java中后面的代码怎么才能使用，前面代码创建的文件呢。

Question

问题遇到的现象和发生背景

我想先复制成一个.properties文件。然后用ResourceBundle类再存到properties集合中。

代码

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

        try (FileReader fr = new FileReader("test3_1.txt");
             FileWriter fw = new FileWriter("day16Model\\src\\test3_1.properties")) {
            int num;
            while ((num = fr.read()) != -1) {
                fw.write(num);
                fw.flush();
            }

        } catch (IOException e) {
            System.out.println(e);
        }

        Thread.sleep(5000);

        File file = new File("day16Model\\src\\test3_1.properties");

        if (file.exists()) {

            ResourceBundle test = ResourceBundle.getBundle("test3_1");//没有加载出来
            Properties pro = new Properties();
            Set<String> keys = test.keySet();

            for (String key : keys) {

                System.out.println(key+"----"+test.getString(key));
                pro.setProperty(key, test.getString(key));

            }

            System.out.println(pro);

        } else {

            System.out.println("文件不存在");

        }
    }

运行结果及报错内容

我的解答思路和尝试过的方法

前面代码中新建的.properties文件，后面代码的ResourceBundle获取对象时报错了。

我想要达到的结果

java中后面的代码怎么才能使用，前面代码创建的文件呢。

Answer 1

public static void main(String[] args) throws InterruptedException {
        try (FileReader fr = new FileReader("test3_1.txt");
             FileWriter fw = new FileWriter("src/test3_1.properties")) {
            int num;
            while ((num = fr.read()) != -1) {
                fw.write(num);
                fw.flush();
            }
        } catch (IOException e) {
            System.out.println(e);
        }
        Thread.sleep(5000);
        File file = new File("src/test3_1.properties");
        if (file.exists()) {
            ResourceBundle test = ResourceBundle.getBundle("test3_1");//没有加载出来
            Properties pro = new Properties();
            Set<String> keys = test.keySet();
            for (String key : keys) {
                System.out.println(key+"----"+test.getString(key));
                pro.setProperty(key, test.getString(key));
            }
            System.out.println(pro);
        } else {
            System.out.println("文件不存在");
        }
    }