public boolean saveDate() throws Exception {
		if (!mainFile.createNewFile()) {
			throw new Exception("Cant Create File.");
		}
		if (!mainFile.openWriteHandle()) {
			throw new Exception("Cant Open File.");
		}
		if (!mainFile.writeMainDate()) {
			throw new Exception("Save is Fail.");
		}
		mainFile.closeWriteHandle();
		return true;
	}