# Uses of Interface
java.lang.foreign.ValueLayout.OfLong

Packages that use ValueLayout.OfLongPREVIEW
Package
Description
java.lang.foreign
Provides low-level access to memory and functions outside the Java runtime.

- ## Uses of ValueLayout.OfLongPREVIEW in java.lang.foreign

  Fields in java.lang.foreign declared as ValueLayout.OfLongPREVIEW
  Modifier and Type
  Field
  Description
  `static final ValueLayout.OfLongPREVIEW`
  ValueLayout.`JAVA_LONG`
  A value layout constant whose size is the same as that of a Java `long`, (platform-dependent) byte alignment set to `ADDRESS.byteSize()`, and byte order set to `ByteOrder.nativeOrder()`.
  `static final ValueLayout.OfLongPREVIEW`
  ValueLayout.`JAVA_LONG_UNALIGNED`
  An unaligned value layout constant whose size is the same as that of a Java `long` and byte order set to `ByteOrder.nativeOrder()`.
  Methods in java.lang.foreign that return ValueLayout.OfLongPREVIEW
  Modifier and Type
  Method
  Description
  `ValueLayout.OfLongPREVIEW`
  ValueLayout.OfLong.`withByteAlignment(long byteAlignment)`
  Returns a memory layout with the same characteristics as this layout, but with the given alignment constraint (in bytes).
  `ValueLayout.OfLongPREVIEW`
  ValueLayout.OfLong.`withName(String name)`
  Returns a memory layout with the same characteristics as this layout, but with the given name.
  `ValueLayout.OfLongPREVIEW`
  ValueLayout.OfLong.`withOrder(ByteOrder order)`
  Returns a value layout with the same characteristics as this layout, but with the given byte order.
  `ValueLayout.OfLongPREVIEW`
  ValueLayout.OfLong.`withoutName()`
  Returns a memory layout with the same characteristics as this layout, but with no name.
  Methods in java.lang.foreign with parameters of type ValueLayout.OfLongPREVIEW
  Modifier and Type
  Method
  Description
  `default MemorySegmentPREVIEW`
  SegmentAllocator.`allocate(ValueLayout.OfLongPREVIEW layout, long value)`
  Allocates a memory segment with the given layout and initializes it with the given long value.
  `default MemorySegmentPREVIEW`
  SegmentAllocator.`allocateArray(ValueLayout.OfLongPREVIEW elementLayout, long... elements)`
  Allocates a memory segment with the given layout and initializes it with the given long elements.
  `default long`
  MemorySegment.`get(ValueLayout.OfLongPREVIEW layout, long offset)`
  Reads a long from this segment at the given offset, with the given layout.
  `default long`
  MemorySegment.`getAtIndex(ValueLayout.OfLongPREVIEW layout, long index)`
  Reads a long from this segment at the given index, scaled by the given layout size.
  `default void`
  MemorySegment.`set(ValueLayout.OfLongPREVIEW layout, long offset, long value)`
  Writes a long into this segment at the given offset, with the given layout.
  `default void`
  MemorySegment.`setAtIndex(ValueLayout.OfLongPREVIEW layout, long index, long value)`
  Writes a long into this segment at the given index, scaled by the given layout size.
  `long[]`
  MemorySegment.`toArray(ValueLayout.OfLongPREVIEW elementLayout)`
  Copy the contents of this memory segment into a new long array.