在Java中使用不同的名称创建新的文本文件 [英] Create New Text Files with Different Names in Java

问题描述

每次执行代码时，我都希望创建一个新的文本文件.

Every time the code is executed I want a new Text File to be created.

该文本文件应称为Person1.

The Text File should be called Person1.

下次执行代码时，文本文件应称为Person2.

Next time code is executed the Text File should be called Person2.

然后再次将文本文件命名为Person3.等，等等.

Then again the Text File should be called Person3. etc, etc....

目前，我可以创建一个名为"Person1"的文本文件，但不能创建另一个名为"Person2"的文本文件.

At the moment, I'm able to create a Text File named "Person1" but can't create another Text File named "Person2".

private int fileNumber = 1;
fileNumber = fileNumber++;

public static void main(String[] args) {
        try {
            FileWriter fw = new FileWriter("Person" + fileNumber + ".txt");
            PrintWriter pw = new PrintWriter(fw);

            pw.println("Hello you created a text file");

            pw.close();
        }
        catch (IOException e)
        {
            System.out.println("Error!");

        }
}

推荐答案

检查文件.如果存在，则增加索引

Check for the file. If exists then increment the index

File file = new File("E:\\" + "Person1" + ".txt");
int increase=1;
while(file.exists()){
     increase++;
     file = new File("E:\\" + "Person" + increase+ ".txt");
} 
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){
   }

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