JAVA beginner's sloppy code string conversion question

import java.util.Arrays;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.PrintWriter;
import java.io.IOException;

public class traineroutput {
    public static void main(String args[]) throws IOException{

        BufferedReader br = new BufferedReader (newFileReader ("c:/input.txt")); //Read Input File
        while(true) {
            String lines = br.readLine(); 
            String [] Array1= lines.split("\\r?\\n");
            Arrays.toString(Array1);
            for (int i=1; i<489; i++){
            String [] Array2=String(Array1[i]).split(" ");
            String [] Array3=Array1[i-1].split(" ");

            Array2[0]=lat1;
            Array2[1]=lon1;
            Array2[2]=z1;

            Array3[0]=lat2;
            Array3[1]=lon2;
            Array3[2]=z2;

            double lat1, lon1, lat2, lon2;
            double theta1, theta2;
            double x1, x2, x3, y1, y2, y3, z1, z2;
            int=63710000; //Earth Radius (in m)
            double lat3= ;
            double lon3= ;
            double z3= ;

            x1=r*Math.cos(deg2rad(lat1/100))*Math.cos(deg2rad(lon1/100)));//convert string gps to x coordinates
            x2= r*Math.cos(deg2rad(lat2/100))*Math.cos(deg2rad(lon2/100)));//previous gps
            x3= r*Math.cos(deg2rad(lat3/100))*Math.cos(deg2rad(lon3/100)));//target point gps

            y1= r*Math.cos(deg2rad(lat1/100))*Math.sin(deg2rad(lon1/100);//convert the current gps into y coordinates
            y2= r*Math.cos(deg2rad(lat2/100))*Math.sin(deg2rad(lon2/100));//previous gps
            y3= r*Math.cos(deg2rad(lat3/100))*Math.sin(deg2rad(lon3/100));//target point gps

            //z can be used as an elevation value.

            double a= (y1-y2)/(x1-x2); // inclines
            double b= (y3-y1)/(x3-x1);
            double c= (z1-z2)/(x1-x2);
            double d= (z3-z1)/(x3-x1);

            theta2= Math.atan(Math.abs(a-b)/(1+a*b));
            theta1= Math.atan(Math.abs(c-d)/(1+c*d));

              PrintWriterpw = new PrintWriter ("c:/output.txt"); //Create Output File
              {
                    pw.print(theta1);
                    pw.println(" "+ theta2);
                }
                pw.close();

            }
            if (lines==null) break;

        }
        br.close();

    }

    //Convert a given degree value to a radion  
    private double deg2rad(double deg){  
        return (double)(deg * Math.PI / (double)180);  
    }  

        // Convert a given radian value to a degree value  
    private double rad2deg(double rad){  
        return (double)(rad * (double)180 / Math.PI);  
    }
}



I'm sorry...You posted a shabby question in a precious place.
It's a really sloppy code, but they keep saying that there's a problem with the type conversion in eclipse...
I would really appreciate it if you could point out any advice or problems in any way! crying