How to use Javac compiler on files from different folders ?

[siddharth sekhar]

Hello , I encountered a problem using javac compiler on the terminal , which is as follows.

I have a folder on my desktop named "JPro".

Inside the folder I have two folders named "One" and "two".

Inside folder "One" I have two java files containing a  simple class and a class containing the main method , both of them compiles fine.

Inside folder "two" I have another java file which too compile fine.

But when I try to import the file inside folder "two" from folder "one" , cannot compile because it do not recognize the file inside folder "two"

So , how can i compile java filed located in different folders from another folder.

My program is like this

/////// Inside Folder JPro //////////

//// Inside Folder One //////

Launcher.java

import /home/cmputer/Desktop/JPro/Two/HelperTwo;

public class Launcher{

public static void main(String [] arg){

HelperOne hp1 = new HelperOne();
hp1.display();

HelperTwo hp2 = new HelperTwo();
hp2.display_two();

}

}

HelperOne.java

public class HelperOne{
public void display(){
System.out.println("From Helper One ");
}
}

///////////////////////////////


//// Inside Folder Two //////

HelperTwo.java

public class HelperTwo{

public void display_two(){
System.out.println("From Helper Two");
}

}

///////////////////////////////

I am using ubuntu 14.04 and not using any IDE .

Thank You.

[Mark Spencers]

To compile java files you need to specify full path to files:

javac folder1/folder2/file1.java folder3/folder4/file2.java.java

[Stephan van Hulst]

First of all, don't name packages after locations on your computer. The recommended scheme is to use the components of your company's website hostname in reverse order, followed by a component identifying your application, and finally the names of subpackages:
com.example.application.subpackage.

If you don't have a website, pretend you do and make up a hostname.

Package names use dots to separate the components, not slashes.

Finally, your application can have multiple source folders, each acting as a root for your packages. For instance, if your application contains a folder for regular source files and one for test source files, its directory structure might look something like this:
MyApplication  src    com/example/myapp/bar      Bar.java    com/example/myapp/foo      Foo.java  src-test    com/example/myapp/bar      BarTest.java    com/example/myapp/foo      FooTest.java  bin    com/example/myapp/bar      Bar.class      BarTest.class    com/example/myapp/foo      Foo.class      FooTest.class
You can compile the test files by specifying all the source folders with the -sourcepath switch:
javac -sourcepath src;src-test -d bin src-test/com/example/myapp/foo/*.java src-test/com/example/myapp/bar/*.java