Java.io.ByteArrayOutputStream.close() Method

Description

Calling the java.io.ByteArrayOutputStream.close() method has no effect. The methods in this class can be called after close() invocation without generating I/O error.

Declaration

Following is the declaration for java.io.ByteArrayOutputStream.close() method:

public void close()

Parameters

• NA

Return Value

The method doesn't return any value.

Exception

• NA

Example

The following example shows the usage of java.io.ByteArrayOutputStream.close() method.

package com.tutorialspoint;

import java.io.ByteArrayOutputStream;
import java.io.IOException;

public class ByteArrayOutputStreamDemo {
   public static void main(String[] args) throws IOException {
      
      byte[] buf = {65, 66, 67, 68, 69};
      ByteArrayOutputStream baos = null;
      
      try{
         // create new ByteArrayOutputStream
         baos = new ByteArrayOutputStream();
         
         // close is invoked before baos.
         baos.close();
         
         // writing byte array to the output stream
         baos.write(buf);
         
         // print as string
         System.out.print(baos.toString());
         
      }catch(Exception e){

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

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

ABCDE