java Programming Glossary: bytebuffer

Java NIO FileChannel versus FileOutputstream performance / usefulness

http://stackoverflow.com/questions/1605332/java-nio-filechannel-versus-fileoutputstream-performance-usefulness

import java.io.InputStream import java.nio.ByteBuffer import java.nio.channels.FileChannel public class JavaNIOTest.. FileChannel f is.getChannel FileChannel f2 fos.getChannel ByteBuffer buf ByteBuffer.allocateDirect 64 1024 long len 0 while len f.read.. is.getChannel FileChannel f2 fos.getChannel ByteBuffer buf ByteBuffer.allocateDirect 64 1024 long len 0 while len f.read buf 1 buf.flip..

Convert integer into byte array (Java)

http://stackoverflow.com/questions/1936857/convert-integer-into-byte-array-java

byte share improve this question Have a look at the ByteBuffer class. ByteBuffer b ByteBuffer.allocate 4 b.order ByteOrder.BIG_ENDIAN.. this question Have a look at the ByteBuffer class. ByteBuffer b ByteBuffer.allocate 4 b.order ByteOrder.BIG_ENDIAN optional.. Have a look at the ByteBuffer class. ByteBuffer b ByteBuffer.allocate 4 b.order ByteOrder.BIG_ENDIAN optional the initial..

Java integer to byte array

http://stackoverflow.com/questions/2183240/java-integer-to-byte-array

byte share improve this question using Java NIO's ByteBuffer is very simple byte bytes ByteBuffer.allocate 4 .putInt 1695609641.. using Java NIO's ByteBuffer is very simple byte bytes ByteBuffer.allocate 4 .putInt 1695609641 .array for byte b bytes System.out.format..

Convert 4 bytes to int

http://stackoverflow.com/questions/2383265/convert-4-bytes-to-int

java data conversion share improve this question ByteBuffer has this capability and is able to work with both little and.. fis.read arr create a byte buffer and wrap the array ByteBuffer bb ByteBuffer.wrap arr if the file uses little endian as apposed.. arr create a byte buffer and wrap the array ByteBuffer bb ByteBuffer.wrap arr if the file uses little endian as apposed to network..

Create thumbnail image for PDF in Java

http://stackoverflow.com/questions/2844961/create-thumbnail-image-for-pdf-in-java

RandomAccessFile file r FileChannel channel raf.getChannel ByteBuffer buf channel.map FileChannel.MapMode.READ_ONLY 0 channel.size..

converting Java bitmap to byte array

http://stackoverflow.com/questions/4989182/converting-java-bitmap-to-byte-array

.get data int size bmp.getRowBytes bmp.getHeight ByteBuffer b ByteBuffer.allocate size bmp.copyPixelsToBuffer b byte bytes.. data int size bmp.getRowBytes bmp.getHeight ByteBuffer b ByteBuffer.allocate size bmp.copyPixelsToBuffer b byte bytes new byte size..

Export PDF pages to a series of images in Java

http://stackoverflow.com/questions/550129/export-pdf-pages-to-a-series-of-images-in-java

java.awt.Transparency import java.io. import java.nio.ByteBuffer import java.nio.channels.FileChannel import javax.swing. import.. RandomAccessFile file r FileChannel channel raf.getChannel ByteBuffer buf channel.map FileChannel.MapMode.READ_ONLY 0 channel.size..

ByteBuffer.allocate() vs. ByteBuffer.allocateDirect()

http://stackoverflow.com/questions/5670862/bytebuffer-allocate-vs-bytebuffer-allocatedirect

vs. ByteBuffer.allocateDirect To allocate or to allocateDirect.. vs. ByteBuffer.allocateDirect To allocate or to allocateDirect that is the.. years now I've just stuck to the thought that since DirectByteBuffer s are a direct memory mapping at OS level that it would perform..

Converting UTF-8 to ISO-8859-1 in Java - how to keep it as single byte

http://stackoverflow.com/questions/655891/converting-utf-8-to-iso-8859-1-in-java-how-to-keep-it-as-single-byte

the char primitive you should only be using byte arrays or ByteBuffer objects. Then you can use java.nio.charset.Charset to convert.. UTF 8 Charset iso88591charset Charset.forName ISO 8859 1 ByteBuffer inputBuffer ByteBuffer.wrap new byte byte 0xC3 byte 0xA2 decode.. Charset.forName ISO 8859 1 ByteBuffer inputBuffer ByteBuffer.wrap new byte byte 0xC3 byte 0xA2 decode UTF 8 CharBuffer data..

Android Camera will not work. startPreview fails

http://stackoverflow.com/questions/7942378/android-camera-will-not-work-startpreview-fails

1.0f 1.0f 1.0f 1.0f initialize vertex Buffer for vertices ByteBuffer vbb ByteBuffer.allocateDirect triangleCoords.length 4 vbb.order.. 1.0f initialize vertex Buffer for vertices ByteBuffer vbb ByteBuffer.allocateDirect triangleCoords.length 4 vbb.order ByteOrder.nativeOrder.. vbb.asFloatBuffer create a floating point buffer from the ByteBuffer vertices.put triangleCoords add the coordinates to the FloatBuffer..