• Java heavily relies on packages
  • packages are the subdirectories containing classes and interfaces

Create a folder ;

code simple MathTesting.java and save it in a directory world

package world;
public class MathTesting
{

public int method(int n1)
{
return (n1+10);
}

}

 

Compiled OK

 Now write your testing code and save it in world's parent directory

import world.*;
public class TestPack
{
public static void main(String[] args)
{
MathTesting mt = new MathTesting();

System.out.println("Got it from world Test Pack\t"+ mt.method(12));
}

}

Compiled as

compile and run it