Package org.apache.lucene.util

Class Constants

java.lang.Object

org.apache.lucene.util.Constants

public final class Constants
extends java.lang.Object

Some useful constants.

Field Summary

Fields

Modifier and Type	Field	Description
static boolean	FREE_BSD	True iff running on FreeBSD
static java.lang.String	JAVA_VENDOR
static java.lang.String	JAVA_VERSION	The value of System.getProperty("java.version").
static boolean	JRE_IS_64BIT	True iff running on a 64bit JVM
static boolean	JRE_IS_MINIMUM_JAVA11
static boolean	JRE_IS_MINIMUM_JAVA8
static boolean	JRE_IS_MINIMUM_JAVA9
private static int	JVM_MAJOR_VERSION
private static int	JVM_MINOR_VERSION
static java.lang.String	JVM_NAME
static java.lang.String	JVM_SPEC_VERSION
static java.lang.String	JVM_VENDOR	JVM vendor info.
static java.lang.String	JVM_VERSION
static boolean	LINUX	True iff running on Linux.
static java.lang.String	LUCENE_MAIN_VERSION	Deprecated. Use Version.LATEST
static java.lang.String	LUCENE_VERSION	Deprecated. Use Version.LATEST
static boolean	MAC_OS_X	True iff running on Mac OS X
static java.lang.String	OS_ARCH
static java.lang.String	OS_NAME	The value of System.getProperty("os.name").
static java.lang.String	OS_VERSION
static boolean	SUN_OS	True iff running on SunOS.
static boolean	WINDOWS	True iff running on Windows.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Constants()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

JVM_VENDOR

public static final java.lang.String JVM_VENDOR

JVM vendor info.

JVM_VERSION

public static final java.lang.String JVM_VERSION

JVM_NAME

public static final java.lang.String JVM_NAME

JVM_SPEC_VERSION

public static final java.lang.String JVM_SPEC_VERSION

JAVA_VERSION

public static final java.lang.String JAVA_VERSION

The value of System.getProperty("java.version").

OS_NAME

public static final java.lang.String OS_NAME

The value of System.getProperty("os.name").

LINUX

public static final boolean LINUX

True iff running on Linux.

WINDOWS

public static final boolean WINDOWS

True iff running on Windows.

SUN_OS

public static final boolean SUN_OS

True iff running on SunOS.

MAC_OS_X

public static final boolean MAC_OS_X

True iff running on Mac OS X

FREE_BSD

public static final boolean FREE_BSD

True iff running on FreeBSD

OS_ARCH

public static final java.lang.String OS_ARCH

OS_VERSION

public static final java.lang.String OS_VERSION

JAVA_VENDOR

public static final java.lang.String JAVA_VENDOR

JVM_MAJOR_VERSION

private static final int JVM_MAJOR_VERSION

JVM_MINOR_VERSION

private static final int JVM_MINOR_VERSION

JRE_IS_64BIT

public static final boolean JRE_IS_64BIT

True iff running on a 64bit JVM

JRE_IS_MINIMUM_JAVA8

public static final boolean JRE_IS_MINIMUM_JAVA8

JRE_IS_MINIMUM_JAVA9

public static final boolean JRE_IS_MINIMUM_JAVA9

JRE_IS_MINIMUM_JAVA11

public static final boolean JRE_IS_MINIMUM_JAVA11

LUCENE_MAIN_VERSION

@Deprecated
public static final java.lang.String LUCENE_MAIN_VERSION

Deprecated.

Use Version.LATEST

This is the internal Lucene version, including bugfix versions, recorded into each segment.

LUCENE_VERSION

@Deprecated
public static final java.lang.String LUCENE_VERSION

Deprecated.

Use Version.LATEST

Don't use this constant because the name is not self-describing!

Constructor Detail

Constants

private Constants()