Java创建一个新文件，或者覆盖现有文件 [英] Java create a new file, or, override the existing file

问题描述

我想要实现的是创建一个文件，而不管文件是否存在.

What I want to achieve is to create a file regardless of whether the file exists or not.

我尝试使用File.createNewFile()，但这只会在该文件不存在的情况下创建该文件.我应该先使用File.delete()然后使用File.createNewFile()吗?

I tried using File.createNewFile() but that will only create the file if it does not already exists. Should I use File.delete() and then File.createNewFile()?

或者有更清晰的方法吗?

Or is there a clearer way of doing it?

推荐答案

FileWriter的构造函数也需要两个参数:文件名和布尔值.布尔值指示是追加还是覆盖现有文件.这是两个Java FileWriter示例，显示了这一点:

FileWriter has a constructor that takes 2 parameters too: The file name and a boolean. The boolean indicates whether to append or overwrite an existing file. Here are two Java FileWriter examples showing that:

Writer fileWriter = new FileWriter("c:\\data\\output.txt", true);  //appends to file

Writer fileWriter = new FileWriter("c:\\data\\output.txt", false); //overwrites file

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