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Determine if a file can be written

  1. /*
  2.   Determine if a file can be written
  3.   This Java example shows how to determine if a particular file
  4.   has a write permission using canWrite method of Java File class.
  5. */
  6.  
  7. import java.io.*;
  8.  
  9. public class DetermineWriteFile {
  10.  
  11.   public static void main(String[] args) {
  12.    
  13.     //create file path
  14.     String filePath = "C:/FileIO/ReadText.txt";
  15.    
  16.     //create File object
  17.     File file = new File(filePath);
  18.    
  19.     /*
  20.      * To determine whether a particular file can be written use,
  21.      * boolean canWrite() method of Java File class.
  22.      *
  23.      * This method returns true IF AND ONLY IF the file exists and it
  24.      * can be written (file has a write permission).
  25.      */
  26.    
  27.     if(file.canWrite())
  28.     {
  29.       System.out.println("File " + file.getPath() +" can be written");
  30.     }
  31.     else
  32.     {
  33.       System.out.println("File " + file.getPath() +" can not be written");
  34.     }
  35.   }
  36. }
  37.  
  38. /*
  39. Output would be
  40. File C:\FileIO\ReadText.txt can be written
  41. */