Files.java

package utils;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;

public class Files {

	/**
	 * @param filePath 
	 * @return the content of the file in a string
	 * @throws java.io.IOException
	 */
	public static String readFileAsString(String filePath) throws java.io.IOException{
	    byte[] buffer = new byte[(int) new File(filePath).length()];
	    BufferedInputStream f = null;
	    try {
	        f = new BufferedInputStream(new FileInputStream(filePath));
	        f.read(buffer);
	    } finally {
	        if (f != null) try { f.close(); } catch (IOException ignored) { }
	    }
	    return new String(buffer);
	}
	  
	static public boolean deleteDirectory(File path) {
	    if( path.exists() ) {
	      File[] files = path.listFiles();
	      for(int i=0; i<files.length; i++) {
	         if(files[i].isDirectory()) {
	           deleteDirectory(files[i]);
	         }
	         else {
	           files[i].delete();
	         }
	      }
	    }
	    return( path.delete() );
	  }
	
	
	static public ArrayList<String> readFileAsList(String filePath){
		ArrayList<String> result = new ArrayList<String>();
		
		try {
			FileInputStream fstream = new FileInputStream(filePath);
			DataInputStream in = new DataInputStream(fstream);
	        BufferedReader br = new BufferedReader(new InputStreamReader(in));
	        String strLine;
	        while ((strLine = br.readLine()) != null)   {
	            result.add(strLine);
	          }
	        in.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
		
		return result;
		
	}
}