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## javax.media.j3d
Class J3DBuffer

    java.lang.Object
      javax.media.j3d.J3DBuffer

    public class J3DBuffer

extends java.lang.Object

Java 3D wrapper class for java.nio.Buffer objects. When used to wrap a non-null NIO buffer object, this class will create a read-only view of the wrapped NIO buffer, and will call `rewind` on the read-only view, so that elements 0 through `buffer.limit()-1` will be available internally.

Since:
  Java 3D 1.3
See Also:
  `GeometryArray.setCoordRefBuffer(J3DBuffer)`, `GeometryArray.setColorRefBuffer(J3DBuffer)`, `GeometryArray.setNormalRefBuffer(J3DBuffer)`, `GeometryArray.setTexCoordRefBuffer(int,J3DBuffer)`, `GeometryArray.setVertexAttrRefBuffer(int,J3DBuffer)`, `GeometryArray.setInterleavedVertexBuffer(J3DBuffer)`, `CompressedGeometry.CompressedGeometry(CompressedGeometryHeader,J3DBuffer)`

Constructor Summary
`J3DBuffer()` Constructs a J3DBuffer object and initializes it with a null NIO buffer object.
`J3DBuffer(java.nio.Buffer buffer)` Constructs a J3DBuffer object and initializes it with the specified NIO buffer object.

Method Summary
`java.nio.Buffer` | `getBuffer()` Retrieves the NIO buffer object from this J3DBuffer.
`void` | `setBuffer(java.nio.Buffer buffer)` Sets the NIO buffer object in this J3DBuffer to the specified object.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### J3DBuffer

    public J3DBuffer()

  Constructs a J3DBuffer object and initializes it with a null NIO buffer object. The NIO buffer object must be set to a non-null value before using this J3DBuffer object in a Java 3D node component.

  Throws:
    `java.lang.UnsupportedOperationException` - if the JVM does not support native access to direct NIO buffers

### J3DBuffer

    public J3DBuffer(java.nio.Buffer buffer)

  Constructs a J3DBuffer object and initializes it with the specified NIO buffer object.

  Parameters:
    `buffer` - the NIO buffer wrapped by this J3DBuffer
  Throws:
    `java.lang.UnsupportedOperationException` - if the JVM does not support native access to direct NIO buffers
    `java.lang.IllegalArgumentException` - if the specified buffer is not a direct buffer, or if the byte order of the specified buffer does not match the native byte order of the underlying platform.

Method Detail

### setBuffer

    public void setBuffer(java.nio.Buffer buffer)

  Sets the NIO buffer object in this J3DBuffer to the specified object.

  Parameters:
    `buffer` - the NIO buffer wrapped by this J3DBuffer
  Throws:
    `java.lang.IllegalArgumentException` - if the specified buffer is not a direct buffer, or if the byte order of the specified buffer does not match the native byte order of the underlying platform.

### getBuffer

    public java.nio.Buffer getBuffer()

  Retrieves the NIO buffer object from this J3DBuffer.

  Returns:
    the current NIO buffer wrapped by this J3DBuffer

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Copyright 1996-2008 Sun Microsystems, Inc. All Rights Reserved. Use is subject to license terms.