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

How to determine whether it is a file in java

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Release： 2019-11-20 11:00:23

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How to determine whether it is a file in java

In java, you can use java.io.File.isFile() to determine whether it is a file. java.io.File.isFile() checks whether the file representing this abstract path name is a normal file.

The following is the declaration of the java.io.File.isFile() method:

public boolean isFile()

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Parameters: NA

Return value

This method returns true if and only if the file representing this abstract pathname is a file, otherwise this method returns false.

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

package com.yiibai;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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For more java knowledge, please pay attention to java basic tutorial.

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