【输入输出】读取写入文件的常用代码

/**
	 * 读取文件的函数
	 * 
	 * @param args
	 */
	public static boolean readFile() {

		try {
			Scanner input = new Scanner(new File("input.txt"));

			
			
			n = input.nextInt();
			k = input.nextInt();

			oil = n;
			
			nextOil = new int[k + 1];

			for (int i = 0; i <= k; i++) {
				nextOil[i] = input.nextInt();

			}

		} catch (FileNotFoundException e) {
			System.out.println("读取文件出错");
			return false;

		}

		return true;
	}

	public static boolean writeFile(String s) {

		// 输出部分
		try {
			Formatter output = new Formatter("output.txt");
			output.format(s);
			output.close(); // 一定要写，不写就输不出来

		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			return false;
		}
		return true;
	}