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< div id = "app" > <!-- [ --> < div class = "theme-container" > <!-- [ --> < header class = "navbar" > < div class = "toggle-sidebar-button" title = "toggle sidebar" aria-expanded = "false" role = "button" tabindex = "0" > < div class = "icon" aria-hidden = "true" > < span > < / span > < span > < / span > < span > < / span > < / div > < / div > < span > < a href = "/en/" class = "" > <!-- --> < span class = "site-name can-hide" > arthas< / span > < / a > < / span > < div class = "navbar-items-wrapper" style = "" > <!-- [ --> <!-- ] --> < nav class = "navbar-items can-hide" > <!-- [ --> < div class = "navbar-item" > < a href = "/en/" class = "" aria-label = "HOME" > <!-- [ --> <!-- ] --> HOME <!-- [ --> <!-- ] --> < / a > < / div > < div class = "navbar-item" > < a class = "external-link" href = "/doc/arthas-tutorials.html?language=en&id=arthas-basics" rel = "noopener noreferrer" target = "_blank" aria-label = "ONLINE TUTORIALS" > <!-- [ --> <!-- ] --> < span > ONLINE TUTORIALS< / span > < span > < svg class = "external-link-icon" xmlns = "http://www.w3.org/2000/svg" aria-hidden = "true" focusable = "false" x = "0px" y = "0px" viewbox = "0 0 100 100" width = "15" height = "15" > < path fill = "currentColor" d = "M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z" > < / path > < polygon fill = "currentColor" points = "45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9" > < / polygon > < / svg > < span class = "external-link-icon-sr-only" > open in new window< / span > < / span > <!-- [ --> <!-- ] --> < / a > < / div > < div class = "navbar-item" > < a href = "/en/doc" class = "router-link-active" aria-label = "DOCS" > <!-- [ --> <!-- ] --> DOCS <!-- [ --> <!-- ] --> < / a > < / div > < div class = "navbar-item" > < div class = "navbar-dropdown-wrapper" > < button class = "navbar-dropdown-title" type = "button" aria-label = "SOLUTIONS" > < span class = "title" > SOLUTIONS< / span > < span class = "arrow down" > < / span > < / button > < button class = "navbar-dropdown-title-mobile" type = "button" aria-label = "SOLUTIONS" > < span class = "title" > SOLUTIONS< / span > < span class = "right arrow" > < / span > < / button > < ul style = "display:none;" class = "navbar-dropdown" > <!-- [ --> < li class = "navbar-dropdown-item" > < a class = "external-link" href = "https://cn.aliyun.com/product/aliware/mse?spm=arthas.topbar.0.0.0" rel = "noopener noreferrer" target = "_blank" aria-label = "Microservice solutions" > <!-- [ --> <!-- ] --> < span > Microservice solutions< / span > < span > < svg class = "external-link-icon" xmlns = "http://www.w3.org/2000/svg" aria-hidden = "true" focusable = "false" x = "0px" y = "0px" viewbox = "0 0 100 100" width = "15" height = "15" > < path fill = "currentColor" d = "M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z" > < / path > < polygon fill = "currentColor" points = "45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9" > < / polygon > < / svg > < span class = "external-link-icon-sr-only" > open in new window< / span > < / span > <!-- [ --> <!-- ] --> < / a > < / li > < li class = "navbar-dropdown-item" > < a class = "external-link" href = "https://www.aliyun.com/aliware/txc?spm=arthas.topbar.0.0.0" rel = "noopener noreferrer" target = "_blank" aria-label = "Distributed transaction solutions" > <!-- [ --> <!-- ] --> < span > Distributed transaction solutions< / span > < span > < svg class = "external-link-icon" xmlns = "http://www.w3.org/2000/svg" aria-hidden = "true" focusable = "false" x = "0px" y = "0px" viewbox = "0 0 100 100" width = "15" height = "15" > < path fill = "currentColor" d = "M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z" > < / path > < polygon fill = "currentColor" points = "45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9" > < / polygon > < / svg > < span class = "external-link-icon-sr-only" > open in new window< / span > < / span > <!-- [ --> <!-- ] --> < / a > < / li > < li class = "navbar-dropdown-item" > < a class = "external-link" href = "https://www.aliyun.com/product/ahas?spm=arthas.topbar.0.0.0" rel = "noopener noreferrer" target = "_blank" aria-label = "High-availability solution" > <!-- [ --> <!-- ] --> < span > High-availability solution< / span > < span > < svg class = "external-link-icon" xmlns = "http://www.w3.org/2000/svg" aria-hidden = "true" focusable = "false" x = "0px" y = "0px" viewbox = "0 0 100 100" width = "15" height = "15" > < path fill = "currentColor" d = "M1
name numberOfInstances loadedCountTotal
com.taobao.arthas.agent.ArthasClassloader < span class = "token number" > 1< / span > < span class = "token number" > 2115< / span >
BootstrapClassLoader < span class = "token number" > 1< / span > < span class = "token number" > 1861< / span >
sun.reflect.DelegatingClassLoader < span class = "token number" > 5< / span > < span class = "token number" > 5< / span >
sun.misc.Launcher< span class = "token variable" > $AppClassLoader< / span > < span class = "token number" > 1< / span > < span class = "token number" > 4< / span >
sun.misc.Launcher< span class = "token variable" > $ExtClassLoader< / span > < span class = "token number" > 1< / span > < span class = "token number" > 1< / span >
Affect< span class = "token punctuation" > (< / span > row-cnt:5< span class = "token punctuation" > )< / span > cost < span class = "token keyword" > in< / span > < span class = "token number" > 3< / span > ms.
< / code > < / pre > < div class = "line-numbers" aria-hidden = "true" > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < / div > < / div > < h4 id = "view-statistics-categorized-by-loaded-classes-number" tabindex = "-1" > < a class = "header-anchor" href = "#view-statistics-categorized-by-loaded-classes-number" aria-hidden = "true" > #< / a > View statistics categorized by loaded classes number< / h4 > < div class = "language-bash ext-sh line-numbers-mode" > < pre class = "language-bash" > < code > $ classloader -l
name loadedCount < span class = "token builtin class-name" > hash< / span > parent
BootstrapClassLoader < span class = "token number" > 1861< / span > null null
com.taobao.arthas.agent.ArthasClassloader@68b31f0a < span class = "token number" > 2115< / span > 68b31f0a sun.misc.Launcher< span class = "token variable" > $ExtClassLoader< / span > @66350f69
sun.misc.Launcher< span class = "token variable" > $AppClassLoader< / span > @3d4eac69 < span class = "token number" > 4< / span > 3d4eac69 sun.misc.Launcher< span class = "token variable" > $ExtClassLoader< / span > @66350f69
sun.misc.Launcher< span class = "token variable" > $ExtClassLoader< / span > @66350f69 < span class = "token number" > 1< / span > 66350f69 null
Affect< span class = "token punctuation" > (< / span > row-cnt:4< span class = "token punctuation" > )< / span > cost < span class = "token keyword" > in< / span > < span class = "token number" > 2< / span > ms.
< / code > < / pre > < div class = "line-numbers" aria-hidden = "true" > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < / div > < / div > < h4 id = "view-class-loaders-hierarchy" tabindex = "-1" > < a class = "header-anchor" href = "#view-class-loaders-hierarchy" aria-hidden = "true" > #< / a > View class-loaders hierarchy< / h4 > < div class = "language-bash ext-sh line-numbers-mode" > < pre class = "language-bash" > < code > $ classloader -t
+-BootstrapClassLoader
+-sun.misc.Launcher< span class = "token variable" > $ExtClassLoader< / span > @66350f69
+-com.taobao.arthas.agent.ArthasClassloader@68b31f0a
+-sun.misc.Launcher< span class = "token variable" > $AppClassLoader< / span > @3d4eac69
Affect< span class = "token punctuation" > (< / span > row-cnt:4< span class = "token punctuation" > )< / span > cost < span class = "token keyword" > in< / span > < span class = "token number" > 3< / span > ms.
< / code > < / pre > < div class = "line-numbers" aria-hidden = "true" > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < / div > < / div > < h4 id = "show-the-urls-of-the-urlclassloader" tabindex = "-1" > < a class = "header-anchor" href = "#show-the-urls-of-the-urlclassloader" aria-hidden = "true" > #< / a > Show the URLs of the URLClassLoader< / h4 > < div class = "language-bash ext-sh line-numbers-mode" > < pre class = "language-bash" > < code > $ classloader -c 3d4eac69
file:/private/tmp/math-game.jar
file:/Users/hengyunabc/.arthas/lib/3.0.5/arthas/arthas-agent.jar
Affect< span class = "token punctuation" > (< / span > row-cnt:9< span class = "token punctuation" > )< / span > cost < span class = "token keyword" > in< / span > < span class = "token number" > 3< / span > ms.
< / code > < / pre > < div class = "line-numbers" aria-hidden = "true" > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < / div > < / div > < p > Note that the hashcode changes, you need to check the current ClassLoader information first, and extract the hashcode corresponding to the ClassLoader.< / p > < p > For ClassLoader with only unique instance, it can be specified by class name, which is more convenient to use:< / p > < div class = "language-bash ext-sh line-numbers-mode" > < pre class = "language-bash" > < code > $ classloader --classLoaderClass sun.misc.Launcher< span class = "token variable" > $AppClassLoader< / span >
file:/private/tmp/math-game.jar
file:/Users/hengyunabc/.arthas/lib/3.0.5/arthas/arthas-agent.jar
Affect< span class = "token punctuation" > (< / span > row-cnt:9< span class = "token punctuation" > )< / span > cost < span class = "token keyword" > in< / span > < span class = "token number" > 3< / span > ms.
< / code > < / pre > < div class = "line-numbers" aria-hidden = "true" > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < / div > < / div > < h4 id = "use-the-classloader-to-load-resource" tabindex = "-1" > < a class = "header-anchor" href = "#use-the-classloader-to-load-resource" aria-hidden = "true" > #< / a > Use the classloader to load resource< / h4 > < div class = "language-bash ext-sh line-numbers-mode" > < pre class = "language-bash" > < code > $ classloader -c 3d4eac69 -r META-INF/MANIFEST.MF
jar:file:/System/Library/Java/Extensions/MRJToolkit.jar< span class = "token operator" > !< / span > /META-INF/MANIFEST.MF
jar:file:/private/tmp/math-game.jar< span class = "token operator" > !< / span > /META-INF/MANIFEST.MF
jar:file:/Users/hengyunabc/.arthas/lib/3.0.5/arthas/arthas-agent.jar< span class = "token operator" > !< / span > /META-INF/MANIFEST.MF
< / code > < / pre > < div class = "line-numbers" aria-hidden = "true" > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < / div > < / div > < p > Use the classloader to load < code > .class< / code > resource< / p > < div class = "language-bash ext-sh line-numbers-mode" > < pre class = "language-bash" > < code > $ classloader -c 1b6d3586 -r java/lang/String.class
jar:file:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/rt.jar< span class = "token operator" > !< / span > /java/lang/String.class
< / code > < / pre > < div class = "line-numbers" aria-hidden = "true" > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < / div > < / div > < h4 id = "use-the-classloader-to-load-class" tabindex = "-1" > < a class = "header-anchor" href = "#use-the-classloader-to-load-class" aria-hidden = "true" > #< / a > Use the classloader to load class< / h4 > < div class = "language-bash ext-sh line-numbers-mode" > < pre class = "language-bash" > < code > $ classloader -c 3d4eac69 --load demo.MathGame
load class success.
class-info demo.MathGame
code-source /private/tmp/math-game.jar
name demo.MathGame
isInterface < span class = "token boolean" > false< / span >
isAnnotation < span class = "token boolean" > false< / span >
isEnum < span class = "token boolean" > false< / span >
isAnonymousClass < span class = "token boolean" > false< / span >
isArray < span class = "token boolean" > false< / span >
isLocalClass < span class = "token boolean" > false< / span >
isMemberClass < span class = "token boolean" > false< / span >
isPrimitive < span class = "token boolean" > false< / span >
isSynthetic < span class = "token boolean" > false< / span >
simple-name MathGame
modifier public
annotation
interfaces
super-class +-java.lang.Object
class-loader +-sun.misc.Launcher< span class = "token variable" > $AppClassLoader< / span > @3d4eac69
+-sun.misc.Launcher< span class = "token variable" > $ExtClassLoader< / span > @66350f69
classLoaderHash 3d4eac69
< / code > < / pre > < div class = "line-numbers" aria-hidden = "true" > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < / div > < / div > < h4 id = "statistics-classloader-actually-used-urls-and-unused-urls" tabindex = "-1" > < a class = "header-anchor" href = "#statistics-classloader-actually-used-urls-and-unused-urls" aria-hidden = "true" > #< / a > Statistics ClassLoader actually used URLs and unused URLs< / h4 > < div class = "custom-container warning" > < p class = "custom-container-title" > WARNING< / p > < p > Note that statistics are based on all classes currently loaded by the JVM. Does not mean that < code > Unused URLs< / code > can be removed from the application. Because it may be necessary to load classes from < code > Unused URLs< / code > in the future, or to load < code > resources< / code > .< / p > < / div > < div class = "language-text ext-text line-numbers-mode" > < pre class = "language-text" > < code > $ classloader --url-stat
com.taobao.arthas.agent.ArthasClassloader@3c41660, hash:3c41660
Used URLs:
file:/Users/admin/.arthas/lib/3.5.6/arthas/arthas-core.jar
Unused URLs:
sun.misc.Launcher$AppClassLoader@75b84c92, hash:75b84c92
Used URLs:
file:/Users/admin/code/java/arthas/math-game/target/math-game.jar
file:/Users/admin/.arthas/lib/3.5.6/arthas/arthas-agent.jar
Unused URLs:
sun.misc.Launcher$ExtClassLoader@7f31245a, hash:7f31245a
Used URLs:
file:/tmp/jdk1.8/Contents/Home/jre/lib/ext/sunec.jar
file:/tmp/jdk1.8/Contents/Home/jre/lib/ext/sunjce_provider.jar
file:/tmp/jdk1.8/Contents/Home/jre/lib/ext/localedata.jar
Unused URLs:
file:/tmp/jdk1.8/Contents/Home/jre/lib/ext/nashorn.jar
file:/tmp/jdk1.8/Contents/Home/jre/lib/ext/cldrdata.jar
file:/tmp/jdk1.8/Contents/Home/jre/lib/ext/legacy8ujsse.jar
file:/tmp/jdk1.8/Contents/Home/jre/lib/ext/jfxrt.jar
file:/tmp/jdk1.8/Contents/Home/jre/lib/ext/dnsns.jar
file:/tmp/jdk1.8/Contents/Home/jre/lib/ext/openjsse.jar
file:/tmp/jdk1.8/Contents/Home/jre/lib/ext/sunpkcs11.jar
file:/tmp/jdk1.8/Contents/Home/jre/lib/ext/jaccess.jar
file:/tmp/jdk1.8/Contents/Home/jre/lib/ext/zipfs.jar
< / code > < / pre > < div class = "line-numbers" aria-hidden = "true" > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < / div > < / div > < / div > <!-- [ --> <!-- ] --> < / div > < footer class = "page-meta right-menu-padding" data-v-e0e60120 > < div class = "meta-item edit-link" > < a class = "external-link meta-item-label" href = "https://github.com/alibaba/arthas/edit/master/site/docs/en/doc/classloader.md" rel = "noopener noreferrer" target = "_blank" aria-label = "Edit this page on GitHub" > <!-- [ --> <!-- ] --> < span > Edit this page on GitHub< / span > < span > < svg class = "external-link-icon" xmlns = "http://www.w3.org/2000/svg" aria-hidden = "true" focusable = "false" x = "0px" y = "0px" viewbox = "0 0 100 100" width = "15" height = "15" > < path fill = "currentColor" d = "M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z" > < / path > < polygon fill = "currentColor" points = "45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9" > < / polygon > < / svg > < span class = "external-link-icon-sr-only" > open in new window< / span > < / span > <!-- [ --> <!-- ] --> < / a > < / div > < div class = "meta-item last-updated" > < span class = "meta-item-label" > Last Updated: < / span > <!-- --> < / div > < div class = "meta-item contributors" > < span class = "meta-item-label" > Contributors: < / span > < span class = "meta-item-info" > <!-- [ --> <!-- [ --> < span class = "contributor" title = "email: hengyunabc@gmail.com" > hengyunabc< / span > <!-- [ --> , <!-- ] --> <!-- ] --> <!-- [ --> < span class = "contributor" title = "email: LHearen@126.com" > Hearen< / span > <!-- [ --> , <!-- ] --> <!-- ] --> <!-- [ --> < span class = "contributor" title = "email: hollowman186@vip.qq.com" > Hollow Man< / span > <!-- [ --> , <!-- ] --> <!-- ] --> <!-- [ --> < span class = "contributor" title = "email: 26602940+0xflotus@users.noreply.github.com" > 0xflotus< / span > <!-- [ --> , <!-- ] --> <!-- ] --> <!-- [ --> < span class = "contributor" title = "email: arteevraina@gmail.com" > Arteev Raina< / span > <!-- [ --> , <!-- ] --> <!-- ] --> <!-- [ --> < span class = "contributor" title = "email: ian.luo@gmail.com" > beiwei30< / span > <!-- --> <!-- ] --> <!-- ] --> < / span > < / div > < / footer > <!-- --> <!-- [ --> <!-- ] --> < / main > <!-- ] --> < / div > <!-- --> <!-- ] --> < / div >
< script type = "module" src = "/assets/app.7f0a416a.js" defer > < / script >
< / body >
< / html >
