pass the code of java to work for java/android
<p>I have 3 .java files: main.java, separetdat.java and token.java   </p>

<h2>main.java</h2>

<pre><code>import java.util.*;

public class Main {
public static void main(String[] args) {
    Tokenizer ob1=new Tokenizer();
    LinkedList listaDeCoord=new LinkedList();
    SepararDatos oSepararDatos=new SepararDatos();
    ob1.leerPath();
    ob1.getDataFromFile();

    listaDeCoord=ob1.listaTokens;
    listaDeCoord=oSepararDatos.getLinkedList(listaDeCoord);
    double[] vectorDeDatos; //= new double[listaDeCoord.size()];
    double[] vectorIndex;


    vectorDeDatos=oSepararDatos.getArrayData(listaDeCoord);


    vectorIndex=oSepararDatos.getArrayIndex(vectorDeDatos);      

}
}
</code></pre>

<h2>separetdat.java:</h2>

<pre><code>import java.util.*;

public class SepararDatos {

public void SepararDatos()
{

}

public double[] getArrayIndex(double[] vector)
{
    double[] vectorIndex=new double[vector.length/3];
    int index=0,i=0;

    while (index&lt;vector.length)
    {
        vectorIndex[i]=vector[index];
        index=index+3;
        i++;
    }

    return vectorIndex;
}

     public LinkedList getLinkedList(LinkedList lista)
{
    String linea="";
    StringTokenizer st;
    String palabra="";
    LinkedList palabras=new LinkedList();
    //lista=new LinkedList();
    int j=0;
    char c;
    int indice=0;

    for (int i=0;i&lt;lista.size();i++)
    {
        linea=lista.get(i).toString();
        st=new StringTokenizer(linea);
        while (st.hasMoreTokens())
        {
            palabras.add((st.nextToken()));
        }
    }

return palabras;
}



public double[] getArrayData(LinkedList lista)
{
    double[] vectorPalabras=new double[lista.size()];


    for (int i=0;i&lt;vectorPalabras.length;i++)
    {

        vectorPalabras[i]=Double.parseDouble(lista.get(i).toString());

    }

return vectorPalabras;
}
}
</code></pre>

<h2>token.java</h2>

<pre><code>import java.io.*;
import java.util.*;

public class Tokenizer {

String strFile;
BufferedReader br;
String strLine;
StringTokenizer st = null;
int lineNumber = 0, tokenNumber = 0;
LinkedList lista=new LinkedList();
LinkedList listaTokens=new LinkedList();


public void Tokenizer()
{

}

public void leerPath ()
{
    strFile = "path of the txt file.txt";
    try
    {
        br = new BufferedReader( new FileReader(strFile));
    }
    catch(Exception e)
{
        System.out.println("Exception while reading csv file: " + e);
}

}

public double[] getDataFromFile()
{
    double[] vector=new double[lista.size()];

    try
    {
        while( (strLine = br.readLine()) != null)
        {
            lineNumber++;
    //break comma separated line using ","
    //st = new StringTokenizer(strLine, ",");
    st = new StringTokenizer(strLine);
            while(st.hasMoreTokens())
    {
                //display csv values

                System.out.println("Line # " + lineNumber + ", Token # " + tokenNumber + ", Token : "+ st.nextToken());

                tokenNumber++;
    }
                //reset token number
                tokenNumber = 0;
                lista.add(strLine);
        }
    }
    catch(Exception e)
{
        System.out.println("Exception while reading csv file: " + e);
}
    listaTokens=lista;


    for (int i=0;i&lt;vector.length;i++)
    {

        vector[i]=Double.parseDouble(lista.get(i).toString());

    }

    return vector;
}
}
</code></pre>

<p>When I create the java project, it works perfectly, but when I create an Android project, it does not work. What do I need to change the original java code so that it works in Android?</p>

<hr>

<p>im sorry for my question to be how to put it mmmm dumb
basically what i like to now is how to call the methods from the other 2 clases in Activity,
activity has to call form the other 2 classes, simple example will be let say
activity.java has  to call from calculate.java the method that prints out the result</p>

<p>activity.java
calls result from sum
calls result from multiply
prints the results</p>

<p>name.java
let say it does a sum in one funtion
return sum result.</p>

<p>2 function does  multiply 2 numbers
returm multiply results.</p>
