方法1：通过 Scanner
javaScanner input = new Scanner(System.in);String s = input.nextLine();input.close();
方法2：通过 BufferedReader
javaBufferedReader input = new BufferedReader(new InputStreamReader(System.in)); String s = input.readLine();
方法1：通过 Scanner
javaScanner input = new Scanner(System.in);String s = input.nextLine();input.close();
方法2：通过 BufferedReader
javaBufferedReader input = new BufferedReader(new InputStreamReader(System.in)); String s = input.readLine();
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