try{
			FileReader fr = new FileReader("D:\\JAVA\\PPJ\\zajecia\\javac.txt");
			StringBuilder sb = new StringBuilder();
			int b = 0;
			while((b = fr.read())!=-1){
				sb.append((char)b);
			}
			//String regex = "(([0-2]{1}[0-9]{1}[-]{1})|([3]{1}[0-1]{1}[-]{1}))(([0]{1}[1-9]{1}[-]{1})|([1]{1}[0-1]{1}[-]{1}))([0-9]{4})";
			String regex = "(([0-2]{1}[0-9]{1}[-]{1}[0]{1}[1-9]{1}[-]{1}[0-9]{4})|([0-2]{1}[0-9]{1}[-]{1}[1]{1}[0-2]{1}[-]{1}[0-9]{4})|([3]{1}[0-1]{1}[-]{1}[13456789]{1}[-]{1}[0-9]{4}))";
				Pattern p = Pattern.compile(regex);
				Matcher m = p.matcher(sb);
				System.out.print("Czy data sie zgadza?:"+" "+m.matches());
		}
		catch(IOException e){
			System.out.println("IOException");
		}