Javassist
Byte Buddy
Our great sponsors
Javassist | Byte Buddy | |
---|---|---|
5 | 5 | |
4,011 | 6,006 | |
0.5% | - | |
6.1 | 9.0 | |
3 days ago | 5 days ago | |
Java | Java | |
GNU General Public License v3.0 or later | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Javassist
-
JUnit 5: link tests with task tracker issues
ClassPool comes from Javaassist library. It gives convenient API to retrieve the line number of Java method.
-
Kimmer: Port immer for kotlin/jvm
This problem can be resolved by https://github.com/jboss-javassist/javassist/blob/master/src/main/javassist/util/proxy/DefineClassHelper.java perfectly, I will use some of its code to fix this problem on 0.0.1
-
Bytecode Transformations: The Android Gradle Plugin
Other higher-level abstractions like Javassist: are all based on ASM, but have a nicer and easier-to-understand APIs to deal with.
- Functions hooking
-
Hacking third-party APIs on the JVM
In the following snippet, the transformer uses Javassist:
Byte Buddy
-
Monkey-patching in Java
As seen above, the API exposes the user to low-level bytecode manipulation via byte arrays. It would be unwieldy to do it directly. Hence, real-life projects rely on bytecode manipulation libraries. ASM has been the traditional library for this, but it seems that Byte Buddy has superseded it. Note that Byte Buddy uses ASM but provides a higher-level abstraction.
-
Any news on the Classfile API?
Just a drive-by comment: ByteBuddy is worth a look https://bytebuddy.net/. It is built on top of ASM.
-
Proposed: A new CMake scripting language usable alongside existing one
> can you show an example of how you'd parse, say, a .java.in
The canonical way to do such a thing is through the java annotation processing api [1] and using a tool like java poet [2]. Before you did that, you'd probably decide if you wanted to instead use bytecode generation with a library like bytebuddy [3]
But, assuming for some reason, you wanted to torture yourself and actually consume a java.in file and apply a regex, then you'd probably pull out the "maven-replacer-plugin" [4] and configure that for the task at hand. (or use your favorite templating language plugin. There's a million of them).
Though, to be fair, this really isn't something that comes up in regular java programming due to the nature of the ecosystem. Anything you'd want to codegen likely already has a library and anything you didn't would receive (legitimate) push back.
[1] https://www.baeldung.com/java-annotation-processing-builder
[2] https://github.com/square/javapoet
[3] https://bytebuddy.net/
[4] https://github.com/beiliubei/maven-replacer-plugin
-
is rust the only language to have procedural macros?
Have a look at byte buddy.
-
Byte Buddy on Android made possible
If you've ever used libraries like https://github.com/JakeWharton/hugo or https://hibernate.org/ (if you've ever done some backend development) and wondered how do they seem to add some code/logic into your app just by adding some annotation to some method, or if you ever wondered how mocking frameworks like Mockito can change a class behavior for example, then most likely you're interested in a programming technique that allows to modify existing code, usually known as Aspect oriented programming (also known in Java as Bytecode instrumentation) which, even though it might sound intimidating at first, some really cool tools such as Byte Buddy or AspectJ make it quite easy to accomplish.
What are some alternatives?
Byteman - Byteman Project main repo
Recaf - The modern Java bytecode editor
easydeviceinfo - :iphone: [Android Library] Get device information in a super easy way.
obfuscator
timber - A logger with a small, extensible API which provides utility on top of Android's normal Log class.
threadtear - Multifunctional java deobfuscation tool suite
joda-time-android - Joda-Time library with Android specialization
obfuscator - A java obfuscator (GUI)
StatusBarUtil - A util for setting status bar style on Android App.
Maker - Lightweight, full-featured, low-level dynamic Java class generator designed for ease of use.
OpenKeychain - OpenKeychain is an OpenPGP implementation for Android.