if(mainGroup=="G0"){
                    l1 = (Math.sqrt(Math.pow((x-x1), 2) + Math.pow((y-y1), 2)));
                    }

package ru.myscanner.scannerth;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;

import android.widget.TextView;

public class MainActivity extends Activity {
       
	
		@SuppressLint("SdCardPath")
		private String FILENAME = "/mnt/sdcard/cnc.txt";
        
        /** Called when the activity is first created. */
        @Override
        public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_main);
                TextView text = (TextView)findViewById(R.id.text1);
                
                ArrayList<String> listWithCommands = null;
				try {
					listWithCommands = getCommandsToDB(FILENAME);
				} catch (IOException e) {
					// TODO Автоматически созданный блок catch
					e.printStackTrace();
				}
                for (String s : listWithCommands) {
                    text.append(s+"\n");
                }
            }
         
            public static ArrayList<String> getCommandsToDB(String fileName) throws IOException {
                ArrayList<String> forReturnList = new ArrayList<String>();
                String stringWithText = null;
                BufferedReader bufferedReader = new BufferedReader(new FileReader(new File(fileName)));
                StringBuilder stringBuilder = new StringBuilder();
                
                double x = 0;
                double y = 0;
                double x1 = 0;
                double y1 = 0;
                double l1 = 0;
                
                while((stringWithText = bufferedReader.readLine()) != null) {
                    stringBuilder.append(stringWithText + "\n");
                }
                Pattern pattern = Pattern.compile("((PART)\\s?(((\\w*\\.?))*)?)|(((G|M)[0-9]{1,3})?\\s(Xс**а|B)(-?[0-9]+\\.?[0-9]+)\\s?((X|Y)(-?[0-9]+\\.?[0-9]+))?\\s?(((I)(-?[0-9]+\\.?[0-9]+))?\\s((J)(-?[0-9]+\\.?[0-9]+))?)?)");
                Matcher matcher = pattern.matcher(stringBuilder.toString());
            
                String mainGroup = null;
                String part = null;
                	
                while (matcher.find()) {
                	
                	double a = 0;
                	double b = 0;
                	double i = 0;
                	double j = 0;
                	
                    mainGroup = matcher.group(7);
                    part = matcher.group(3);
                   
                    x = (matcher.group(9) != null && matcher.group(9).equals("X")) ? Double.parseDouble(matcher.group(10)) : 0;
                    y = (matcher.group(9) != null && matcher.group(9).equals("Y")) ? Double.parseDouble(matcher.group(10)) : 0;
                   
                    a = (matcher.group(9) != null && matcher.group(9).equals("A")) ? Double.parseDouble(matcher.group(10)) : a;
                    b = (matcher.group(9) != null && matcher.group(9).equals("B")) ? Double.parseDouble(matcher.group(10)) : b;
                    x = (matcher.group(12) != null && matcher.group(12).equals("X")) ? Double.parseDouble(matcher.group(13)) : x;
                    y = (matcher.group(12) != null && matcher.group(12).equals("Y")) ? Double.parseDouble(matcher.group(13)) : y;
                    i = (matcher.group(16) != null && matcher.group(16).equals("I")) ? Double.parseDouble(matcher.group(17)) : i;
                    j = (matcher.group(19) != null && matcher.group(19).equals("J")) ? Double.parseDouble(matcher.group(20)) : j;
                   
                   
                    
                    //Присвоение  первой  координаты
                    if(x==0){
                    	x=x1;
                    }
                    if(y==0){
                    	y=y1;
                    } 
                    
                    //Вычисление
                    if(mainGroup=="G0"){
                    l1 = (Math.sqrt(Math.pow((x-x1), 2) + Math.pow((y-y1), 2)));
                    }
                    
                    //Присвоение вторичной  координаты
                    if(x!=0 && y!=0){
                    	x1=x;
                    	y1=y;
                    }
                    
                    	 forReturnList.add(mainGroup + "    " + x +"    " + y + "    " + i + "    " + j + "    " + a + "    " + b + "    " + part + "   " + l1); 	
                }
                return forReturnList;  
            }
        }