Question

How to convert ByteBuffer to byte array in Java

Answer 1

import java.nio.ByteBuffer;
import java.io.UnsupportedEncodingException;

public class MyClass {
    public static void main(String args[]) throws UnsupportedEncodingException  {
        String s = "Java programming";
        
        ByteBuffer bbuffer = ByteBuffer.wrap(s.getBytes("UTF-8"));

        byte[] array = new byte[bbuffer.remaining()];
        bbuffer.get(array);
        bbuffer.rewind();
        
        for (byte ch : array) {
            System.out.print(ch + " ");
        }
    }
}



/*
run:

74 97 118 97 32 112 114 111 103 114 97 109 109 105 110 103 

*/

 

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