How to determine whether it is a file in java-Javagetting Started-php.cn

How to determine whether it is a file in java

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Release： 2019-11-14 13:23:43

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java.io.File.isFile() Checks whether the file representing this abstract pathname is a normal file.

Indicates that the file of this abstract path name is a file, this method returns true, otherwise this method returns false.

Exception to .lang.String) method denies read access to the file

Example

The following example demonstrates the usage of the java.io.File.isFile() method .

package com.test;

import java.io.File;

public class FileDemo {
   public static void main(String[] args) {
      
      File f = null;
      String path;
      boolean bool = false;
      
      try{
         // create new file
         f = new File("c:");
            
         // true if the file path is a file, else false
         bool = f.isFile();
         
         // get the path
         path = f.getPath();
         
         // prints
         System.out.println(path+" is file? "+ bool);
               
         // create new file
         f = new File("c:/test.txt");
         
         // true if the file path is a file, else false
         bool = f.isFile();
         
         // get the path
         path = f.getPath();
         
         // prints
         System.out.print(path+" is file? "+bool);
         
      }catch(Exception e){
         // if any error occurs
         e.printStackTrace();
      }
   }
}

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Let us compile and run the above program, which will produce the following results:

c: is file? false
c:est.txt is file? true

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