public String reading() {
		String sCurrentLine = null;
		String Allfile = null;
		BufferedReader br = null;
		try {
			br = new BufferedReader(new FileReader("./ChatHistory.txt"));
			while ((sCurrentLine = br.readLine()) != null) {
				if (Allfile == null) {
					Allfile = sCurrentLine;
				} else {
					Allfile = Allfile + "\n" + sCurrentLine;
				}
			}
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (br != null)
					br.close();
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}
		return Allfile;
	}