Determine whether a file or folder exists in java

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();    
    }    
}

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");  
}

if(!file.getParentFile().isDirectory()){
            file.getParentFile().mkdirs();
        }