retrolambda | Backport of Java 8 's lambda expressions to Java | Runtime Evironment library

 by   luontola Java Version: License: Apache-2.0

kandi X-RAY | retrolambda Summary

kandi X-RAY | retrolambda Summary

retrolambda is a Java library typically used in Telecommunications, Media, Telecom, Server, Runtime Evironment, Maven applications. retrolambda has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has high support. You can download it from GitHub, Maven.

Just as there was Retroweaver et al. for running Java 5 code with generics on Java 1.4, Retrolambda lets you run Java 8 code with lambda expressions, method references and try-with-resources statements on Java 7, 6 or 5. It does this by transforming your Java 8 compiled bytecode so that it can run on an older Java runtime. After the transformation they are just a bunch of normal .class files, without any additional runtime dependencies. [Read more details] #backported-language-features). There is also [limited support] #known-limitations) for backporting default methods and static methods on interfaces. This feature is disabled by default. Retrolambda supports backporting to Java 7, Java 6 and Java 5 runtimes. And for adventurous developers there are [other backporting tools] that may let you go from Java 5 down to Java 1.4. Nowadays Android Studio has [built-in support for Java 8 features] so that is probably the first thing to try out. Otherwise, Retrolambda works also for Android: Serge Zaitsev has written [an article about it] and there is a [Gradle plugin] #gradle-plugin) which makes it easy.

            kandi-support Support

              retrolambda has a highly active ecosystem.
              It has 3547 star(s) with 224 fork(s). There are 140 watchers for this library.
              There were 1 major release(s) in the last 12 months.
              There are 18 open issues and 105 have been closed. On average issues are closed in 164 days. There are 4 open pull requests and 0 closed requests.
              It has a negative sentiment in the developer community.
              The latest version of retrolambda is

            kandi-Quality Quality

              retrolambda has 0 bugs and 0 code smells.

            kandi-Security Security

              retrolambda has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              retrolambda code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              retrolambda is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              retrolambda releases are not available. You will need to build from source code and install.
              Deployable package is available in Maven.
              Build file is available. You can build the component from source.
              Installation instructions are not available. Examples and code snippets are available.
              retrolambda saves you 2689 person hours of effort in developing the same functionality from scratch.
              It has 5830 lines of code, 631 functions and 87 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed retrolambda and discovered the below as its top functions. This is intended to give you an instant insight into retrolambda implemented functionality, and help decide if they suit your requirements.
            • Launches the target
            • Returns the classpath file
            • Returns the java command
            • Process the classes in the framework
            • If the given method is an accessor method returns an accessor method
            • Checks if the method is visible to the given method
            • Determine if the passed in method is visible to the companion class
            • Run Retrolambda
            • Runs the configuration
            • Returns the list of included files
            • Visit a file
            • Visit all interfaces
            • Generate the source file
            • Generate delegating methods
            • Overrides the default implementation of this method
            • Overrides the visitor to reset the class sequence number
            • Loads a class
            • Gets the classpath
            • Visit public methods
            • Overrides the visitor to look for method calls to invoke
            • Overrides the visitor to visit method stack
            • Transforms a class
            • Implements the visitor to look for generifiers and interfaces
            • Visits a method
            • Overrides the visitor to set the vararg stack
            • Reassign the given lambda or method to the given class
            Get all kandi verified functions for this library.

            retrolambda Key Features

            No Key Features are available at this moment for retrolambda.

            retrolambda Examples and Code Snippets

            No Code Snippets are available at this moment for retrolambda.

            Community Discussions


            Firebase crashlytics not able to read crash reports
            Asked 2022-Apr-11 at 14:08

            I have configured crashlytics as per Firebase Documentation But crash reports not generated and uploaded to server.

            Kindly refer my build details.

            Here is our project-level build.gradle



            Answered 2022-Apr-11 at 14:08

            There was another utility logger library initialized in the application class that prevented crashlytics from collecting log.

            Also the initialization & manifest part is not necessary unless you want to explicitly enable/disable crashlytics working.



            Android : Could not GET/Find get repos from
            Asked 2022-Apr-01 at 19:21

            Trying to run old project with following config in build.gradle (root) file.



            Answered 2022-Apr-01 at 19:21

            if you go to the missing library's Github page, you see that it was available only through jcenter, and since jcenter is down, you need to clone the library and build it yourself and put it on the classpath.



            Building CN1 app doesn't work due to problem with retrolambda
            Asked 2021-Jan-16 at 06:31

            My app won't build for iPhone and Android anymore, apparently due to a problem with retrolambda.

            I haven't build for quite some time (I think 6-7 months), but I don't think the way my app uses lambda functions has changed significantly (but I may be wrong, since I am not sure how to read the error message), so I was wondering if something has changed in the CN1 build process?

            If not, any help on how to 'decode' the below error log to understand the problem would be really great. I think I've identified the offending code, but it seems to be written in the same way that compiled successfully before.



            Answered 2021-Jan-16 at 06:31

            This fails in the retro-lambda stage but has nothing to do with that. See this error:



            Unable to Upgrade my android code to gradle 3.5.3 while using android-apt
            Asked 2020-Feb-24 at 18:23

            I am unable to upgrade code to gradle 3.5.3 when I tried a lot of error occurs.

            here my old code app.gradle



            Answered 2020-Feb-24 at 18:23

            I just added below line in app gradle now it's working here is full discussion.


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install retrolambda

            You can download it from GitHub, Maven.
            You can use retrolambda like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the retrolambda component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer For Gradle installation, please refer .


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
            Find more information at:

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            gh repo clone luontola/retrolambda

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