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
class. It 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());
}
}
}
}
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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>
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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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