Class SystemJarFinder

java.lang.Object

nonapi.io.github.classgraph.classpath.SystemJarFinder

public final class SystemJarFinder
extends Object

A class to find rt.jar and any JRE "lib/" or "ext/" jars.

Field Summary

Fields

Modifier and Type	Field	Description
private static final Set<String>	JRE_LIB_OR_EXT_JARS	The paths of any "lib/" or "ext/" jars found in the JRE.
private static final String	RT_JAR	The path of the first "rt.jar" found.
private static final Set<String>	RT_JARS	The paths of any "rt.jar" files found in the JRE.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	SystemJarFinder()	Constructor.

Method Summary

Modifier and Type	Method	Description
private static boolean	addJREPath(File dir)	Add and search a JRE path.
static Set<String>	getJreLibOrExtJars()	Get the JRE "lib/" and "ext/" jar paths.
static String	getJreRtJarPath()	Get the JRE "rt.jar" path.

Methods inherited from class Object

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

Field Details

RT_JARS

private static final Set<String> RT_JARS

The paths of any "rt.jar" files found in the JRE.

RT_JAR

private static final String RT_JAR

The path of the first "rt.jar" found.

JRE_LIB_OR_EXT_JARS

private static final Set<String> JRE_LIB_OR_EXT_JARS

The paths of any "lib/" or "ext/" jars found in the JRE.

Constructor Details

SystemJarFinder

private SystemJarFinder()

Constructor.

Method Details

addJREPath

private static boolean addJREPath(File dir)

Add and search a JRE path.

Parameters:

dir - the JRE directory

Returns:

true if the directory was readable.

getJreRtJarPath

public static String getJreRtJarPath()

Get the JRE "rt.jar" path.

Returns:

The path of rt.jar (in JDK 7 or 8), or null if it wasn't found (e.g. in JDK 9+).

getJreLibOrExtJars

public static Set<String> getJreLibOrExtJars()

Get the JRE "lib/" and "ext/" jar paths.

Returns:

The paths for any jarfiles found in JRE/JDK "lib/" or "ext/" directories.