PrintWriter：读写同一个文件-文件在再次打开之前不会被保存

Question

.

而不是这样，发生的是：

第一次调用之前:#empty#empty#

public static void main(String[] args) throws IOException {

        SaveGame.saveState("adventure/save/s1.save", new Adventure(), 0);

        SaveGame.saveState("adventure/save/s2.save", new Adventure(), 1);

        SaveGame.saveState("adventure/save/s3.save", new Adventure(), 2);
        }

public class SaveGame {

public static void saveState(String fileName, Adventure a, int slot) throws IOException {   

    //UPDATE MASTER SAVE FILE save.txt
    String[] save = new String[3]; 

    try {
        Scanner openSave = new Scanner(new FileReader("/adventure/save/save.txt"));
        openSave.useDelimiter("#");
        save[0] = openSave.next();
        save[1] = openSave.next();
        save[2] = openSave.next();
        openSave.close();
    }
    catch (FileNotFoundException e) {
        save[0] = "EMPTY";
        save[1] = "EMPTY";
        save[2] = "EMPTY";
    }

    save[slot] = "newString"; //change the CURRENT save in the given slot to the new

    PrintWriter updater = new PrintWriter(new FileWriter("adventure/save/save.txt"));
    updater.println("#" + save[0] + "#" + save[1] + "#" + save[2]);
    updater.flush();
    updater.close();

Answer 1

它完全按照你说的做。每次调用saveState时，将新实例化数组的单个索引设置为“NewString”，并显示该数组。

编辑

对不起，我看错你的代码了。