Java将字符串保存到文件中

public void WriteToFile1() throws Exception {
		String str = "xinxi";
		File file = new File("file\\userConfig.xml");
		FileOutputStream fos = null;
		if (!file.exists()) {
			file.createNewFile();
		}
		fos = new FileOutputStream(file);
		byte bytes[] = new byte[1024];
		bytes = str.getBytes();
		int b = str.length();
		fos.write(bytes, 0, b);
		fos.close();
	}

	public void WriteToFile2() throws Exception {
		String str = "xinxi";
		FileWriter fw = new FileWriter("userConfig.xml", true);
		BufferedWriter bw = new BufferedWriter(fw);
		bw.newLine();
		bw.write(str);
		bw.close();
		fw.close();

	}