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File create file problem

2022-04-21 22:10:00 【Can't learn WOW】

File f1 = new File("demo1\\javase\\j1.txt");//C:\java_dev\apache-tomcat-10.0.16\File_01 It's hidden here File_01 The absolute path of 
System.out.println(f1.createNewFile());// However, using createNewFile Only files can be created , And when the previous directory is created 
// The following is the error of directly creating the report

$[ Failed to transfer the external chain picture , The origin station may have anti-theft chain mechanism , It is suggested to save the pictures and upload them directly (img-DFW0L4fu-1650288811398)(C:\Users\86159\AppData\Roaming\Typora\typora-user-images\image-20220418212252824.png)]$

File f1 = new File("demo1\\javase\\j1.txt");
System.out.println(f1.mkdirs());

Let's change it to mkdirs(). Find the following

$[ Failed to transfer the external chain picture , The origin station may have anti-theft chain mechanism , It is suggested to save the pictures and upload them directly (img-lYu1PWem-1650288746071)(C:\Users\86159\AppData\Roaming\Typora\typora-user-images\image-20220418212733156.png)]$

j1.txt Becomes the name of the directory .

The right thing to do is ：

File f1 = new File("demo1\\javase");
System.out.println(f1.mkdirs());
File file = new File(f1, "j1.txt");
System.out.println(file.createNewFile());

$[ Failed to transfer the external chain picture , The origin station may have anti-theft chain mechanism , It is suggested to save the pictures and upload them directly (img-eqmCRqOz-1650288746072)(C:\Users\86159\AppData\Roaming\Typora\typora-user-images\image-20220418213030335.png)]$

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File create file problem

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