I am losing my mind with the Null pointer topic

Question

Please please help I want to go home
Need to split file into equal sized subfiles, the number of subfiles specified by the user
import java.io.*;
import java.util.*;
public class SpecifyFiles
public static void main (String [] args)
    try //try 1
//open input stream
File inputFile = new File(Input.readString("Input Filename:"));
InputStream inStream = new FileInputStream(inputFile);
InputStreamReader inreader = new InputStreamReader(inStream, "8859_1");
BufferedReader reader = new BufferedReader(inreader);
int numOutputFiles = Input.readInt("How many files?:");
//open output streams
for (int j = 0; j < numOutputFiles; j++) // for loop 1
OutputStream fout= new FileOutputStream(Input.readString("Output Filename:"));
OutputStream bout= new BufferedOutputStream(fout);
OutputStreamWriter out = new OutputStreamWriter(bout, "8859_1");
OutputStreamWriter [] fileHandles = new OutputStreamWriter[numOutputFiles];
int fileLength = (int)inputFile.length();
int newFileSize = fileLength/numOutputFiles;
byte [] byteArray = new byte [fileLength];
System.out.println(newFileSize);
//read data in and display them
inStream.read (byteArray);
//initialise the array of bytes
for (int a = 0; a < numOutputFiles; a++) // for loop 2
    fileHandles[a] = out;
   for (int i = (a*newFileSize); i < (a+1)*newFileSize; i++) //for loop 3
          out.write(byteArray);
} // for loop 2
out.close();
} //for loop 1
} catch (Exception ey) { ey.printStackTrace(); }
PROBLEM: IT IS ONLY PRINTING TO THE FIRST OUTPUT FILE

Answer 1

Yes. I have other code where the number of files the user wants is specified in the program itself, and that works perfectly.
If you see the code below, it splits a file into 5 separate files of equal byte size.
The only thing I want to change is that the user can specify the number of output files, and the program automatically prints the new separate files to that number of output files.
import java.io.*;
import java.util.*;
public class FileSplitter5
public static void main (String [] args)
try
//open input stream
File inputFile = new File(Input.readString("Input Filename:"));
InputStream inStream = new FileInputStream(inputFile);
InputStreamReader inreader = new InputStreamReader(inStream, "8859_1");
BufferedReader reader = new BufferedReader(inreader);
int numOutputFiles = 5;
//open output stream
OutputStream fout= new FileOutputStream(Input.readString("Output Filename:"));
OutputStream bout= new BufferedOutputStream(fout);
OutputStreamWriter out = new OutputStreamWriter(bout, "8859_1");
OutputStream fout1= new FileOutputStream(Input.readString("Output Filename:"));
OutputStream bout1= new BufferedOutputStream(fout1);
OutputStreamWriter out1 = new OutputStreamWriter(bout1, "8859_1");
OutputStream fout2= new FileOutputStream(Input.readString("Output Filename:"));
OutputStream bout2= new BufferedOutputStream(fout2);
OutputStreamWriter out2 = new OutputStreamWriter(bout2, "8859_1");
OutputStream fout3= new FileOutputStream(Input.readString("Output Filename:"));
OutputStream bout3= new BufferedOutputStream(fout3);
OutputStreamWriter out3 = new OutputStreamWriter(bout3, "8859_1");
OutputStream fout4= new FileOutputStream(Input.readString("Output Filename:"));
OutputStream bout4= new BufferedOutputStream(fout4);
OutputStreamWriter out4 = new OutputStreamWriter(bout4, "8859_1");
OutputStreamWriter [] fileHandles = {out, out1, out2, out3, out4};
int fileLength = (int)inputFile.length();
int newFileSize = fileLength/numOutputFiles;
byte [] byteArray = new byte [fileLength];
System.out.println(newFileSize);
//read data in and display them
inStream.read (byteArray);
//initialise the array of bytes
for (int a = 0; a < 5; a++)
     for (int i = (a*newFileSize); i < (a+1)*newFileSize; i++)
         fileHandles[a].write(byteArray);
out.close();
out1.close();
out2.close();
out3.close();
out4.close();
catch (Exception ex) { ex.printStackTrace(); }