Here you can find the source of copyDoubleBufferAsByteBuffer( DoubleBuffer paramDoubleBuffer)
public static ByteBuffer copyDoubleBufferAsByteBuffer( DoubleBuffer paramDoubleBuffer)
//package com.java2s; import java.nio.ByteBuffer; import java.nio.ByteOrder; import java.nio.DoubleBuffer; public class Main { public static ByteBuffer copyDoubleBufferAsByteBuffer( DoubleBuffer paramDoubleBuffer) { ByteBuffer localByteBuffer = newByteBuffer(paramDoubleBuffer .remaining() * 8);//from ww w .j av a2s . c o m paramDoubleBuffer.mark(); localByteBuffer.asDoubleBuffer().put(paramDoubleBuffer); paramDoubleBuffer.reset(); localByteBuffer.rewind(); return localByteBuffer; } public static ByteBuffer newByteBuffer(int paramInt) { ByteBuffer localByteBuffer = ByteBuffer.allocateDirect(paramInt); localByteBuffer.order(ByteOrder.nativeOrder()); return localByteBuffer; } }