JRE 8 rt.jar - java.* Package Source Code
JRE 8 rt.jar is the JAR file for JRE 8 RT (Runtime) libraries.
JRE (Java Runtime) 8 is the runtime environment included in JDK 8.
JRE 8 rt.jar libraries are divided into 6 packages:
com.* - Internal Oracle and Sun Microsystems libraries java.* - Standard Java API libraries. javax.* - Extended Java API libraries. jdk.* - JDK supporting libraries. org.* - Third party libraries. sun.* - Old libraries developed by Sun Microsystems.
JAR File Information:
Directory of C:\fyicenter\jdk-1.8.0_191\jre\lib
63,596,151 rt.jar
Here is the list of Java classes of the java.* package in JRE 1.8.0_191 rt.jar. Java source codes are also provided.
✍: FYIcenter
⏎ java/lang/management/PlatformComponent.java
/*
* Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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*/
package java.lang.management;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.HashSet;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import javax.management.MBeanServerConnection;
import javax.management.ObjectName;
import com.sun.management.HotSpotDiagnosticMXBean;
import com.sun.management.UnixOperatingSystemMXBean;
import sun.management.ManagementFactoryHelper;
import sun.management.Util;
/**
* This enum class defines the list of platform components
* that provides monitoring and management support.
* Each enum represents one MXBean interface. A MXBean
* instance could implement one or more MXBean interfaces.
*
* For example, com.sun.management.GarbageCollectorMXBean
* extends java.lang.management.GarbageCollectorMXBean
* and there is one set of garbage collection MXBean instances,
* each of which implements both c.s.m. and j.l.m. interfaces.
* There are two separate enums GARBAGE_COLLECTOR
* and SUN_GARBAGE_COLLECTOR so that ManagementFactory.getPlatformMXBeans(Class)
* will return the list of MXBeans of the specified type.
*
* To add a new MXBean interface for the Java platform,
* add a new enum constant and implement the MXBeanFetcher.
*/
enum PlatformComponent {
/**
* Class loading system of the Java virtual machine.
*/
CLASS_LOADING(
"java.lang.management.ClassLoadingMXBean",
"java.lang", "ClassLoading", defaultKeyProperties(),
true, // singleton
new MXBeanFetcher<ClassLoadingMXBean>() {
public List<ClassLoadingMXBean> getMXBeans() {
return Collections.singletonList(ManagementFactoryHelper.getClassLoadingMXBean());
}
}),
/**
* Compilation system of the Java virtual machine.
*/
COMPILATION(
"java.lang.management.CompilationMXBean",
"java.lang", "Compilation", defaultKeyProperties(),
true, // singleton
new MXBeanFetcher<CompilationMXBean>() {
public List<CompilationMXBean> getMXBeans() {
CompilationMXBean m = ManagementFactoryHelper.getCompilationMXBean();
if (m == null) {
return Collections.emptyList();
} else {
return Collections.singletonList(m);
}
}
}),
/**
* Memory system of the Java virtual machine.
*/
MEMORY(
"java.lang.management.MemoryMXBean",
"java.lang", "Memory", defaultKeyProperties(),
true, // singleton
new MXBeanFetcher<MemoryMXBean>() {
public List<MemoryMXBean> getMXBeans() {
return Collections.singletonList(ManagementFactoryHelper.getMemoryMXBean());
}
}),
/**
* Garbage Collector in the Java virtual machine.
*/
GARBAGE_COLLECTOR(
"java.lang.management.GarbageCollectorMXBean",
"java.lang", "GarbageCollector", keyProperties("name"),
false, // zero or more instances
new MXBeanFetcher<GarbageCollectorMXBean>() {
public List<GarbageCollectorMXBean> getMXBeans() {
return ManagementFactoryHelper.
getGarbageCollectorMXBeans();
}
}),
/**
* Memory manager in the Java virtual machine.
*/
MEMORY_MANAGER(
"java.lang.management.MemoryManagerMXBean",
"java.lang", "MemoryManager", keyProperties("name"),
false, // zero or more instances
new MXBeanFetcher<MemoryManagerMXBean>() {
public List<MemoryManagerMXBean> getMXBeans() {
return ManagementFactoryHelper.getMemoryManagerMXBeans();
}
},
GARBAGE_COLLECTOR),
/**
* Memory pool in the Java virtual machine.
*/
MEMORY_POOL(
"java.lang.management.MemoryPoolMXBean",
"java.lang", "MemoryPool", keyProperties("name"),
false, // zero or more instances
new MXBeanFetcher<MemoryPoolMXBean>() {
public List<MemoryPoolMXBean> getMXBeans() {
return ManagementFactoryHelper.getMemoryPoolMXBeans();
}
}),
/**
* Operating system on which the Java virtual machine is running
*/
OPERATING_SYSTEM(
"java.lang.management.OperatingSystemMXBean",
"java.lang", "OperatingSystem", defaultKeyProperties(),
true, // singleton
new MXBeanFetcher<OperatingSystemMXBean>() {
public List<OperatingSystemMXBean> getMXBeans() {
return Collections.singletonList(ManagementFactoryHelper.getOperatingSystemMXBean());
}
}),
/**
* Runtime system of the Java virtual machine.
*/
RUNTIME(
"java.lang.management.RuntimeMXBean",
"java.lang", "Runtime", defaultKeyProperties(),
true, // singleton
new MXBeanFetcher<RuntimeMXBean>() {
public List<RuntimeMXBean> getMXBeans() {
return Collections.singletonList(ManagementFactoryHelper.getRuntimeMXBean());
}
}),
/**
* Threading system of the Java virtual machine.
*/
THREADING(
"java.lang.management.ThreadMXBean",
"java.lang", "Threading", defaultKeyProperties(),
true, // singleton
new MXBeanFetcher<ThreadMXBean>() {
public List<ThreadMXBean> getMXBeans() {
return Collections.singletonList(ManagementFactoryHelper.getThreadMXBean());
}
}),
/**
* Logging facility.
*/
LOGGING(
"java.lang.management.PlatformLoggingMXBean",
"java.util.logging", "Logging", defaultKeyProperties(),
true, // singleton
new MXBeanFetcher<PlatformLoggingMXBean>() {
public List<PlatformLoggingMXBean> getMXBeans() {
PlatformLoggingMXBean m = ManagementFactoryHelper.getPlatformLoggingMXBean();
if (m == null) {
return Collections.emptyList();
} else {
return Collections.singletonList(m);
}
}
}),
/**
* Buffer pools.
*/
BUFFER_POOL(
"java.lang.management.BufferPoolMXBean",
"java.nio", "BufferPool", keyProperties("name"),
false, // zero or more instances
new MXBeanFetcher<BufferPoolMXBean>() {
public List<BufferPoolMXBean> getMXBeans() {
return ManagementFactoryHelper.getBufferPoolMXBeans();
}
}),
// Sun Platform Extension
/**
* Sun extension garbage collector that performs collections in cycles.
*/
SUN_GARBAGE_COLLECTOR(
"com.sun.management.GarbageCollectorMXBean",
"java.lang", "GarbageCollector", keyProperties("name"),
false, // zero or more instances
new MXBeanFetcher<com.sun.management.GarbageCollectorMXBean>() {
public List<com.sun.management.GarbageCollectorMXBean> getMXBeans() {
return getGcMXBeanList(com.sun.management.GarbageCollectorMXBean.class);
}
}),
/**
* Sun extension operating system on which the Java virtual machine
* is running.
*/
SUN_OPERATING_SYSTEM(
"com.sun.management.OperatingSystemMXBean",
"java.lang", "OperatingSystem", defaultKeyProperties(),
true, // singleton
new MXBeanFetcher<com.sun.management.OperatingSystemMXBean>() {
public List<com.sun.management.OperatingSystemMXBean> getMXBeans() {
return getOSMXBeanList(com.sun.management.OperatingSystemMXBean.class);
}
}),
/**
* Unix operating system.
*/
SUN_UNIX_OPERATING_SYSTEM(
"com.sun.management.UnixOperatingSystemMXBean",
"java.lang", "OperatingSystem", defaultKeyProperties(),
true, // singleton
new MXBeanFetcher<UnixOperatingSystemMXBean>() {
public List<UnixOperatingSystemMXBean> getMXBeans() {
return getOSMXBeanList(com.sun.management.UnixOperatingSystemMXBean.class);
}
}),
/**
* Diagnostic support for the HotSpot Virtual Machine.
*/
HOTSPOT_DIAGNOSTIC(
"com.sun.management.HotSpotDiagnosticMXBean",
"com.sun.management", "HotSpotDiagnostic", defaultKeyProperties(),
true, // singleton
new MXBeanFetcher<HotSpotDiagnosticMXBean>() {
public List<HotSpotDiagnosticMXBean> getMXBeans() {
return Collections.singletonList(ManagementFactoryHelper.getDiagnosticMXBean());
}
});
/**
* A task that returns the MXBeans for a component.
*/
interface MXBeanFetcher<T extends PlatformManagedObject> {
public List<T> getMXBeans();
}
/*
* Returns a list of the GC MXBeans of the given type.
*/
private static <T extends GarbageCollectorMXBean>
List<T> getGcMXBeanList(Class<T> gcMXBeanIntf) {
List<GarbageCollectorMXBean> list =
ManagementFactoryHelper.getGarbageCollectorMXBeans();
List<T> result = new ArrayList<>(list.size());
for (GarbageCollectorMXBean m : list) {
if (gcMXBeanIntf.isInstance(m)) {
result.add(gcMXBeanIntf.cast(m));
}
}
return result;
}
/*
* Returns the OS mxbean instance of the given type.
*/
private static <T extends OperatingSystemMXBean>
List<T> getOSMXBeanList(Class<T> osMXBeanIntf) {
OperatingSystemMXBean m =
ManagementFactoryHelper.getOperatingSystemMXBean();
if (osMXBeanIntf.isInstance(m)) {
return Collections.singletonList(osMXBeanIntf.cast(m));
} else {
return Collections.emptyList();
}
}
private final String mxbeanInterfaceName;
private final String domain;
private final String type;
private final Set<String> keyProperties;
private final MXBeanFetcher<?> fetcher;
private final PlatformComponent[] subComponents;
private final boolean singleton;
private PlatformComponent(String intfName,
String domain, String type,
Set<String> keyProperties,
boolean singleton,
MXBeanFetcher<?> fetcher,
PlatformComponent... subComponents) {
this.mxbeanInterfaceName = intfName;
this.domain = domain;
this.type = type;
this.keyProperties = keyProperties;
this.singleton = singleton;
this.fetcher = fetcher;
this.subComponents = subComponents;
}
private static Set<String> defaultKeyProps;
private static Set<String> defaultKeyProperties() {
if (defaultKeyProps == null) {
defaultKeyProps = Collections.singleton("type");
}
return defaultKeyProps;
}
private static Set<String> keyProperties(String... keyNames) {
Set<String> set = new HashSet<>();
set.add("type");
for (String s : keyNames) {
set.add(s);
}
return set;
}
boolean isSingleton() {
return singleton;
}
String getMXBeanInterfaceName() {
return mxbeanInterfaceName;
}
@SuppressWarnings("unchecked")
Class<? extends PlatformManagedObject> getMXBeanInterface() {
try {
// Lazy loading the MXBean interface only when it is needed
return (Class<? extends PlatformManagedObject>)
Class.forName(mxbeanInterfaceName, false,
PlatformManagedObject.class.getClassLoader());
} catch (ClassNotFoundException x) {
throw new AssertionError(x);
}
}
@SuppressWarnings("unchecked")
<T extends PlatformManagedObject>
List<T> getMXBeans(Class<T> mxbeanInterface)
{
return (List<T>) fetcher.getMXBeans();
}
<T extends PlatformManagedObject> T getSingletonMXBean(Class<T> mxbeanInterface)
{
if (!singleton)
throw new IllegalArgumentException(mxbeanInterfaceName +
" can have zero or more than one instances");
List<T> list = getMXBeans(mxbeanInterface);
assert list.size() == 1;
return list.isEmpty() ? null : list.get(0);
}
<T extends PlatformManagedObject>
T getSingletonMXBean(MBeanServerConnection mbs, Class<T> mxbeanInterface)
throws java.io.IOException
{
if (!singleton)
throw new IllegalArgumentException(mxbeanInterfaceName +
" can have zero or more than one instances");
// ObjectName of a singleton MXBean contains only domain and type
assert keyProperties.size() == 1;
String on = domain + ":type=" + type;
return ManagementFactory.newPlatformMXBeanProxy(mbs,
on,
mxbeanInterface);
}
<T extends PlatformManagedObject>
List<T> getMXBeans(MBeanServerConnection mbs, Class<T> mxbeanInterface)
throws java.io.IOException
{
List<T> result = new ArrayList<>();
for (ObjectName on : getObjectNames(mbs)) {
result.add(ManagementFactory.
newPlatformMXBeanProxy(mbs,
on.getCanonicalName(),
mxbeanInterface)
);
}
return result;
}
private Set<ObjectName> getObjectNames(MBeanServerConnection mbs)
throws java.io.IOException
{
String domainAndType = domain + ":type=" + type;
if (keyProperties.size() > 1) {
// if there are more than 1 key properties (i.e. other than "type")
domainAndType += ",*";
}
ObjectName on = Util.newObjectName(domainAndType);
Set<ObjectName> set = mbs.queryNames(on, null);
for (PlatformComponent pc : subComponents) {
set.addAll(pc.getObjectNames(mbs));
}
return set;
}
// a map from MXBean interface name to PlatformComponent
private static Map<String, PlatformComponent> enumMap;
private static synchronized void ensureInitialized() {
if (enumMap == null) {
enumMap = new HashMap<>();
for (PlatformComponent pc: PlatformComponent.values()) {
// Use String as the key rather than Class<?> to avoid
// causing unnecessary class loading of management interface
enumMap.put(pc.getMXBeanInterfaceName(), pc);
}
}
}
static boolean isPlatformMXBean(String cn) {
ensureInitialized();
return enumMap.containsKey(cn);
}
static <T extends PlatformManagedObject>
PlatformComponent getPlatformComponent(Class<T> mxbeanInterface)
{
ensureInitialized();
String cn = mxbeanInterface.getName();
PlatformComponent pc = enumMap.get(cn);
if (pc != null && pc.getMXBeanInterface() == mxbeanInterface)
return pc;
return null;
}
private static final long serialVersionUID = 6992337162326171013L;
}
⏎ java/lang/management/PlatformComponent.java
Or download all of them as a single archive file:
File name: jre-rt-java-1.8.0_191-src.zip File size: 6664831 bytes Release date: 2018-10-28 Download
⇒ JRE 8 rt.jar - javax.* Package Source Code
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