Question

How to allocate a new ByteBuffer in Java

Answer 1

import java.nio.ByteBuffer;
import java.util.Arrays;

public class MyClass {
    public static void main(String args[]) {
        int capacity = 5;
        try {
            ByteBuffer bb = ByteBuffer.allocateDirect(capacity);
            byte[] barray = { 56, 0, 8, 9, 1 };
            bb = ByteBuffer.wrap(barray);
  
            System.out.println("ByteBuffer: " + Arrays.toString(bb.array()));
            System.out.print("ByteBuffer State: " + bb.toString());
        }
  
        catch (IllegalArgumentException ex) {
            System.out.println(ex.getMessage());
        }
    }
}




/*
run:

ByteBuffer: [56, 0, 8, 9, 1]
ByteBuffer State: java.nio.HeapByteBuffer[pos=0 lim=5 cap=5]

*/

 

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