如何在Java中创建文件 [英] How does file creation work in Java

问题描述

我正在尝试使用创建文件

I am trying to create a file using

File newFile = new File("myFile");

File newFile = new File("myFile");

但是，没有创建名为"myFile"的文件.这在Web应用程序项目中，即要作为WAR进行包装的正确形式，但我将其称为main方法的一部分(只是为了了解其工作原理).

However no file called "myFile" is created. This is within a Web application Project i.e. proper form to be pakaged as a WAR but I am calling it as part of a main method (just to see how this works).

我如何做到这一点，以便在相对于当前文件的位置创建一个新文件，即不必放在绝对路径中.

How can I make it so that a new file is created at a location relative to the current one i.e not have to put in an absolute path.

newFile.createFile();

newFile.createFile();

似乎不起作用:

这是完整的代码:

import java.io.File;
import java.io.IOException;

public class Tester {

public static void main(String[] args) throws IOException{
    Tester test = new Tester();
    test.makeFile();
}

public void makeFile() throws IOException{
    File newFile = new File("myFile");
    newFile.createNewFile();
    }
}

推荐答案

回答您的评论.除非您另外指定，否则将在该进程的当前目录中创建该文件.

In answer to your comment. The file will be created in the current directory of the process, unless you specifiy otherwise.

// new file in current directory
File f = new File("yourFile");
f.createNewFile();
System.out.println("Path:" + f.getAbsolutePath());

要在您选择的目录中创建它，请执行以下操作:

To create it in a directory of your choosing:

File f = new File("c:\\yourDirectory","yourFile");
f.createNewFile();
System.out.println("Path:" + f.getAbsolutePath());

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