java - 在java中增加文本文件名

Question

我正在尝试递增文本文件名，以便创建的所有文本文件都将具有唯一的名称并按升序排列。这是我到目前为止的代码。我希望你能理解我在这里尝试的逻辑。问题要么是程序正在锁定，要么是这段代码什么都不做。谢谢。

increase是一个0的全局整数

    String name = String.valueOf(increase);
    File file = new File("E:\\" + name + ".txt");

    while(file.exists()){
         increase++;


    if(!file.exists()) {

        try {

            String content = textfile.toString();
            file.createNewFile();

            FileWriter fw = new FileWriter(file.getAbsoluteFile());
            BufferedWriter bw = new BufferedWriter(fw);
            bw.write(content);
            bw.close();

            System.out.println("Done");

            }catch (IOException e){
                e.printStackTrace();
                }
        }
    }

Answer 1

用代码解释我的评论

String name = String.valueOf(increase);
File file = new File("E:\\" + name + ".txt");

while(file.exists()){
     increase++;
     // reassign file this while will terminate when #.txt doesnt exist
     name = String.valueOf(increase);
     file = new File("E:\\" + name + ".txt");
} // the while should end here
// then we check again that #.txt doesnt exist and try to create it
if(!file.exists()) {

try {

    String content = textfile.toString();
    file.createNewFile();

    FileWriter fw = new FileWriter(file.getAbsoluteFile());
    BufferedWriter bw = new BufferedWriter(fw);
    bw.write(content);
    bw.close();

    System.out.println("Done");

}catch (IOException e){
    e.printStackTrace();
}
// you had a extra close bracket here causing the issue
}
// this program will now create a new text file each time its run in ascending order