Java.io.RandomAccessFile.readUTF() Method

Description

The java.io.RandomAccessFile.readUTF() method reads in a string from this file.

Declaration

Following is the declaration for java.io.RandomAccessFile.readUTF() method

public final String readUTF()

Parameters

• NA

Return Value

This method returns a Unicode string.

Exception

• IOException -- if an I/O error occurs.

• EOFException -- if this file reaches the end before reading all the bytes.

• UTFDataFormatException -- if the bytes do not represent valid modified UTF-8 encoding of a Unicode string.

Example

The following example shows the usage of java.io.RandomAccessFile.readUTF() method.

package com.tutorialspoint;

import java.io.*;

public class RandomAccessFileDemo {

   public static void main(String[] args) {
      try {
         // create a new RandomAccessFile with filename test
         RandomAccessFile raf = new RandomAccessFile("c:/test.txt", "rw");

         // write something in the file
         raf.writeUTF("Hello World");

         // set the file pointer at 0 position
         raf.seek(0);

         // print the string
         System.out.println("" + raf.readUTF());

         // set the file pointer at 0 position
         raf.seek(0);

         // write something in the file
         raf.writeUTF("This is an example");

         // set the file pointer at 0 position
         raf.seek(0);

         // print the string
         System.out.println("" + raf.readUTF());
      } catch (IOException ex) {
         ex.printStackTrace();
      }

   }
}

Assuming we have a text file c:/test.txt, which has the following content. This file will be used as an input for our example program:

ABCDE  

Let us compile and run the above program, this will produce the following result:

Hello World
This is an example