import java.nio.*; import java.util.*; public class Demo { public static void main(String[] args) { int n = 5; try { DoubleBuffer buffer = DoubleBuffer.allocate(n); buffer.put(4.5D); buffer.put(1.2D); buffer.put(3.9D); buffer.put(7.5D); buffer.put(5.8D); buffer.rewind(); double[] arr = buffer.array(); System.out.println("The DoubleBuffer is: " + Arrays.toString(arr)); } catch (IllegalArgumentException e) { System.out.println("Error!!! IllegalArgumentException"); } catch (ReadOnlyBufferException e) { System.out.println("Error!!! ReadOnlyBufferException"); } } }