jdeps(1) | Basic Tools | jdeps(1) |
jdeps - Java class dependency analyzer.
jdeps [options] classes ...
The jdeps command shows the package-level or class-level dependencies of Java class files. The input class can be a path name to a .class file, a directory, a JAR file, or it can be a fully qualified class name to analyze all class files. The options determine the output. By default, jdeps outputs the dependencies to the system output. It can generate the dependencies in DOT language (see the -dotoutput option).
See also Setting the Class Path.
Warning: JDK internal APIs may not be accessible in upcoming releases.
Analyzing the dependencies of Notepad.jar.
$ jdeps demo/jfc/Notepad/Notepad.jar
demo/jfc/Notepad/Notepad.jar -> /usr/java/jre/lib/rt.jar
<unnamed> (Notepad.jar)
-> java.awt
-> java.awt.event
-> java.beans
-> java.io
-> java.lang
-> java.net
-> java.util
-> java.util.logging
-> javax.swing
-> javax.swing.border
-> javax.swing.event
-> javax.swing.text
-> javax.swing.tree
-> javax.swing.undo
Use -P or -profile option to show on which profile that Notepad depends.
$ jdeps -profile demo/jfc/Notepad/Notepad.jar
demo/jfc/Notepad/Notepad.jar -> /usr/java/jre/lib/rt.jar (Full JRE)
<unnamed> (Notepad.jar)
-> java.awt Full JRE
-> java.awt.event Full JRE
-> java.beans Full JRE
-> java.io compact1
-> java.lang compact1
-> java.net compact1
-> java.util compact1
-> java.util.logging compact1
-> javax.swing Full JRE
-> javax.swing.border Full JRE
-> javax.swing.event Full JRE
-> javax.swing.text Full JRE
-> javax.swing.tree Full JRE
-> javax.swing.undo Full JRE
Analyzing the immediate dependencies of a specific class in a given classpath, for example the com.sun.tools.jdeps.Main class in the tools.jar file.
$ jdeps -cp lib/tools.jar com.sun.tools.jdeps.Main
lib/tools.jar -> /usr/java/jre/lib/rt.jar
com.sun.tools.jdeps (tools.jar)
-> java.io
-> java.lang
Use the -verbose:class option to find class-level dependencies or use the -v or -verbose option to include dependencies from the same JAR file.
$ jdeps -verbose:class -cp lib/tools.jar com.sun.tools.jdeps.Main
lib/tools.jar -> /usr/java/jre/lib/rt.jar
com.sun.tools.jdeps.Main (tools.jar)
-> java.io.PrintWriter
-> java.lang.Exception
-> java.lang.Object
-> java.lang.String
-> java.lang.System
Use the -R or -recursive option to analyze the transitive dependencies of the com.sun.tools.jdeps.Main class.
$ jdeps -R -cp lib/tools.jar com.sun.tools.jdeps.Main
lib/tools.jar -> /usr/java/jre/lib/rt.jar
com.sun.tools.classfile (tools.jar)
-> java.io
-> java.lang
-> java.lang.reflect
-> java.nio.charset
-> java.nio.file
-> java.util
-> java.util.regex
com.sun.tools.jdeps (tools.jar)
-> java.io
-> java.lang
-> java.nio.file
-> java.nio.file.attribute
-> java.text
-> java.util
-> java.util.jar
-> java.util.regex
-> java.util.zip
/usr/java/jre/lib/jce.jar -> /usr/java/jre/lib/rt.jar
javax.crypto (jce.jar)
-> java.io
-> java.lang
-> java.lang.reflect
-> java.net
-> java.nio
-> java.security
-> java.security.cert
-> java.security.spec
-> java.util
-> java.util.concurrent
-> java.util.jar
-> java.util.regex
-> java.util.zip
-> javax.security.auth
-> sun.security.jca JDK internal API (rt.jar)
-> sun.security.util JDK internal API (rt.jar)
javax.crypto.spec (jce.jar)
-> java.lang
-> java.security.spec
-> java.util
/usr/java/jre/lib/rt.jar -> /usr/java/jre/lib/jce.jar
java.security (rt.jar)
-> javax.crypto
Generate dot files of the dependencies of Notepad demo.
$ jdeps -dotoutput dot demo/jfc/Notepad/Notepad.jar
jdeps will create one dot file for each given JAR file named <filename>.dot in the dot directory specified in the -dotoutput option, and also a summary file named summary.dot that will list the dependencies among the JAR files
$ cat dot/Notepad.jar.dot
digraph "Notepad.jar" {
// Path: demo/jfc/Notepad/Notepad.jar
"<unnamed>" -> "java.awt";
"<unnamed>" -> "java.awt.event";
"<unnamed>" -> "java.beans";
"<unnamed>" -> "java.io";
"<unnamed>" -> "java.lang";
"<unnamed>" -> "java.net";
"<unnamed>" -> "java.util";
"<unnamed>" -> "java.util.logging";
"<unnamed>" -> "javax.swing";
"<unnamed>" -> "javax.swing.border";
"<unnamed>" -> "javax.swing.event";
"<unnamed>" -> "javax.swing.text";
"<unnamed>" -> "javax.swing.tree";
"<unnamed>" -> "javax.swing.undo";
}
$ cat dot/summary.dot
digraph "summary" {
"Notepad.jar" -> "rt.jar";
}
21 November 2013 | JDK 8 |