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Determine whether a folder exists in java, create it if it does not exist

王林
Release: 2019-11-28 11:50:39
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Determine whether a folder exists in java, create it if it does not exist

判断思路:

首先将需要判断的文件夹路径保存到一个对象中,然后调用“exists”和“isDirectory”方法判断是否为文件夹且是否存在,若不是文件夹或不存在则调用“mkdir”方法创建文件夹。

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具体示例如下:

File file =new File("C:\\Users\\QPING\\Desktop\\JavaScript");    //如果文件夹不存在则创建    
if  (!file .exists()  && !file .isDirectory()) {    
    System.out.println("//不存在");      
    file .mkdir();    
} else   {      
    System.out.println("//目录存在"); 
}
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