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Java implements creating a folder if it does not exist

王林
Release: 2020-02-05 16:29:34
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Java implements creating a folder if it does not exist

判断文件夹是否存在,不存在则创建文件夹。

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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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扩展:

判断文件是否存在,不存在创建文件

File file=new File("C:\\Users\\QPING\\Desktop\\JavaScript\\2.htm");    
if(!file.exists())    
{    
    try {    
        file.createNewFile();    
    } catch (IOException e) {    
        // TODO Auto-generated catch block    
        e.printStackTrace();  
    }    
}
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