Java: convertir archivo a matriz de caracteres

	public static char[] ReadFileToCharArray(String filePath) throws IOException {
		StringBuilder fileData = new StringBuilder(1000);
		BufferedReader reader = new BufferedReader(new FileReader(filePath));
 
		char[] buf = new char[10];
		int numRead = 0;
		while ((numRead = reader.read(buf)) != -1) {
			System.out.println(numRead);
			String readData = String.valueOf(buf, 0, numRead);
			fileData.append(readData);
			buf = new char[1024];
		}
 
		reader.close();
 
		return  fileData.toString().toCharArray();	
	}

carácter estático público[] ReadFileToCharArray (String filePath) lanza IOException {StringBuilder fileData = new StringBuilder (1000); Lector BufferedReader = nuevo BufferedReader (nuevo FileReader (filePath)); carbonizarse[] buf = nuevo carácter[10]; int numRead = 0; while ((numRead = reader.read (buf))! = -1) {System.out.println (numRead); String readData = String.valueOf (buf, 0, numRead); fileData.append (readData); buf = nuevo carácter[1024]; } reader.close (); return fileData.toString (). toCharArray (); }