Java FileOutputStream 如果不存在则创建文件 [英] Java FileOutputStream Create File if not exists

问题描述

有没有办法以一种方式使用 FileOutputStream，如果文件(字符串文件名)不存在，那么它会创建它?

Is there a way to use FileOutputStream in a way that if a file (String filename) does not exist, then it will create it?

FileOutputStream oFile = new FileOutputStream("score.txt", false);

推荐答案

如果文件不存在且无法创建(doc)，但它如果可以，将创建它.为了确保您可能应该在创建 FileOutputStream 之前首先测试该文件是否存在(如果不存在，则使用 createNewFile() 创建):

It will throw a FileNotFoundException if the file doesn't exist and cannot be created (doc), but it will create it if it can. To be sure you probably should first test that the file exists before you create the FileOutputStream (and create with createNewFile() if it doesn't):

File yourFile = new File("score.txt");
yourFile.createNewFile(); // if file already exists will do nothing 
FileOutputStream oFile = new FileOutputStream(yourFile, false); 

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