Java 输入输出新总结

Scanner cin = new Scanner(new BufferedInputStream(System.in));

Scanner cin = new Scanner(new BufferedInputStream(new FileInputStream("E:/temp.txt")));

BufferedReader cin = new BufferedReader(new InputStreamReader(System.in));

BufferedReader cin = new BufferedReader(new InputStreamReader(new FileInputStream("E:/temp.txt")));

PrintWriter out = new PrintWriter(System.out);

PrintWriter out = new PrintWriter(new FileOutputStream("E:/temp.txt"));

System.out.println();