Question

我正在尝试读取文件并根据文件的每一行所说的内容执行命令。该文件如下所示：

Add saw cutting tool
Add yen a monetary unit
Add pan a dish
List     


public void Load(String fileName) throws FileNotFoundException{
    BufferedReader r = new BufferedReader (new FileReader(fileName));
    Scanner sc = new Scanner(r);
    while(sc.hasNextLine()){
        while(sc.hasNext()){
            String temp =sc.nextLine();

            **if(temp.startsWith("Add")){
                String word = sc.next().toLowerCase();
                String def = sc.nextLine().toLowerCase();
                Add(word, def);**           

            }else if(temp.equals("List")){
                List();
            }
        }
    }
}

正在打印：

Add saw cutting tool Add yen a monetary unit Add pan a dish

我希望它打印出来像：

saw cutting tool
yen a monetary unit
pan a dish

我知道问题不在印刷品中。问题出在**上面。关于我如何解决这个问题的任何建议？

Answer 1

试试这个

if(temp.startsWith("Add")){
    String word = sc.next().toLowerCase().replaceFirst("All", "");
    String def = sc.nextLine().toLowerCase().replaceFirst("All", "");;
    Add(word, def);
}

Answer 2

Do this way: It might solve your problem:

public void Load(String fileName) throws FileNotFoundException{
        BufferedReader r = new BufferedReader (new FileReader(fileName));
        Scanner sc = new Scanner(r);
        while(sc.hasNextLine()){
            while(sc.hasNext()){
                String temp =sc.nextLine();

                if(temp.startsWith("Add")){
                    temp = temp.replaceAll("Add ", "");
                    String[] word = temp.split("\\s", 2);
                    Add(word[0], word[1]);       

                }else if(temp.equals("List")){
                    System.out.println("List");
                }
            }
        }
    }

来自文件的命令

2 个答案: