Class JavaFeatures

java.lang.Object

one.nio.util.JavaFeatures

public class JavaFeatures
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
private static final MethodHandle	isRecord
private static final MethodHandle	onSpinWait

Constructor Summary

Constructors

Constructor	Description
JavaFeatures()

Method Summary

Modifier and Type	Method	Description
private static MethodHandle	getIsRecord()
private static MethodHandle	getOnSpinWait()
static boolean	isRecord(Class<?> cls)	Calls Class.isRecord() since Java 14 preview
static void	onSpinWait()	Calls Thread.onSpinWait() since Java 9; does nothing otherwise

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

onSpinWait

private static final MethodHandle onSpinWait

isRecord

private static final MethodHandle isRecord

Constructor Details

JavaFeatures

public JavaFeatures()

Method Details

getOnSpinWait

private static MethodHandle getOnSpinWait()

getIsRecord

private static MethodHandle getIsRecord()

onSpinWait

public static void onSpinWait()

Calls Thread.onSpinWait() since Java 9; does nothing otherwise

isRecord

public static boolean isRecord(Class<?> cls)

Calls Class.isRecord() since Java 14 preview

Parameters:

cls - a class object

Returns:

the result of the Class.isRecord() method invoked. It is always false, if the version of the JVM Runtime is less than 14