Interface ValueLayout.OfDouble

All Superinterfaces:: MemoryLayout, ValueLayout

Enclosing interface:: ValueLayout

public static sealed interface ValueLayout.OfDouble extends ValueLayout

A value layout whose carrier is double.class.

Since:

See Also:

Nested Class Summary

Nested classes/interfaces declared in interface MemoryLayout

MemoryLayout.PathElement

Modifier and Type	Interface	Description
`static interface`	`MemoryLayout.PathElement`	An element in a layout path.

Nested classes/interfaces declared in interface ValueLayout

ValueLayout.OfBoolean, ValueLayout.OfByte, ValueLayout.OfChar, ValueLayout.OfDouble, ValueLayout.OfFloat, ValueLayout.OfInt, ValueLayout.OfLong, ValueLayout.OfShort

Modifier and Type	Interface	Description
`static interface`	`ValueLayout.OfBoolean`	A value layout whose carrier is `boolean.class`.
`static interface`	`ValueLayout.OfByte`	A value layout whose carrier is `byte.class`.
`static interface`	`ValueLayout.OfChar`	A value layout whose carrier is `char.class`.
`static interface`	`ValueLayout.OfDouble`	A value layout whose carrier is `double.class`.
`static interface`	`ValueLayout.OfFloat`	A value layout whose carrier is `float.class`.
`static interface`	`ValueLayout.OfInt`	A value layout whose carrier is `int.class`.
`static interface`	`ValueLayout.OfLong`	A value layout whose carrier is `long.class`.
`static interface`	`ValueLayout.OfShort`	A value layout whose carrier is `short.class`.

Field Summary

Fields declared in interface ValueLayout

ADDRESS, ADDRESS_UNALIGNED, JAVA_BOOLEAN, JAVA_BYTE, JAVA_CHAR, JAVA_CHAR_UNALIGNED, JAVA_DOUBLE, JAVA_DOUBLE_UNALIGNED, JAVA_FLOAT, JAVA_FLOAT_UNALIGNED, JAVA_INT, JAVA_INT_UNALIGNED, JAVA_LONG, JAVA_LONG_UNALIGNED, JAVA_SHORT, JAVA_SHORT_UNALIGNED

Modifier and Type	Field	Description
`static final AddressLayout`	`ADDRESS`	An address layout constant whose size is the same as that of a machine address (`size_t`), byte alignment set to `sizeof(size_t)`, byte order set to `ByteOrder.nativeOrder()`.
`static final AddressLayout`	`ADDRESS_UNALIGNED`	An unaligned address layout constant whose size is the same as that of a machine address (`size_t`), and byte order set to `ByteOrder.nativeOrder()`.
`static final ValueLayout.OfBoolean`	`JAVA_BOOLEAN`	A value layout constant whose size is the same as that of a Java `boolean`, byte alignment set to 1, and byte order set to `ByteOrder.nativeOrder()`.
`static final ValueLayout.OfByte`	`JAVA_BYTE`	A value layout constant whose size is the same as that of a Java `byte`, byte alignment set to 1, and byte order set to `ByteOrder.nativeOrder()`.
`static final ValueLayout.OfChar`	`JAVA_CHAR`	A value layout constant whose size is the same as that of a Java `char`, byte alignment set to 2, and byte order set to `ByteOrder.nativeOrder()`.
`static final ValueLayout.OfChar`	`JAVA_CHAR_UNALIGNED`	An unaligned value layout constant whose size is the same as that of a Java `char` and byte order set to `ByteOrder.nativeOrder()`.
`static final ValueLayout.OfDouble`	`JAVA_DOUBLE`	A value layout constant whose size is the same as that of a Java `double`, byte alignment set to 8, and byte order set to `ByteOrder.nativeOrder()`.
`static final ValueLayout.OfDouble`	`JAVA_DOUBLE_UNALIGNED`	An unaligned value layout constant whose size is the same as that of a Java `double` and byte order set to `ByteOrder.nativeOrder()`.
`static final ValueLayout.OfFloat`	`JAVA_FLOAT`	A value layout constant whose size is the same as that of a Java `float`, byte alignment set to 4, and byte order set to `ByteOrder.nativeOrder()`.
`static final ValueLayout.OfFloat`	`JAVA_FLOAT_UNALIGNED`	An unaligned value layout constant whose size is the same as that of a Java `float` and byte order set to `ByteOrder.nativeOrder()`.
`static final ValueLayout.OfInt`	`JAVA_INT`	A value layout constant whose size is the same as that of a Java `int`, byte alignment set to 4, and byte order set to `ByteOrder.nativeOrder()`.
`static final ValueLayout.OfInt`	`JAVA_INT_UNALIGNED`	An unaligned value layout constant whose size is the same as that of a Java `int` and byte order set to `ByteOrder.nativeOrder()`.
`static final ValueLayout.OfLong`	`JAVA_LONG`	A value layout constant whose size is the same as that of a Java `long`, byte alignment set to 8, and byte order set to `ByteOrder.nativeOrder()`.
`static final ValueLayout.OfLong`	`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()`.
`static final ValueLayout.OfShort`	`JAVA_SHORT`	A value layout constant whose size is the same as that of a Java `short`, byte alignment set to 2, and byte order set to `ByteOrder.nativeOrder()`.
`static final ValueLayout.OfShort`	`JAVA_SHORT_UNALIGNED`	An unaligned value layout constant whose size is the same as that of a Java `short` and byte order set to `ByteOrder.nativeOrder()`.

Method Summary

Modifier and Type	Method	Description
`ValueLayout.OfDouble`	`withByteAlignment(long byteAlignment)`	Returns a memory layout with the same characteristics as this layout, but with the given alignment constraint (in bytes).
`ValueLayout.OfDouble`	`withName(String name)`	Returns a memory layout with the same characteristics as this layout, but with the given name.
`ValueLayout.OfDouble`	`withOrder(ByteOrder order)`	Returns a value layout with the same characteristics as this layout, but with the given byte order.
`ValueLayout.OfDouble`	`withoutName()`	Returns a memory layout with the same characteristics as this layout, but with no name.

Methods declared in interface MemoryLayout

arrayElementVarHandle, byteAlignment, byteOffset, byteOffsetHandle, byteSize, equals, hashCode, name, scale, scaleHandle, select, sliceHandle, toString, varHandle

Modifier and Type	Method	Description
`VarHandle`	`arrayElementVarHandle(MemoryLayout.PathElement... elements)`	Creates a var handle that accesses adjacent elements in a memory segment at offsets selected by the given layout path, where the accessed elements have this layout, and where the initial layout in the path is this layout.
`long`	`byteAlignment()`	Returns the alignment constraint associated with this layout, expressed in bytes.
`long`	`byteOffset(MemoryLayout.PathElement... elements)`	Computes the offset, in bytes, of the layout selected by the given layout path, where the initial layout in the path is this layout.
`MethodHandle`	`byteOffsetHandle(MemoryLayout.PathElement... elements)`	Creates a method handle that computes the offset, in bytes, of the layout selected by the given layout path, where the initial layout in the path is this layout.
`long`	`byteSize()`	Returns the layout size, in bytes.
`boolean`	`equals(Object other)`	Compares the specified object with this layout for equality.
`int`	`hashCode()`	Returns the hash code value for this layout.
`Optional<String>`	`name()`	Returns the name (if any) associated with this layout.
`long`	`scale(long offset, long index)`	Returns `offset + (byteSize() * index)`.
`MethodHandle`	`scaleHandle()`	Returns a method handle that can be used to invoke `MemoryLayout.scale(long, long)` on this layout.
`MemoryLayout`	`select(MemoryLayout.PathElement... elements)`	Returns the layout selected from the provided path, where the initial layout in the path is this layout.
`MethodHandle`	`sliceHandle(MemoryLayout.PathElement... elements)`	Creates a method handle which, given a memory segment, returns a slice corresponding to the layout selected by the given layout path, where the initial layout in the path is this layout.
`String`	`toString()`	Returns the string representation of this layout.
`VarHandle`	`varHandle(MemoryLayout.PathElement... elements)`	Creates a var handle that accesses a memory segment at the offset selected by the given layout path, where the initial layout in the path is this layout.

Methods declared in interface ValueLayout

carrier, order, varHandle

Modifier and Type	Method	Description
`Class<?>`	`carrier()`	Returns the carrier associated with this value layout.
`ByteOrder`	`order()`	Returns the value's byte order.
`VarHandle`	`varHandle()`	Returns a var handle which can be used to access values described by this value layout, in a given memory segment.

Method Details

withName

ValueLayout.OfDouble withName(String name)

Returns a memory layout with the same characteristics as this layout, but with the given name.

Specified by:

withName in interface MemoryLayout

Specified by:

withName in interface ValueLayout

Parameters:

name - the layout name

Returns:

a memory layout with the same characteristics as this layout, but with the given name

See Also:

withoutName

ValueLayout.OfDouble withoutName()

Returns a memory layout with the same characteristics as this layout, but with no name.

Specified by:

withoutName in interface MemoryLayout

Specified by:

withoutName in interface ValueLayout

Returns:

a memory layout with the same characteristics as this layout, but with no name

See Also:

withByteAlignment

ValueLayout.OfDouble withByteAlignment(long byteAlignment)

Returns a memory layout with the same characteristics as this layout, but with the given alignment constraint (in bytes).

Specified by:: withByteAlignment in interface MemoryLayout
Specified by:: withByteAlignment in interface ValueLayout
Parameters:: byteAlignment - the layout alignment constraint, expressed in bytes
Returns:: a memory layout with the same characteristics as this layout, but with the given alignment constraint (in bytes)
Throws:: IllegalArgumentException - if byteAlignment is not a power of two

withOrder

ValueLayout.OfDouble withOrder(ByteOrder order)

Returns a value layout with the same characteristics as this layout, but with the given byte order.

Specified by:: withOrder in interface ValueLayout
Parameters:: order - the desired byte order
Returns:: a value layout with the same characteristics as this layout, but with the given byte order

© 1993, 2025, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.