Copying Integer to a file

[Vaibhav Singhl]

package script;
import java.io.*;

import java.util.Calendar;
import java.io.*;
import java.text.SimpleDateFormat;
import java.io.RandomAccessFile;
import java.io.IOException;


public class DateUtils {
//This function will give the current date time in our required format	
  public static final String DATE_FORMAT_NOW = "ddMMyyyy";																		
  public static String now() {
    Calendar cal = Calendar.getInstance();
    SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT_NOW);
    return sdf.format(cal.getTime());
  }

  public static void  main(String arg[]) {
		  try{
			 		   
																 
			  RandomAccessFile br = new RandomAccessFile("/C:/SMMC/Sources/charge_SMMC_"+ DateUtils.now() +".dat", "rw");
//It will create a file at desired location where all files will be merged
			  RandomAccessFile out = new RandomAccessFile("/C:/SMMC/Destination/charge_SMMC_"+ DateUtils.now() +".dat", "rw");
//It will create a file at desired location where all files will be merged
				
					int c,d,e,f,t=0,count=2,r=0;
					  while ((c = br.read()) != -1){
				      br.seek(t);                              
				      c = br.read();                     
				      d = br.read();
				      e = br.read();
				      f = br.read();
				      t++;
				      br.seek(t);
				      char c1 = (char)c;
				      
				      char d1 = (char)d;
				      char e1 = (char)e;
				      char f1 = (char)f;
				      char[] chars = {c1,d1,e1,f1};
				      
				      String covertedChars = new String(chars);
				     
				      if (covertedChars.equals("BTS|")){
				    	  
				          
				    	   out.write(c);
				    	   out.write(d);
				    	   out.write(e);
				    	   out.write(f);
				    	   
				    	//char ch = (char)count;
				    	  //out.write(ch);
				    	  
				    	   //out.write("|".getBytes());
				    	   t=t+3;
				    	   br.seek(t);
				    	   f=br.read();
				    	   char f2 = (char)f;
				    	   while(f2!='|')
				    	   {  
				    	 		  
					    	   if(r==0) {
					    		  
					    		  // out.write(count);
					    		  out.write(count);
					    		   r++;
					    	   }
				    		
				    		   t++;
					    	   br.seek(t);
					    	   f=br.read();
					    	   f2 = (char)f;
					    	 }
				    	   out.write(f);
				    	   while ((f = br.read()) != -1) {
					    		  out.seek(out.length()); 
					    		  out.write(f); 
				      }   
									    	
				    	 
				      }
					  }
					  br.close();
					  out.close();
					 
					  
					 
					
			
			 
		  	}	     	catch (Exception e){
		  		System.err.println("Error: " + e.getMessage());
		  	}
		  	}
}

----------------------------------------------------------------------------------------------------
My problem is I am unable to write integer to file, it is using as unicode, Can someone help me with the problem.

Thanks in advance!!

[Anayonkar Shivalkar]

Hi Vaibhav Singhl,

First things first : Welcome to CodeRanch!

When you post codes in your posts, please UseCodeTags. You can still go and edit your post.

Further, I don't really understand why you require all those variables - c,d,e,f,c1,d1 and so on. An array of variables(with a sensible name) would be better.

That said, let's come to your issue. Integer is not being written to file.

I would advice two things:
1) Try to debug the code.
2) Please go through documentation of write(int) method of RandomAccessFile class. There you'll find what exactly it does. Also, documentation would also give you hints about how to write integer to file directly.

I hope this helps.

[Vaibhav Singhl]

Thanks Anayonkar for the help,

It would be very helpful if you can help me with writeInt() method. I tried but I am unable to get it work.

[Vaibhav Singhl]

Thanks for the help it worked though tried differently.

package script;
import java.io.*;

import java.util.Calendar;
import java.io.*;
import java.text.SimpleDateFormat;
import java.io.RandomAccessFile;
import java.io.IOException;


public class DateUtils {
//This function will give the current date time in our required format	
  public static final String DATE_FORMAT_NOW = "ddMMyyyy";																		
  public static String now() {
    Calendar cal = Calendar.getInstance();
    SimpleDateFormat sdf = new SimpleDateFormat(DATE_FORMAT_NOW);
    return sdf.format(cal.getTime());
  }

  public static void  main(String arg[]) {
		  try{
			 		   
																 
			  RandomAccessFile br = new RandomAccessFile("/C:/SMMC/Sources/charge_SMMC_"+ DateUtils.now() +".dat", "rw");
//It will create a file at desired location where all files will be merged
			  RandomAccessFile out = new RandomAccessFile("/C:/SMMC/Destination/charge_SMMC_"+ DateUtils.now() +".dat", "rw");
//It will create a file at desired location where all files will be merged
				
					int c,d,e,f,t=0,count=4,r=0;
					  while ((c = br.read()) != -1){
				      br.seek(t);                              
				      c = br.read();                     
				      d = br.read();
				      e = br.read();
				      f = br.read();
				      t++;
				      br.seek(t);
				      char c1 = (char)c;
				      
				      char d1 = (char)d;
				      char e1 = (char)e;
				      char f1 = (char)f;
				      char[] chars = {c1,d1,e1,f1};
				      
				      String covertedChars = new String(chars);
				     
				      if (covertedChars.equals("BTS|")){
				    	  
				          
				    	   out.write(c);
				    	   out.write(d);
				    	   out.write(e);
				    	   out.write(f);
				    	   
				    	//char ch = (char)count;
				    	  //out.write(ch);
				    	  
				    	   //out.write("|".getBytes());
				    	   t=t+3;
				    	   br.seek(t);
				    	   f=br.read();
				    	   char f2 = (char)f;
				    	   while(f2!='|')
				    	   {  
				    	 		  
					    	   if(r==0) {
					    		   String s = Integer.toString(count);
					    		   byte a[] = s.getBytes();

					    		   for(int i=0; i< a.length;i++)
					    		    out.write(a[i]);
					    		  
					    		   r++;
					    	   }
				    		
				    		   t++;
					    	   br.seek(t);
					    	   f=br.read();
					    	   f2 = (char)f;
					    	 }
				    	   out.write(f);
				    	   while ((f = br.read()) != -1) {
					    		  out.seek(out.length()); 
					    		  out.write(f); 
				      }   
									    	
				    	 
				      }
					  }
					  br.close();
					  out.close();
					 
					  
					 
					
			
			 
		  	}	     	catch (Exception e){
		  		System.err.println("Error: " + e.getMessage());
		  	}
		  	}
}

[Campbell Ritchie]

Anayonkar Shivalkar wrote: . . . please UseCodeTags. . . . .

I see you have found the code button. Please don’t post such long lines; they are difficult to read on most screens. And avoid tabs for indentation; use spaces instead.