org.apache.tomcat.util.compat

Class Jre12Compat

java.lang.Object

org.apache.tomcat.util.compat.JreCompat

org.apache.tomcat.util.compat.Jre12Compat

Direct Known Subclasses:

Jre19Compat

public class Jre12Compat
extends JreCompat

Field Summary

Fields inherited from class org.apache.tomcat.util.compat.JreCompat

canonCachesDisabled, canonCachesDisabledLock, getApplicationProtocolMethod, setApplicationProtocolsMethod, USE_CANON_CACHES_CMD_ARG, useCanonCachesField, useCanonCachesFieldLock

Constructor Summary

Constructors

Constructor and Description
Jre12Compat()

Method Summary

Modifier and Type	Method and Description
void	addBootModulePath(java.util.Deque<java.net.URL> classPathUrlsToProcess) Obtains the URLs for all the JARs on the module path when the JVM starts and adds them to the provided Deque.
boolean	canAccess(java.lang.Object base, java.lang.reflect.AccessibleObject accessibleObject) Is the accessibleObject accessible (as a result of appropriate module exports) on the provided instance?
void	disableCachingForJarUrlConnections() Disables caching for JAR URL connections.
protected void	ensureUseCanonCachesFieldIsPopulated()
java.lang.String	getModuleName(java.lang.Class<?> type) What is the module of the given class?
boolean	isCanonCachesDisabled()
boolean	isExported(java.lang.Class<?> type) Is the given class in an exported package?
boolean	isInstanceOfInaccessibleObjectException(java.lang.Throwable t) Test if the provided exception is an instance of java.lang.reflect.InaccessibleObjectException.
boolean	jarFileIsMultiRelease(java.util.jar.JarFile jarFile) Is this JarFile a multi-release JAR file.
java.util.jar.JarFile	jarFileNewInstance(java.io.File f) Creates a new JarFile instance.
int	jarFileRuntimeMajorVersion()

Methods inherited from class org.apache.tomcat.util.compat.JreCompat

callAs, createVirtualThreadBuilder, disableCanonCaches, getApplicationProtocol, getExecutor, getInstance, getUnixDomainSocketAddress, isAlpnSupported, isGraalAvailable, isJre11Available, isJre12Available, isJre16Available, isJre19Available, isJre21Available, isJre22Available, isJre9Available, jarFileNewInstance, openUnixDomainServerSocketChannel, openUnixDomainSocketChannel, setApplicationProtocols, threadBuilderStart

Methods inherited from class java.lang.Object

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

Constructor Detail

Jre12Compat

public Jre12Compat()

Method Detail

isCanonCachesDisabled

public boolean isCanonCachesDisabled()

Overrides:

isCanonCachesDisabled in class JreCompat

ensureUseCanonCachesFieldIsPopulated

protected void ensureUseCanonCachesFieldIsPopulated()

Overrides:

ensureUseCanonCachesFieldIsPopulated in class JreCompat

isInstanceOfInaccessibleObjectException

public boolean isInstanceOfInaccessibleObjectException(java.lang.Throwable t)

Description copied from class: JreCompat

Test if the provided exception is an instance of java.lang.reflect.InaccessibleObjectException.

Overrides:

isInstanceOfInaccessibleObjectException in class JreCompat

Parameters:

t - The exception to test

Returns:

true if the exception is an instance of InaccessibleObjectException, otherwise false

disableCachingForJarUrlConnections

public void disableCachingForJarUrlConnections()
                                        throws java.io.IOException

Description copied from class: JreCompat

Disables caching for JAR URL connections. For Java 8 and earlier, this also disables caching for ALL URL connections.

Overrides:

disableCachingForJarUrlConnections in class JreCompat

Throws:

java.io.IOException - If a dummy JAR URLConnection can not be created

addBootModulePath

public void addBootModulePath(java.util.Deque<java.net.URL> classPathUrlsToProcess)

Description copied from class: JreCompat

Obtains the URLs for all the JARs on the module path when the JVM starts and adds them to the provided Deque.

Overrides:

addBootModulePath in class JreCompat

Parameters:

classPathUrlsToProcess - The Deque to which the modules should be added

jarFileNewInstance

public java.util.jar.JarFile jarFileNewInstance(java.io.File f)
                                         throws java.io.IOException

Description copied from class: JreCompat

Creates a new JarFile instance. When running on Java 9 and later, the JarFile will be multi-release JAR aware.

Overrides:

jarFileNewInstance in class JreCompat

Parameters:

f - The JAR file to open

Returns:

A JarFile instance based on the provided file

Throws:

java.io.IOException - If an I/O error occurs creating the JarFile instance

jarFileIsMultiRelease

public boolean jarFileIsMultiRelease(java.util.jar.JarFile jarFile)

Description copied from class: JreCompat

Is this JarFile a multi-release JAR file.

Overrides:

jarFileIsMultiRelease in class JreCompat

Parameters:

jarFile - The JarFile to test

Returns:

true If it is a multi-release JAR file and is configured to behave as such.

jarFileRuntimeMajorVersion

public int jarFileRuntimeMajorVersion()

Overrides:

jarFileRuntimeMajorVersion in class JreCompat

canAccess

public boolean canAccess(java.lang.Object base,
                         java.lang.reflect.AccessibleObject accessibleObject)

Description copied from class: JreCompat

Is the accessibleObject accessible (as a result of appropriate module exports) on the provided instance?

Overrides:

canAccess in class JreCompat

Parameters:

base - The specific instance to be tested.

accessibleObject - The method/field/constructor to be tested.

Returns:

{code true} if the AccessibleObject can be accessed otherwise {code false}

isExported

public boolean isExported(java.lang.Class<?> type)

Description copied from class: JreCompat

Is the given class in an exported package?

Overrides:

isExported in class JreCompat

Parameters:

type - The class to test

Returns:

Always true for Java 8. true if the enclosing package is exported for Java 9+

getModuleName

public java.lang.String getModuleName(java.lang.Class<?> type)

Description copied from class: JreCompat

What is the module of the given class?

Overrides:

getModuleName in class JreCompat

Parameters:

type - The class to test

Returns:

Always true for Java 8. true if the enclosing package is exported for Java 9+