Java ObjectInputStream readUTF() Method

The readUTF() method of ObjectInputStream class is used to read a String in UTF(Uniform Text Format) format. It returns the String which is read from objectinputstream in UTF format.

Syntax

Parameter

Returns

The String.

Throws

IOException

UTFDataFormatException

Example 1

import java.io.*;

public class ObjectInputStreamreadUTFExample1 {
   public static void main(String[] args) {
      String str = "javaTpoint";
      
      try {
         FileOutputStream outstream = new FileOutputStream("file1.txt");
         ObjectOutputStream objoutstream = new ObjectOutputStream(outstream);
         //writing content inti file.
         objoutstream.writeUTF(str); 
         objoutstream.writeUTF("welcome to javatpoint");
         objoutstream.flush();
         ObjectInputStream objinstream= new ObjectInputStream(new FileInputStream("file1.txt"));
         //read the first line in textfile return  in UTF format
         System.out.println("" + objinstream.readUTF());
         //read the second line in textfile and return  in UTF format
         System.out.println("" + objinstream.readUTF());
      } catch (Exception ex) {
         ex.printStackTrace();
      }
   }
}

Output:

javaTpoint
welcome to javatpoint

Example 2

import java.io.*; 
  
public class ObjectInputStreamreadUTFExample2 
{ 
    public static void main(String[] args) throws IOException, ClassNotFoundException 
    { 
        FileOutputStream outStream = new FileOutputStream("file1.txt"); 
        ObjectOutputStream objoutStream = new ObjectOutputStream(outStream); 
        ObjectInputStream objinStream  = new ObjectInputStream(new FileInputStream("file1.txt")); 
        objoutStream.writeUTF("Welcome to javaTpoint"); 
        objoutStream.flush(); 
        System.out.println("Use of readUTF() : " + objinStream.readUTF()); 
    } 
} 

Output:

Use of readUTF() : Welcome to javaTpoint

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