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JAPIT

Overview

JavaAPITools - set of utilities to list, compare public APIs and other details for available classes and jar files

  • org.jboss.japit.ListAPIMain -- list public methods, fields, class details for specified jar files
  • org.jboss.japit.CompareAPIMain -- compare two jar files on public methods, fields and class details

Output:

  • console
  • TXT file
  • HTML files

Building

Ensure you have Maven installed. The maven-shade-plugin packages all dependencies in the final jar (Überjar).

mvn clean package

Executing Maven Way

mvn exec:java -Dexec.mainClass="org.jboss.japit.ListAPIMain" -Dexec.args="arg0 arg1 arg2"

Executing Command Line Way

java -jar japit.jar -cmd (--command) [COMPARE | LIST] [command arguments]

Real life example

# Compare two versions of an awesome library, but skip:
# - classes from internal packages (includes ".internal." in name)
# - and anonymous classes (e.g. org.awesome.Type$1)
java -jar japit.jar -cmd COMPARE -r .*\\.internal\\..* -r .*\\\$[0-9]+ -h /tmp/japit-html awesome-1.0.{0,1}.jar

LIST command syntax (java org.jboss.japit.ListAPIMain)

 -c (--class) FQCN             : List API only for specified class
 -d (--disable-console-output) : Disable text output to the console
 -h (--html-output) DIR        : Enable HTML output and set output directory
 -r (--skip-regex) REGEX        : Don't list API for class names matching given
                                  regular expression
 -t (--txt-output) DIR         : Enable TXT output and set output directory

  Example: java org.jboss.japit.ListAPIMain -c (--class) FQCN -d (--disable-console-output) -h 
  (--html-output) DIR -t (--txt-output) DIR  JarFile1 [JarFile2 ...]

COMPARE command syntax (java org.jboss.japit.CompareAPIMain)

 -c (--class) FQCN              : List API only for specified class
 -d (--disable-console-output)  : Disable text output to the console
 -e (--enable-declared-items)   : Enable declared methods and fiels in comparison
 -h (--html-output) DIR         : Enable HTML output and set output directory
 -i (--ignore-class-version)    : Ignore class version in comparison
 -r (--skip-regex) REGEX        : Don't list API for class names matching given
                                  regular expression
 -s (--suppress-archive-report) : Suppress archive reports in output
 -t (--txt-output) DIR          : Enable TXT output and set output directory

  Example: java org.jboss.japit.CompareAPIMain -c (--class) FQCN -d (--disable-console-output) 
  -e (--enable-declared-items) -h (--html-output) DIR -i (--ignore-class-version) -s (--suppress-archive-report)
  -t (--txt-output) DIR  FirstPairFirstJar FirstPairSecondJar [SecondPairFirstJar SecondPairSecondJar ...]

License