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25<h2>Downloads</h2>
26
27<b>ProGuard</b> is distributed under the terms of the GNU General Public
28License. Please consult the <a href="license.html">license page</a> for more
29details.
30<p>
31<b>ProGuard</b> is written in Java, so it requires a Java Runtime Environment
32   (JRE 1.5 or higher).
33<p>
34You can download the latest release (containing the program jars, the
35documentation that you're reading now, examples, and the source code) from this
36location:
37<p>
38<center><a href="http://sourceforge.net/projects/proguard/files/"
39target="other">Download section at SourceForge</a></center>
40<p>
41
42The <a href="http://sourceforge.net/projects/proguard/files/proguard/"
43target="other">proguard</a> section contains major releases and updates with
44sub-minor version numbers, for applying emergency fixes. The
45<a href="http://sourceforge.net/projects/proguard/files/proguard%20beta/"
46target="other">proguard beta</a> section contains beta releases. These include
47new features and any less urgent bug fixes collected since the previous
48release.
49<p>
50If you're still working with an older version of <b>ProGuard</b>, check out
51the summary of changes below, to see if you're missing something essential.
52Better look at the up-to-date <a
53href="http://proguard.sourceforge.net/downloads.html">on-line version</a> if
54you're reading a local copy of this page. Unless noted otherwise,
55<b>ProGuard</b> remains compatible across versions, so don't be afraid to
56update.
57<p>
58If you're only interested in individual jar files for your build process, you
59can also download them from the Maven Central repository, with GroupId
60<a href="http://search.maven.org/#search|ga|1|g:%22net.sf.proguard%22"
61target="other">net.sf.proguard</a> and ArtifactIds
62<a href="http://search.maven.org/#search|ga|1|a:%22proguard-parent%22"
63target="other">proguard-parent</a>,
64<a href="http://search.maven.org/#search|ga|1|a:%22proguard-base%22"
65target="other">proguard-base</a>,
66<a href="http://search.maven.org/#search|ga|1|a:%22proguard-gui%22"
67target="other">proguard-gui</a>,
68<a href="http://search.maven.org/#search|ga|1|a:%22proguard-anttask%22"
69target="other">proguard-anttask</a>,
70<a href="http://search.maven.org/#search|ga|1|a:%22proguard-gradle%22"
71target="other">proguard-gradle</a>,
72<a href="http://search.maven.org/#search|ga|1|a:%22proguard-wtk-plugin%22"
73target="other">proguard-wtk-plugin</a>, and
74<a href="http://search.maven.org/#search|ga|1|a:%22proguard-retrace%22"
75target="other">proguard-retrace</a>.
76
77<h3><div>Oct 2014</div> Version 5.1</h3>
78<ul>
79<li>Fixed processing of various kinds of closures in Java 8.
80<li>Fixed shrinking of generic signatures in classes and methods.
81<li>Fixed shrinking of debug information about generic local variable types.
82<li>Fixed optimization of default implementations in interfaces.
83<li>Fixed optimization of variable initializations.
84<li>Fixed obfuscation of internal class names in strings.
85<li>Updated documentation and examples.
86</ul>
87
88<h3><div>Aug 2014</div> Version 5.0</h3>
89<ul>
90<li>Added support for Java 8.
91<li>Added <code>-keep</code> modifier <code>includedescriptorclasses</code>.
92<li>Added automatic suggestions for keeping attributes.
93<li>Clearing preverification information when <code>-dontpreverify</code> is
94    specified.
95<li>Extended optimization support for conservative optimization with java
96    system property <code>optimize.conservatively</code>.
97<li>Fixed occasional preverification problem.
98<li>Fixed shrinking of generic class signatures.
99<li>Fixed shrinking of generic variable signatures.
100<li>Fixed analysis of unused parameters for bootstrap methods in library
101    classes.
102<li>Fixed inlining problem of non-returning subroutines.
103<li>Fixed possible IllegalArgumentException and ArrayIndexOutOfBoundsException
104    in enum simplification.
105<li>Fixed unnecessary notes about dynamic class instantiations with constant
106    class names.
107<li>Fixed preverification of unnecessary casts of null values.
108<li>Fixed lazy resolution of output jars in Gradle task.
109<li>Fixed processing of synthetic code with alternative initializer invocations.
110<li>Improved handling of symbolic links in shell scripts.
111<li>Improved default path in Windows bat files.
112<li>Updated documentation and examples.
113</ul>
114
115<h3><div>Dec 2013</div> Version 4.11</h3>
116<ul>
117<li>Added simplification of basic enum types.
118<li>Added reading and writing of apk and aar archives.
119<li>Fixed criteria for class merging.
120<li>Fixed simplification of variable initializations.
121<li>Fixed simplification of redundant boolean variables.
122<li>Fixed optimization of unused stack entries in exception handlers.
123<li>Fixed correction of access flags after class merging, method inlining, and
124    class repackaging.
125<li>Refined criterion for method inlining.
126<li>Updated documentation and examples.
127</ul>
128
129<h3><div>Jul 2013</div> Version 4.10</h3>
130<ul>
131<li>Made Gradle task resolve files lazily.
132<li>Enabled as-needed execution in Gradle task.
133<li>Using standard string interpolation for Gradle configuration.
134<li>Reduced log levels for console output in Gradle task.
135<li>Updated documentation and examples.
136</ul>
137
138<h3><div>Mar 2013</div> Version 4.9</h3>
139<ul>
140<li>Added Gradle task.
141<li>Added more peephole optimizations for strings.
142<li>Improved optimization of classes with static initializers.
143<li>Improved processing of finally blocks compiled with JDK 1.4 or older.
144<li>Fixed shrinking of access widening abstract methods, for the Dalvik VM.
145<li>Fixed overly aggressive shrinking of class annotations.
146<li>Fixed processing of unused classes in generic signatures.
147<li>Fixed merging of classes with similar class members.
148<li>Added java system property <code>optimize.conservatively</code> to allow
149    for instructions intentionally throwing <code>NullPointerException</code>,
150    <code>ArrayIndexOutOfBoundsException</code>, or
151    <code>ClassCastException</code> without other useful effects.
152<li>Fixed optimization of unnecessary variable initializations.
153<li>Fixed optimization of code involving NaN.
154<li>Fixed inlining of methods that are supposed to be kept.
155<li>Fixed preverification of artificially convoluted dup constructs.
156<li>Fixed quotes for java commands in .bat scripts.
157<li>Improved handling of non-sequential line number information.
158<li>Now requiring Java 5 or higher for running ProGuard.
159<li>Updated build files.
160<li>Updated documentation and examples.
161</ul>
162
163<h3><div>May 2012</div> Version 4.8</h3>
164<ul>
165<li>Added more peephole optimizations for strings.
166<li>Added support for multiple external configuration files in Ant
167    configurations.
168<li>Added support for Ant properties in external configuration files.
169<li>Fixed parsing of empty file filters on input and output.
170<li>Fixed parsing of '*' wildcard for file filters and name filters.
171<li>Fixed obfuscation of private methods that are overridden in concrete
172    classes with intermediary abstract classes and interfaces (workaround
173    for Oracle bugs #6691741 and #6684387).
174<li>Fixed optimization of complex finally blocks, compiled with JDK 1.4 or
175    earlier.
176<li>Fixed optimizing signatures of methods that are marked as not having
177    side effects.
178<li>Fixed optimization of long local variables possibly causing verification
179    error for register pairs.
180<li>Fixed merging of classes defined inside methods.
181<li>Fixed stack consistency in optimization step.
182<li>No longer removing debug information about unused parameters, for
183    <code>-keepparameternames</code> or <code>-keepattributes</code>.
184<li>Fixed updating manifest files with carriage return characters.
185<li>Now removing unreachable code in preverification step.
186<li>Improved default regular expression for stack traces in ReTrace.
187<li>Updated documentation and examples.
188</ul>
189
190<h3><div>Dec 2011</div> Version 4.7</h3>
191<ul>
192<li>Added support for Java 7.
193<li>Parsing unquoted file names with special characters more leniently.
194<li>Added support for instance methods overriding class methods.
195<li>Added removal of unused parameterless constructors.
196<li>Added removal of empty class initializers.
197<li>Added peephole optimizations for constant strings.
198<li>Avoiding idle optimization passes.
199<li>Improved removal of unused constants after obfuscation.
200<li>Fixed removal of unused classes referenced by annotations.
201<li>Fixed simplifying parameters of constructors that should actually be
202    preserved.
203<li>Fixed simplifying parameters of large numbers of similar constructors.
204<li>Fixed exceptions in optimization of unusual obfuscated code.
205<li>Fixed NullPointerException when specifying <code>-keepclassmembers</code>
206    without specific class or class members.
207<li>Fixed potential problems with mixed-case class name dictionaries when not
208    allowing mixed-case class names.
209<li>Fixed obfuscation of classes with EnclosingMethod attributes that don't
210    specify methods.
211<li>Fixed preverification of returning try blocks with finally blocks, inside
212    try blocks, when compiled with JDK 1.4.
213<li>Fixed sorting of interfaces containing generics.
214<li>Fixed paths in shell scripts.
215<li>Fixed filling in of text fields showing class obfuscation dictionary and
216    package obfuscation dictionary from configuration in GUI.
217<li>Worked around Oracle Java 6/7 bug #7027598 that locked the GUI on Linux.
218<li>Updated documentation and examples.
219</ul>
220
221<h3><div>Feb 2011</div> Version 4.6</h3>
222<ul>
223<li>Added support for synthetic, bridge, and varargs modifiers in configuration.
224<li>Added detection of atomic updater construction with constant arguments.
225<li>Fixed merging of package visible classes.
226<li>Fixed optimization of fields that are only accessed by reflection.
227<li>Fixed optimization of read-only or write-only fields that are volatile.
228<li>Fixed handling of side-effects due to static initializers.
229<li>Fixed handling of bridge flags in obfuscation step.
230<li>Fixed handling of super flag when merging classes.
231<li>Fixed updating of variable tables when optimizing variables.
232<li>Fixed removal of unused parameters with 32 or more parameters.
233<li>Fixed incorrect removal of exception handler for instanceof instruction.
234<li>Fixed inlining of methods with unusual exception handlers.
235<li>Fixed optimization of unusual code causing stack underflow.
236<li>Fixed keeping of constructor parameter names.
237<li>Fixed unwanted wrapping of non-standard META-INF files.
238<li>Fixed filtering of warnings about references to array types.
239<li>Fixed overriding of warning option and note option in Ant task.
240<li>Improved detection of file name extensions for canonical paths.
241<li>Improved printing of seeds specified by <code>-keep</code> options.
242<li>Improved printing of notes about unkept classes.
243<li>Improved checking whether output is up to date.
244<li>Updated documentation and examples.
245</ul>
246
247<h3><div>Jun 2010</div> Version 4.5</h3>
248<ul>
249<li>Added option <code>-keepparameternames</code>.
250<li><code>-dontskipnonpubliclibraryclasses</code> is now set by default. Added
251    <code>-skipnonpubliclibraryclasses</code> as an option.
252<li>Made processing independent of order of input classes to get even more
253    deterministic output.
254<li>Improved constant field propagation.
255<li>Improved renaming of resource files in subdirectories of packages.
256<li>Avoiding making fields in interfaces private.
257<li>Optimizing exception handlers for monitorexit instruction.
258<li>Reduced maximum allowed code length after inlining from 8000 bytes to
259    7000 bytes.
260<li>Fixed missing warnings about missing library classes.
261<li>Fixed shrinking of annotations with arrays of length 0.
262<li>Fixed handling of -0.0 and NaN values when simplifying expressions.
263<li>Fixed copying of exception handlers when simplifying tail recursion calls.
264<li>Fixed optimization of introspected fields.
265<li>Fixed simplification of unnecessary variable initializations.
266<li>Fixed evaluation of subroutines in pre-JDK 1.5 code.
267<li>Fixed updating of access flags in inner classes information.
268<li>Fixed disabling of field privatization.
269<li>Fixed invocations of privatized methods.
270<li>Fixed updating of local variable debug information in optimization step.
271<li>Fixed print settings without file name in GUI.
272<li>Fixed field privatization setting in GUI.
273<li>Fixed saving incorrectly quoted arguments in GUI.
274<li>Fixed handling of regular expressions with only negators.
275<li>Fixed unwanted wrapping of non-standard META-INF files.
276<li>Fixed regular expression pattern for constructors in ReTrace.
277<li>Updated documentation and examples.
278</ul>
279
280<h3><div>Jul 2009</div> Version 4.4</h3>
281<ul>
282<li>Added new peephole optimizations.
283<li>Added option <code>-optimizations</code> for fine-grained configuration of
284    optimizations.
285<li>Added option <code>-adaptclassstrings</code> for adapting string constants
286    that correspond to obfuscated classes.
287<li>Added option <code>-keeppackagenames</code> for keeping specified package
288    names from being obfuscated.
289<li>Added option <code>-keepdirectories</code> for keeping specified directory
290    entries in output jars.
291<li>Extended options <code>-dontnote</code> and <code>-dontwarn</code> for
292    fine-grained configuration of notes and warnings.
293<li>Added option <code>-regex</code> in ReTrace, for specifying alternative
294    regular expressions to parse stack traces.
295<li>Extended renaming of resource files based on obfuscation.
296<li>Improved inlining of constant parameters and removal of unused parameters.
297<li>Avoiding bug in IBM's JVM for JSE, in optimization step.
298<li>Avoiding ArrayIndexOutOfBoundsException in optimization step.
299<li>Fixed configuration with annotations that are not preserved themselves.
300<li>Fixed preverification of invocations of super constructors with arguments
301    containing ternary operators.
302<li>Fixed processing of unreachable exception handlers.
303<li>Fixed merging of exception classes.
304<li>Fixed repeated method inlining.
305<li>Fixed inlining of finally blocks surrounded by large try blocks, compiled
306    with JDK 1.4 or earlier.
307<li>Fixed optimization of complex finally blocks, compiled with JDK 1.4 or
308    earlier.
309<li>Fixed obfuscation of anonymous class names, if <code>EnclosingMethod</code>
310    attributes are being kept.
311<li>Fixed obfuscation of inner class names in generic types.
312<li>Fixed decoding of UTF-8 strings containing special characters.
313<li>Fixed copying of debug information and annotations when merging classes.
314<li>Fixed writing out of unknown attributes.
315<li>Fixed updating manifest files with split lines.
316<li>Updated documentation and examples.
317</ul>
318
319<h3><div>Dec 2008</div> Version 4.3</h3>
320<ul>
321<li>Added class merging.
322<li>Added static single assignment analysis.
323<li>Added support for annotation and enumeration class types in configuration.
324<li>Refined shrinking of fields in case of unusual
325    <code>-keepclassmembers</code> options.
326<li>Added simplification of tail recursion calls.
327<li>Added new peephole optimizations.
328<li>Fixed optimization of unused variable initializations causing negative
329    stack sizes.
330<li>Fixed optimization of unusual initialization code causing
331    NullPointerExceptions.
332<li>Fixed optimization of half-used long and double parameters.
333<li>Fixed processing of complex generics signatures.
334<li>Working around suspected java compiler bug with parameter annotations on
335    constructors of non-static inner classes.
336<li>Fixed obfuscation of classes with inner classes whose names are preserved.
337<li>Fixed access of protected methods in repackaged classes.
338<li>Added options <code>-classobfuscationdictionary</code> and
339    <code>-packageobfuscationdictionary</code>.
340<li>Adapting more types of resource file names based on obfuscation.
341<li>Extended warnings about incorrect dependencies.
342<li>Added start-up scripts and build scripts.
343<li>Updated documentation and examples.
344</ul>
345
346<h3><div>Mar 2008</div> Version 4.2</h3>
347<ul>
348<li>Refined data flow analysis in optimization step.
349<li>Fixed handling of exceptions when inlining subroutines.
350<li>Fixed inlining of incompatible code constructs between different java
351    versions.
352<li>Fixed computation of local variable frame size.
353<li>Fixed optimization of infinite loops.
354<li>Fixed optimization of subroutine invocations.
355<li>Fixed optimization of floating point remainder computations.
356<li>Fixed removal of unused parameters in method descriptors containing arrays
357    of longs or doubles.
358<li>Added undocumented java system properties
359    <code>maximum.inlined.code.length</code> (default is 8) and
360    <code>maximum.resulting.code.length</code> (defaults are 8000 for JSE and
361    2000 for JME), for expert users who read release notes.
362<li>Fixed processing of generic types in Signature attributes in shrinking and
363    optimization steps.
364<li>Fixed processing of inner class names in Signature attributes in obfuscation
365    step.
366<li>Improved adapting resource file names following obfuscated class names.
367<li>Fixed interpretation of package names in GUI.
368<li>Fixed default settings for Xlets in GUI.
369<li>Updated documentation and examples.
370</ul>
371
372<h3><div>Dec 2007</div> Version 4.1</h3>
373<ul>
374<li>Fixed shrinking of default annotation element values.
375<li>Fixed optimization of invocations of methods in same class that are
376    accessed through extensions.
377<li>Fixed optimization of invocations of synchronized methods without other
378    side-effects.
379<li>Fixed optimization of some non-returning subroutines.
380<li>Fixed handling of local variable debug information when inlining methods.
381<li>Avoiding StackOverflowErrors during optimization of complex methods.
382<li>Fixed obfuscation of potentially ambiguous non-primitive constants in
383    interfaces.
384<li>Fixed preverification of some code constructs involving String, Class, and
385    exception types.
386<li>The Ant task now allows empty <code>&lt;injars&gt;</code> and
387    <code>&lt;libraryjars&gt;</code> elements.
388<li>Updated documentation and examples.
389</ul>
390
391<h3><div>Sep 2007</div> Version 4.0</h3>
392<ul>
393<li>Added preverifier for Java 6 and Java Micro Edition, with new options
394    <code>-microedition</code> and <code>-dontpreverify</code>.
395<li>Added new option <code>-target</code> to modify java version of processed
396    class files.
397<li>Made <code>-keep</code> options more orthogonal and flexible, with option
398    modifiers <code>allowshrinking</code>, <code>allowoptimization</code>, and
399    <code>allowobfuscation</code>.
400<li>Added new wildcards for class member descriptors: "<code>***</code>",
401    matching any type, and "<code>...</code>", matching any number of
402    arguments.
403<li>Added support for configuration by means of annotations.
404<li>Improved shrinking of unused annotations.
405<li>Added check on modification times of input and output, to avoid unnecessary
406    processing, with new option <code>-forceprocessing</code>.
407<li>Added new options <code>-flattenpackagehierarchy</code> and
408    <code>-repackageclasses</code> (replacing <code>-defaultpackage</code>) to
409    control obfuscation of package names.
410<li>Added new options <code>-adaptresourcefilenames</code> and
411    <code>-adaptresourcefilecontents</code>, with file filters, to update
412    resource files corresponding to obfuscated class names.
413<li>Added detection of dynamically accessed fields and methods.
414<li>Now treating <code>Exceptions</code> attributes as optional.
415<li>Now respecting naming rule for nested class names
416    (<code>EnclosingClass$InnerClass</code>) in obfuscation step, if
417    <code>InnerClasses</code> attributes or <code>EnclosingMethod</code>
418    attributes are being kept.
419<li>Added new inter-procedural optimizations: method inlining and propagation
420    of constant fields, constant arguments, and constant return values.
421<li>Added optimized local variable allocation.
422<li>Added more than 250 new peephole optimizations.
423<li>Improved making classes and class members public or protected.
424<li>Now printing notes on suspiciously unkept classes in parameters of
425    specified methods.
426<li>Now printing notes for class names that don't seem to be fully qualified.
427<li>Added support for uppercase filename extensions.
428<li>Added tool tips to the GUI.
429<li>Rewritten class file I/O code.
430<li>Updated documentation and examples.
431</ul>
432Upgrade considerations:
433<ul>
434
435<li>Since ProGuard now treats the <code>Exceptions</code> attribute as
436    optional, you may have to specify <code>-keepattributes Exceptions</code>,
437    notably when processing code that is to be used as a library.
438
439<li>ProGuard now preverifies code for Java Micro Edition, if you specify the
440    option <code>-microedition</code>. You then no longer need to process the
441    code with an external preverifier.
442
443<li>You should preferably specify <code>-repackageclasses</code> instead of the
444    old option name <code>-defaultpackage</code>.
445</ul>
446
447<h3><div>Dec 2007</div> Version 3.11</h3>
448<ul>
449<li>Fixed optimization of invocations of methods in same class that are
450    accessed through extensions.
451<li>Fixed optimization of invocations of synchronized methods without other
452    side-effects.
453<li>Updated documentation and examples.
454</ul>
455
456<h3><div>Aug 2007</div> Version 3.10</h3>
457<ul>
458<li>Now handling mixed-case input class names when
459    <code>-dontusemixedcaseclassnames</code> is specified.
460<li>Fixed optimization of synchronization on classes, as compiled by Eclipse
461    and Jikes.
462<li>Fixed optimization of switch statements with unreachable cases.
463<li>Avoiding merging subsequent identically named files.
464<li>Updated documentation and examples.
465</ul>
466
467<h3><div>Jun 2007</div> Version 3.9</h3>
468<ul>
469<li>Fixed processing of .class constructs in Java 6.
470<li>Fixed repeated processing of .class constructs.
471<li>Fixed possible division by 0 in optimization step.
472<li>Fixed handling of variable instructions with variable indices larger than
473    255.
474<li>Updated documentation and examples.
475</ul>
476
477<h3><div>Mar 2007</div> Version 3.8</h3>
478<ul>
479<li>Fixed optimization of parameters used as local variables.
480<li>Fixed obfuscation with conflicting class member names.
481<li>Fixed incremental obfuscation with incomplete mapping file for library jars.
482<li>Updated documentation and examples.
483</ul>
484
485<h3><div>Dec 2006</div> Version 3.7</h3>
486<ul>
487<li>Now accepting Java 6 class files.
488<li>Fixed shrinking of partially used annotations.
489<li>Improved incremental obfuscation, with new option
490    <code>-useuniqueclassmembernames</code>.
491<li>Printing more information in case of conflicting configuration and input.
492<li>Fixed optimization of repeated array length instruction.
493<li>Fixed optimization of subsequent try/catch/finally blocks with return
494    statements.
495<li>Fixed optimization of complex stack operations.
496<li>Fixed optimization of simple infinite loops.
497<li>Fixed optimization of expressions with constant doubles.
498<li>Tuned optimization to improve size reduction after preverification.
499<li>Fixed overflows of offsets in long code blocks.
500<li>Now allowing class names containing dashes.
501<li>Updated documentation and examples.
502</ul>
503
504<h3><div>May 2006</div> Version 3.6</h3>
505<ul>
506<li>No longer automatically keeping classes in parameters of specified methods
507    from obfuscation and optimization (introduced in version 3.4).
508<li>Fixed inlining of interfaces that are used in .class constructs.
509<li>Fixed removal of busy-waiting loops reading volatile fields.
510<li>Fixed optimization of comparisons of known integers.
511<li>Fixed optimization of known branches.
512<li>Fixed optimization of method calls on arrays of interfaces.
513<li>Fixed optimization of method calls without side-effects.
514<li>Fixed optimization of nested try/catch/finally blocks with return
515    statements.
516<li>Fixed initialization of library classes that only appear in descriptors.
517<li>Fixed matching of primitive type wildcards in configuration.
518<li>Fixed the boilerplate specification for enumerations in the GUI.
519<li>Updated documentation and examples.
520</ul>
521
522<h3><div>Jan 2006</div> Version 3.5</h3>
523<ul>
524<li>Fixed obfuscation of class members with complex visibility.
525<li>Fixed optimization bugs causing stack verification errors.
526<li>Fixed optimization bug causing overridden methods to be finalized.
527<li>Fixed optimization bug causing abstract method errors for retro-fitted
528    library methods.
529<li>Fixed optimization bug evaluating code with constant long values.
530<li>Fixed bug in updating of optional local variable table attributes and local
531    variable type table attributes after optimization.
532<li>Fixed interpretation of comma-separated class names without wildcards.
533<li>Updated documentation and examples.
534</ul>
535
536<h3><div>Oct 2005</div> Version 3.4</h3>
537<ul>
538<li>Extended optimizations: removing duplicate code within methods.
539<li>Extended regular expressions for class names to comma-separated lists.
540<li>Now automatically keeping classes in descriptors of kept class members.
541<li>Added verbose statistics for optimizations.
542<li>Added boilerplate Number optimizations in GUI.
543<li>Fixed <code>Class.forName</code> detection.
544<li>Fixed incremental obfuscation bug.
545<li>Fixed optimization bug causing stack verification errors.
546<li>Fixed optimization bugs related to removal of unused parameters.
547<li>Fixed exception when optimizing code with many local variables.
548<li>Fixed exception when saving configuration with initializers in GUI.
549<li>Updated documentation and examples.
550</ul>
551
552<h3><div>Jun 2005</div> Version 3.3</h3>
553<ul>
554<li>Extended optimizations: making methods private and static when possible,
555    making classes static when possible, removing unused parameters.
556<li>Made file names relative to the configuration files in which they are
557    specified. Added <code>-basedirectory</code> option.
558<li>Added <code>-whyareyoukeeping</code> option to get details on why given
559    classes and class members are being kept.
560<li>Added warnings for misplaced class files.
561<li>Improved printing of notes for <code>Class.forName</code> constructs.
562<li>Implemented '<code>assumenosideeffects</code>' nested element in Ant task.
563<li>Improved processing of annotations.
564<li>Fixed reading and writing of parameter annotations.
565<li>Fixed various optimization bugs.
566<li>Fixed wildcards not matching '-' character.
567<li>Fixed wildcard bug and checkbox bugs in GUI.
568<li>Setting file chooser defaults in GUI.
569<li>Leaving room for growBox in GUI on Mac OS X.
570<li>Properly closing configuration files.
571<li>Updated documentation and examples.
572</ul>
573
574<h3><div>Dec 2004</div> Version 3.2</h3>
575<ul>
576<li>Fixed JDK5.0 processing bugs.
577<li>Fixed optimization bugs.
578<li>Fixed relative paths in Ant task.
579<li>Improved speed of shrinking step.
580<li>Updated documentation and examples.
581</ul>
582
583<h3><div>Nov 2004</div> Version 3.1</h3>
584<ul>
585<li>Improved obfuscation and shrinking of private class members.
586<li>Added inlining of interfaces with single implementations.
587<li>Added option to specify obfuscation dictionary.
588<li>Added option to read package visible library class members.
589<li>Extended support for JDK5.0 attributes.
590<li>Fixed various optimization bugs.
591<li>Modified Ant task to accept paths instead of filesets.
592<li>Fixed two Ant task bugs.
593<li>Updated documentation and examples.
594</ul>
595
596<h3><div>Aug 2004</div> Version 3.0</h3>
597<ul>
598<li>Added bytecode optimization step, between shrinking step and obfuscation
599    step.
600<li>Generalized filtered recursive reading and writing of jars, wars, ears,
601    zips, and directories.
602<li>Added support for grouping input and output jars, wars, ears, zips, and
603    directories.
604<li>Added support for applying mapping files to library classes.
605<li>Removed <code>-resourcejars</code> option. Resources should now be read
606    using regular <code>-injars</code> options, using filters if necessary.
607<li>Rewrote Ant task. Input and output modification dates are not checked at
608    the moment. Minor changes in XML schema:
609    <ul>
610    <li>Filters now specified using attributes.
611    <li>'<code>outjars</code>' now nested element instead of attribute.
612    <li>'<code>type</code>' attribute of <code>&lt;method&gt;</code> element no
613        longer defaults to '<code>void</code>'.
614    <li><code>&lt;</code> and <code>&gt;</code> characters now have to be
615        encoded in embedded configurations.
616    <li><code>&lt;proguardconfiguration&gt;</code> task no longer accepts
617        attributes.
618    </ul>
619<li>Updated J2ME WTK plugin, now customizable through configuration file.
620<li>Updated GUI.
621<li>Fixed various processing bugs.
622<li>Fixed ReTrace parsing bugs.
623<li>Improved jar compression.
624<li>Updated documentation and examples.
625</ul>
626
627<h3><div>Mar 2004</div> Version 2.1</h3>
628<ul>
629<li>Added support for JDK1.5 classes.
630<li>Added additional wildcard for matching primitive types.
631<li>Added possibility to switch off notes about duplicate class definitions.
632<li>Fixed use of multiple filters on output jars.
633<li>Fixed option to keep all attributes.
634<li>Fixed various Ant task bugs.
635<li>Updated documentation and examples.
636</ul>
637
638<h3><div>Dec 2003</div> Version 2.0</h3>
639<ul>
640<li>Added a graphical user interface for ProGuard and ReTrace.
641<li>Added <code>-applymapping</code> option for incremental obfuscation.
642<li>Added support for filtering input and output files.
643<li>Added support for the J++ <code>SourceDir</code> attribute.
644<li>Improved detection of <code>.class</code> constructs.
645<li>Improved handling of misplaced manifest files.
646<li>Improved implementation of ReTrace.
647<li>Worked around String UTF-8 encoding bug affecting foreign characters.
648<li>Fixed exception when ignoring warnings.
649<li>Fixed various Ant task bugs.
650<li>Updated documentation and examples.
651</ul>
652
653<h3><div>Aug 2003</div> Version 1.7</h3>
654<ul>
655<li>Fixed various Ant task bugs.
656<li>Fixed ClassCastException due to explicitly used abstract classes with
657    implicitly used interfaces targeted at JRE1.2 (the default in JDK1.4).
658<li>Fixed <code>-defaultpackage</code> bug for protected classes and class
659    members.
660<li>Fixed ReTrace bug when retracing without line number tables.
661<li>Worked around zip package problems with duplicate out entries and rogue
662    manifest files.
663<li>Added work-around for handling malformed legacy interface class files.
664<li>Updated documentation and examples.
665</ul>
666
667<h3><div>May 2003</div> Version 1.6</h3>
668<ul>
669<li>Added support for Ant.
670<li>Added support for the J2ME Wireless Toolkit.
671<li>Added support for reading and writing directory hierarchies.
672<li>Added option for specifying resource jars and directories.
673<li>Added support for wildcards in class member specifications.
674<li>Improved handling of the <code>-defaultpackage</code> option.
675<li>Improved stack trace parsing in ReTrace tool.
676<li>Fixed processing of libraries containing public as well as non-public
677    extensions of non-public classes.
678<li>Fixed examples for processing libraries, midlets, and serializable code.
679<li>Updated documentation and examples.
680</ul>
681
682<h3><div>Jan 2003</div> Version 1.5</h3>
683<ul>
684<li>Fixed processing of retrofitted library interfaces.
685<li>Fixed processing of <code>.class</code> constructs in internal classes
686    targeted at JRE1.2 (the default in JDK1.4).
687<li>Fixed <code>-dump</code> option when <code>-outjar</code> option is not
688    present.
689<li>Updated documentation and examples.
690</ul>
691
692<h3><div>Nov 2002</div> Version 1.4</h3>
693<ul>
694<li>Now copying resource files over from the input jars to the output jar.
695<li>Added option to obfuscate using lower-case class names only.
696<li>Added better option for obfuscating native methods.
697<li>Added option not to ignore non-public library classes.
698<li>Added automatic <code>.class</code> detection for classes compiled with
699    Jikes.
700<li>Updated documentation and examples.
701</ul>
702
703<h3><div>Sep 2002</div> Version 1.3</h3>
704<ul>
705<li>Added support for wildcards in class names.
706<li>Added tool to de-obfuscate stack traces.
707<li>Added options to print processing information to files.
708<li>Added option to rename source file attributes.
709<li>Fixed processing of implicitly used interfaces targeted at JRE1.2 (the
710    default in JDK1.4)
711<li>Fixed processing of configurations with negated access modifiers.
712<li>Fixed duplicate class entry bug.
713<li>Updated documentation and examples.
714</ul>
715
716<h3><div>Aug 2002</div> Version 1.2</h3>
717<ul>
718<li>Improved speed.
719<li>Fixed processing of classes targeted at JRE1.2 (the default in JDK1.4)
720    with references to their own subclasses.
721<li>Fixed processing of static initializers in J2ME MIDP applications.
722<li>Fixed processing of retrofitted interfaces (again).
723<li>Added more flexible handling of white space in configuration.
724<li>Updated documentation.
725</ul>
726
727<h3><div>Jul 2002</div> Version 1.1</h3>
728<ul>
729<li>Added automatic detection of <code>Class.forName("MyClass")</code>,
730    <code>MyClass.class</code>, and
731    <code>(MyClass)Class.forName(variable).newInstance()</code> constructs.
732    This greatly simplifies configuration.
733<li>Added options to keep class names and class member names without affecting
734    any shrinking. They are mostly useful for native methods and serializable
735    classes.
736<li>Fixed processing of retrofitted interfaces.
737<li>Added handling of missing/invalid manifest file in input jar.
738<li>Updated documentation and examples.
739</ul>
740
741<h3><div>Jun 2002</div> Version 1.0</h3>
742<ul>
743<li>First public release, based on class parsing code from Mark Welsh's
744    <b>RetroGuard</b>.
745</ul>
746
747<hr />
748<address>
749Copyright &copy; 2002-2014
750<a target="other" href="http://www.lafortune.eu/">Eric Lafortune</a> @ <a target="top" href="http://www.saikoa.com/">Saikoa</a>.
751</address>
752
753</body>
754</html>
755