Java - ByteArrayOutputStream toString()

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Description

The Java ByteArrayOutputStream toString() method converts the stream's contents using the platform's default character set. The malformed-input and unmappable-character sequences are replaced by the default replacement string for the platform's default character set.

Declaration

Following is the declaration for java.io.ByteArrayOutputStream.toString() method −

public String toString()

Parameters

NA

Return Value

This method returns string decoded from the buffer's contents.

Exception

NA

Example 1

The following example shows the usage of Java ByteArrayOutputStream toString() method. We've created a ByteArrayOutputStream reference and then initialized it with ByteArrayOutputStream object. Now we've written a bytearray to output stream using write() method and print the default string representation of the stream using toString() method. Lastly in finally block, we close the stream using close() method.

package com.tutorialspoint;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
public class ByteArrayOutputStreamDemo {
   public static void main(String[] args) throws IOException {
      String str = "";
      
      byte[] bs = {65, 66, 67, 68, 69};
      ByteArrayOutputStream baos = null;
      
      try {
         // create new ByteArrayOutputStream
         baos = new ByteArrayOutputStream();
      
         // write byte array to the output stream
         baos.write(bs);
         
         // converts buffers using default character set
         str = baos.toString();
         
         // print
         System.out.println(str);
         
      } catch(Exception e) {
         // if I/O error occurs
         e.printStackTrace();
      } finally {
         if(baos!=null)
            baos.close();
      }   
   }
}

Output

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

ABCDE

Example 2

The following example shows the usage of Java ByteArrayOutputStream toString() method. We've created a ByteArrayOutputStream reference and then initialized it with ByteArrayOutputStream object. Now we're writing multiple value to output stream and print the default string representation of the stream using toString() method. Lastly in finally block, we close the stream using close() method.

package com.tutorialspoint;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
public class ByteArrayOutputStreamDemo {
   public static void main(String[] args) throws IOException {
      ByteArrayOutputStream baos = null;
      
      try {
         String str = "";
         
         // create new ByteArrayOutputStream
         baos = new ByteArrayOutputStream();
         
         // writing bytes to output stream
         baos.write(75);
         baos.write(65);
         
         // converts buffers using default character set
         str = baos.toString();

         // print
         System.out.println(str);

      } catch(Exception e) {
         // if I/O error occurs
         e.printStackTrace();
      } finally {
         if(baos!=null)
            baos.close();
      }   
   }
}

Output

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

KA