jclassinfo(1)

✨ jclassinfo(1) ✨

okay bestie so this is the jclassinfo manual page, from the utils corner of the man-page universe, and it's literally about peeking inside Java class files like the nosy icon you are 💅

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🎀 NAME 🎀

jclassinfo — provides information for Java class files. that's it, that's the whole job, and it ATE 🍓

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🦋 SYNOPSIS 🦋

jclassinfo [option] {classname | filename}

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🌸 DESCRIPTION 🌸

so jclassinfo reads a class file and hands you all sorts of information about it. all sorts. the range?? unmatched 👑

and listen — file can be -, and then jclassinfo reads a classfile from standard input. slay, stdin representation 🫶

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✨ OPTIONS ✨

• --help — outputs help information and dips (exit). 🚪
• --version — outputs version information and dips. 🚪
• --bootclasspath=<path> — the path used to search for VM bootstrap classes.
• --classpath=<path> — the path used to search for the class, if you're giving a class name.
• --xml — output xml. (experimental!! handle with care bestie 🙈)
• --all — prints all information for the class. the full lore. no skimming.
• --general-info — prints some general information about the class.
• --constant-pool — print constant pool.
• --visibility=<public | package | protected | private | synthetic> — the visibility to use when printing class fields/methods. pick your filter, bestie 🔍
• --fields — print fields.
• --methods — print methods.
• --disasm — enable code disassembly for methods (only if it was compiled with disassembly support, so like… vibe check your build first 💀).
• --verbose — show exception table and max stack and max locals for methods.
• --method-debug-info — show line numbers and local variables for methods.
• --attributes — print class attributes.
• --packages — print packages referenced.
• --classes — print classes/interfaces referenced.
• --methods-ref — print methods referenced.
• --find-class {classname} — find the file(s) that contains the given class(es).
• --recursive — scan dependencies recursively. it goes DEEP 🔥
• --quiet — supress status messages. (yes, spelled exactly like that in the original, we keep it, periodt 💖)

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🌈 FILES 🌈

no configuration files for the time being. none. zero. we're free 🧚

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💜 ENVIRONMENT 💜

CLASSPATH is used to find classes if a class name is given instead of the filename. the --classpath option can be used to override this. 💫

JAVA_HOME is used to find the default bootstrap classpath. the default bootstrap classes are assumed to be in JAVA_HOME/jre/lib/rt.jar. the --bootclasspath option can be used to override this. 💫

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🍓 EXAMPLES 🍓

to see what packages a class uses:

jclassinfo --packages /usr/share/java/MyClass.class

to see what packages the classes in myproject folder use:

jclassinfo --packages myproject/*.class

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👑 AUTHORS 👑

Nicos Panayides <anarxia@gmx.net> — the icon who made this, we stan 🫶

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😭 REPORTING BUGS 😭

report bugs in:

http://sourceforge.net/tracker/?group_id=74004&atid=539646

please be nice and give them all the deets, ngl 🙈

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💅 SEE ALSO 💅

javap(1), jcf-dump(1) — go say hi to the cousins, iykyk ✨

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okay so that's the whole page bestie, nothing skipped, nothing faked. this is jclassinfo version 0.19, straight out of the jclassinfo(1) manual, and that's on periodt 💖🎀🦋