar file in your classpath, and then you've to import the classname. it's something like import mypack1.*;can you post me the code. which u've used after creating the jar. and check whether the class files are there in your jar file are not. i mean open the jar with winzip/winrar and chech whether the .class files are there are not.
Diablo