键盘输入，返回字符串

//键盘输入，返回字符串
public String inputFromKeyBoard(){
        String str=null;
        try{
            InputStreamReader inputReader;
            BufferedReader bufReader;
            inputReader = new InputStreamReader(System.in);
            bufReader = new BufferedReader(inputReader);
            str = bufReader.readLine();
        }catch(IOException e){
            e.printStackTrace();
        }
        return str;
    }
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