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< li class = "toctree-l4" > < a class = "reference internal" href = "#decompile-java-lang-string" > Decompile < tt class = "docutils literal" > java.lang.String< / tt > < / a > < / li >
< li class = "toctree-l4" > < a class = "reference internal" href = "#decompile-the-specified-method" > Decompile the specified method< / a > < / li >
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< span id = "jad" > < / span > < h1 > jad< a class = "headerlink" href = "#jad" title = "Permalink to this headline" > ¶< / a > < / h1 >
< blockquote >
< div > Decompile the specified classes.< / div > < / blockquote >
< p > < tt class = "docutils literal" > jad< / tt > helps to decompile the byte code running in JVM to the source code to assist you to understand the logic behind better.< / p >
< ul class = "simple" >
< li > The decompiled code is syntax highlighted for better readability in Arthas console.< / li >
< li > It is possible that there’ < / li >
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< span id = "options" > < / span > < h2 > Options< a class = "headerlink" href = "#options" title = "Permalink to this headline" > ¶< / a > < / h2 >
< table border = "1" class = "docutils" >
< thead >
< tr >
< th align = "right" > Name< / th >
< th align = "left" > Specification< / th >
< / tr >
< / thead >
< tbody >
< tr >
< td align = "right" > < em > class-pattern< / em > < / td >
< td align = "left" > pattern for the class name< / td >
< / tr >
< tr >
< td align = "right" > < code > [c:]< / code > < / td >
< td align = "left" > hashcode of the class loader that loads the class< / td >
< / tr >
< tr >
< td align = "right" > < code > [E]< / code > < / td >
< td align = "left" > turn on regex match while the default is wildcard match< / td >
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< span id = "decompile-java-lang-string" > < / span > < h3 > Decompile < tt class = "docutils literal" > java.lang.String< / tt > < a class = "headerlink" href = "#decompile-java-lang-string" title = "Permalink to this headline" > ¶< / a > < / h3 >
< div class = "highlight-java notranslate" > < div class = "highlight hljs" > < pre class = "java" > $ jad java.lang.String
ClassLoader:
Location:
/*
* Decompiled with CFR 0_132.
*/
package java.lang;
import java.io.ObjectStreamField;
...
public final class String
implements Serializable,
Comparable< String> ,
CharSequence {
private final char[] value;
private int hash;
private static final long serialVersionUID = -6849794470754667710L;
private static final ObjectStreamField[] serialPersistentFields = new ObjectStreamField[0];
public static final Comparator< String> CASE_INSENSITIVE_ORDER = new CaseInsensitiveComparator();
public String(byte[] arrby, int n, int n2) {
String.checkBounds(arrby, n, n2);
this.value = StringCoding.decode(arrby, n, n2);
}
...
< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "decompile-the-specified-method" >
< span id = "decompile-the-specified-method" > < / span > < h3 > Decompile the specified method< a class = "headerlink" href = "#decompile-the-specified-method" title = "Permalink to this headline" > ¶< / a > < / h3 >
< div class = "highlight-java notranslate" > < div class = "highlight hljs" > < pre class = "java" > $ jad demo.MathGame main
ClassLoader:
+-sun.misc.Launcher$AppClassLoader@3d4eac69
+-sun.misc.Launcher$ExtClassLoader@66350f69
Location:
/private/tmp/arthas-demo.jar
public static void main(String[] args) throws InterruptedException {
MathGame game = new MathGame();
do {
game.run();
TimeUnit.SECONDS.sleep(1L);
} while (true);
}
Affect(row-cnt:1) cost in 228 ms.
< / pre > < / div >
< / div >
< / div >
< div class = "section" id = "decompile-with-specified-classloader" >
< span id = "decompile-with-specified-classloader" > < / span > < h3 > Decompile with specified classLoader< a class = "headerlink" href = "#decompile-with-specified-classloader" title = "Permalink to this headline" > ¶< / a > < / h3 >
< blockquote >
< div > If the target class is loaded by multiple classloaders, < tt class = "docutils literal" > jad< / tt > outputs the < tt class = "docutils literal" > hashcode< / tt > of the corresponding classloaders, then you can re-run < tt class = "docutils literal" > jad< / tt > and specify < tt class = "docutils literal" > -c < hashcode > < / tt > to decompile the target class from the specified classloader.< / div > < / blockquote >
< div class = "highlight-java notranslate" > < div class = "highlight hljs" > < pre class = "java" > $ jad org.apache.log4j.Logger
Found more than one class for: org.apache.log4j.Logger, Please use jad -c hashcode org.apache.log4j.Logger
HASHCODE CLASSLOADER
69dcaba4 +-monitor' s ModuleClassLoader
6e51ad67 +-java.net.URLClassLoader@6e51ad67
+-sun.misc.Launcher$AppClassLoader@6951a712
+-sun.misc.Launcher$ExtClassLoader@6fafc4c2
2bdd9114 +-pandora-qos-service' s ModuleClassLoader
4c0df5f8 +-pandora-framework' s ModuleClassLoader
Affect(row-cnt:0) cost in 38 ms.
$ jad org.apache.log4j.Logger -c 69dcaba4
ClassLoader:
+-monitor' s ModuleClassLoader
Location:
/Users/admin/app/log4j-1.2.14.jar
package org.apache.log4j;
import org.apache.log4j.spi.*;
public class Logger extends Category
{
private static final String FQCN;
protected Logger(String name)
{
super(name);
}
...
Affect(row-cnt:1) cost in 190 ms.
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