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Java RandomAccessFile writeUTF() Method with Example
RandomAccessFile Class writeUTF() method: Here, we are going to learn about the writeUTF() method of RandomAccessFile Class with its syntax and example.
Submitted by Preeti Jain, on March 23, 2020
RandomAccessFile Class writeUTF() method
- writeUTF() method is available in java.io package.
- writeUTF() method is used to write the given string value to the file with the help of updated encoding scheme UTF-8.
- writeUTF() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
- writeUTF() method may throw an exception at the time of writing the string.
IOException: This exception may throw an exception while performing input/output operation.
Syntax:
public final void writeUTF(String s);
Parameter(s):
- String s – represents the string value to write.
Return value:
The return type of this method is void, it returns nothing.
Example:
// Java program to demonstrate the example
// of void writeUTF(String s) method of
// RandomAccessFile
import java.io.*;
class RAFWriteUTF {
public static void main(String[] args) throws Exception {
String str = "Welcome, in Java World!!!";
// Instantiate a random access file
// object with file name and permissions
RandomAccessFile ra_f = new RandomAccessFile("e:/includehelp.txt", "rw");
// By using writeUTF() method is to
// write a string value to the file by using
// UTF encoding scheme
ra_f.writeUTF(str);
// by using seek() method is to
// set the current file indicator
// from where read/write could
// start i.e. we set here 0 so reading
// will be done from 0 till EOF
ra_f.seek(0);
// By using readUTF() method is to
// read a string value from this file
System.out.print("ra_f.readUTF(): " + ra_f.readUTF());
// By using close() method isto
// close this stream ran_f
ra_f.close();
}
}
Output
ra_f.readUTF(): Welcome, in Java World!!!