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Reading UTF - 8 Encoded Data in Java 
 

In this section, you will learn what is UTF - 8 Encoded Data and how does that perform the work.

 

Reading UTF - 8 Encoded Data in Java

                         

Introduction

It supports standard UTF-8 when reading and writing strings through the InputStreamReader and the OutputStreamWriter.  UTF-8 stands for 8-bit Unicode Transformation Format. It is an 8-bit encoding scheme in which the ASCII characters are encoded using an 8-bit (a byte). 

The given program uses standard UTF-8 to read string through the help of InputStreamReader classIt takes a file name, if the given file exists then read it's contents otherwise display the appropriate message like: "File does not exist".

BufferedReader i = new BufferedReader(new InputStreamReader(new FileInputStream(file),"UTF8"));

Here is the code of the program : 

import java.io.*;

 

public class ReadUTF8{
 
  
public static void main(String[] args)throws IOException{
    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
    System.out.print("Enter File name : ");
    String str = in.readLine();
 

    
File file = new File(str);
    if(!file.exists()){
 
     
System.out.println("File does not exist");
 
     
System.exit(0);
   
 
}
    
else
  
  
{
    
  
try{
  
      
BufferedReader i = new BufferedReader(new InputStreamReader
                              (
new FileInputStream(file),"UTF8"));
        String str1 = i.readLine();
  
      
System.out.println("File text : "+ str1);
        System.out.println("Reading Process Completly Successfully.");
 
     
}
   
   

      catch(UnsupportedEncodingException ue){
 
       
System.out.println("Not supported : ");
 
  }

 
     
catch(IOException e){
 
       
System.out.println(e.getMessage());

       }
 
    
}
 
 
}

  }


Output Of the Program:
C:\nisha>javac ReadAccessFile.java

C:\nisha>java ReadUTF8
Enter File name : Filterfile.txt
File text : ??t h i s i s a f i l e
Reading Process Completly Successfully.

C:\nisha>

The above code written in the program creates a instance of the BufferedReader class using the InputStreamReader and FileInputStream classes to read data or contents from the specified file in the specified encoded data format that has been mentioned in above given line of the code(UTF8). This is thrown by the UnsupportedEncodingException exception if the given encoded data format does not support.

Download this example.

                         

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Current Comments

2 comments so far (
post your own) View All Comments Latest 10 Comments:

Hi, am santosh......
I too facing the same problem what the Saurabh has.
pls provide the solution.

thanks

Posted by santosh on Tuesday, 02.6.07 @ 12:57pm | #6373

Hi
i am unable to read the contents from UTF-8 Encoded file.
As it is providing me the junk characters as ???

please provide the better solution

thanks

Posted by Saurabh on Friday, 12.22.06 @ 12:14pm | #1445

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