CLASS FILE UTILITIES / CLASSE UTILITAIRE DE MANIPULATION DE FICHIERS

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;


/**
 * @author Macrosjiu
 *
 */
public class FileLayerUtilities {

	public static void saveInFile(String completePathFile, InputStream in) throws IOException{
		BufferedInputStream bis = new BufferedInputStream(in);
		File file = new File(completePathFile);
		if(!file.exists())
			file.createNewFile();
		
		FileOutputStream stream = new FileOutputStream(completePathFile);
		BufferedOutputStream bos = null;
		try {
			int read_bytes = 0;
			byte[] buffer = new byte[4096];
			bos = new BufferedOutputStream(stream, buffer.length);
			while ( (read_bytes = bis.read(buffer, 0, buffer.length)) != -1) {
				bos.write(buffer,0, read_bytes);        	
			}
		}catch(IOException ex){
			throw new IOException("ERROR IN SAVING FILE !! pathFile : "+file.getAbsolutePath());	
		} finally {
			bos.flush();
			bos.close();
			stream.close();
		}

	}
	
	public static void deleteFile(String completePathFile) throws IOException{
		try{
			File filetoDelete = new File (completePathFile);
			if(filetoDelete.exists()){
					if( ! filetoDelete.delete())
						throw new IOException("ERROR FILE NOT DELETED !! pathFile : "+filetoDelete.getAbsolutePath());
			}
		}catch(IOException ex){
			throw new IOException("Error in deleting file");
		}
	}
	
	public static InputStream readFile(String completePathFile) throws IOException{
		try{
			File file = new File(completePathFile);
	        if(file.exists()){
			    InputStream in = new FileInputStream(file);
	    		//byte myBytes[] = new byte[in.available()];
	    		//in.read(myBytes);   		
	    		//return new String(myBytes);
			    return in;
	        }else{
	        	throw new IOException("FILE TO READ NOT FOUND !! pathFile : "+file.getAbsolutePath());
	        }
		}catch(IOException ex){
			throw new IOException("Error in reading file");
		}
	}

}