How to tell gradle to download old version

I had the same problem here. To put long answer short, upgrade your gradlew using the system gradle tool. This link provides detailed steps on how install gradle 5. I had a similar problem: my default gradle wrapper was version 4. I have the similar issue in Windows with redhat java version, edited the gradle-wrapper.

I had the same issue in Windows. My gradle configuration was to set use JDK1. SDK Packages was located in. JDK was located in. My suggestion is:. I was facing the same issue in Docker setup, while I was trying to install Gradle I have to install a later version to fix the issue. You might missed to install maven please install the maven then please checked. As others have mentioned, Java 11 support was added in Gradle 5.

The solution is to upgrade your Gradle wrapper:. To fix these, edit build. I ran into the same issue in Ubuntu In my case, apt installed gradle version 4. The already-install java version was Then I repeated the project initialiation using gradle init with the defaults. After that,. I later read a comment regarding a change in format of the output from java --version that caused gradle to break, which was fixed in a later version of gradle.

Found on docs. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Gradle: Could not determine java version from ' Asked 2 years, 10 months ago. Configure the project, according to conversions e.

This is typically used within a build. Binary plugins can reside with a build script, with the project hierarchy or externally in a plugin JAR. You can use the same plugin for multiple times. There are two types of plugins one is script plugin and second is binary plugin. Script plugins can be applied from a script on the local filesystem or at a remote location. Take a look at the following code snippet.

It is used to apply the other. Each plugin is identified by plugin id. Some core plugins use short names to apply the plugin id and some community plugins use fully qualified name for plugin id. Sometimes, it allows to specify the class of plugin. It shows how to apply java plugin by using its type. Use the below code in build. Take a look into the following code for applying core plugin using short name. Take a look into the following code for applying community plugin using short name.

While creating a custom plugin, you need to write an implementation of plugin. Gradle instantiates the plugin and calls the plugin instance using Plugin. The following example contains a greeting plugin, which adds a hello task to the project. Take a look into the following code and use this code in build. Most of the plugins need the configuration support from the build script. The Gradle project has an associated ExtensionContainer object that helps to track all the setting and properties being passed to plugins.

Let's add a simple extension object to the project. Here, we add a greeting extension object to the project, which allows you to configure the greeting. In this example, GreetingPlugin is a simple, old Groovy object with a field called message. The extension object is added to the plugin list with the name greeting.

This object, then becomes available as a project property with the same name as the extension object. Gradle adds a configuration closure for each extension object, so you can group the settings together. Gradle provides a command line to execute build script. It can execute more than one task at a time. This chapter explains how to execute multiple tasks using different options. You can execute multiple tasks from a single build file.

Gradle can handle the build file using gradle command. This command will compile each task in such an order that they are listed and execute each task along with the dependencies using different options.

Task3 and task4 depends on task 1 and task2. Take a look at the following diagram. In the above 4 tasks are dependent on each other represented with an arrow symbol. Copy can paste it into build. While excluding a task from the execution, you can use —x option along with the Gradle command and mention the name of the task, which you want to exclude.

Gradle will abort execution and fail the build as soon as any task fails. You can continue the execution, even when a failure occurs. For this, you have to use —continue option with the gradle command.

It handles each task separately along with their dependences. The main point is that it will catch each encountered failure and report at the end of the execution of the build. Suppose, if a task fails, then the dependent subsequent tasks also will not be executed. When you run the gradle command, it looks for a build file in the current directory.

You can use the —b option to select a particular build file along with absolute path. The following example selects a project hello from myproject. Gradle provides several built-in tasks for retrieving the information details regarding the task and the project. This can be useful to understand the structure, the dependencies of your build and for debugging the problems.

You can use project report plugin to add tasks to your project, which will generate these reports. You can list the project hierarchy of the selected project and their sub projects using gradle —q projects command. Use the following command to list all the project in the build file.

Here is the example,. The report shows the description of each project if specified. You can use the following command to specify the description. Paste it in the build. First of all, we have to add java plugin to the build script, because, it provides the tasks to compile Java source code, to run the unit tests, to create a Javadoc and to create a JAR file. Whenever you add a plugin to your build, it assumes a certain setup of your Java project similar to Maven.

Take a look at the following directory structure. This silently broke a bunch of scripts and callbacks because of class cast exceptions and such. The solution was to rewrite the scripts in such a way to import the Java Long class and use that directly to express large integers.

The most important breaking issues I've found were not necessarily in our code base, but in dependencies. Libraries that include libraries that include libraries, all doing their own thing, a lot of the time involving some pretty scary reflection stuff for some unexplained reason.

Blindly upgrading libraries only gets you so far, sometimes a dependency gets abandoned and you need to find a replacement and rewrite your code to call the APIs in the right manner to be backwards compatible enough. Why do people bend over so far backwards doing reflection that isn't specified? Because Java, particularly pre-8 Java, sucks so bad if you try to actually write your whole application in it.

I always found this really frustrating when making the argument for Scala. Yes, Scala-the-language is more complex than Java-the-language. But it's not more complex than the pile of reflection magic that anyone who tries to write a nontrivial system in Java actually ends up using. I try to do everything in plain-old Java, and my code just keeps running release to release. From what I've seen: to add automagic functionality, syntactic sugar and wrapper methods for libraries.

Reflection and class loader shenanigans to shoot them selves in the foot. Either because there's no other way to do it, or because the official way is too slow. It is the dependencies. We bit the bullet and cut over most everything to Java 11 last year.

All that was less than a week to sort. The real work were with the older 3rd party libraries not making the jump. You end up with turtles all the way down in some cases. Those took a serious amount of hunting for replacement. Java 11 was a substantial performance improvement. The jump for us to Java 17 will happen this winter, and looks to be a non-issue so far.

KronisLV 43 days ago root parent prev next [—]. I sadly didn't write everything down, or didn't keep references to the GitHub issues, but here's a few of the things that i ran into. When you stumble upon something like that, at best you can import a Maven dependency with a version that has what you need, at worst you need to rewrite the code to use another library or set of libraries. If you have any low level logic like custom class loaders written against older JDK versions think before 8 , then they'll be forwards compatible until 8 for the most part, but will break afterwards.

Coincidentally, reading code that deals with low level logic is also not easy to do, especially if it's not commented well. If you rely upon reflection, or use advanced language features like the JasperReports framework for generating PDFs, which also has a build step for building the reports , in some cases things might compile but not work at runtime due to class mismatches. Many frameworks need new major versions to support newer releases than JDK 8, for example Spring Boot 1.

In another project that i also migrated, needed to rewrite a lot of web initialization code for Spring Boot 2. Not only that, but with those framework changes, certain things can break in the actual environments. For example, if you package your app as a far. It makes no sense, but packaging it as a. I some other libraries, method names remain the same, but signatures change, or sometimes things just get deprecated and removed - you have to deal with all of that, which is especially unfun in code that isn't commented but that the business depends on to work correctly.

Throw in external factors such as insufficient coverage of tests and you're in for an interesting time. I'm not saying that it's a type of environment that should be condoned, but it's the objective reality in many software projects. It all feels very brittle at times. This is especially a nightmare if your servers were configured manually - personally i'm introducing Ansible and containers to at least isolate the damage of Ops rot, but it's been an uphill battle since day 1.

Here's an exceedingly stupid one: sometimes there are checks in code to make sure that you're using the right version of JDK or even the Oracle JDK , which get confused with the larger versions. It's easy to fix when it's your code, but really annoying when it's external tools - personal nitpick. Addendum: here's something that i expected to break, but didn't. We use myBatis as an ORM. It has XML mapper files that define how to map entities and construct queries against the DB based on that.

Also, it uses Java interfaces and dynamically calls the underlying XML code as necessary. So essentially you have an interface, which has a corresponding XML file in which you have quasi-Java code e.

I hope you move to spring voot first vefore upgrading to JDK11, or vice versa. I'm in the middle of a migration to 11 and my general approach has been to get it compiling on 11 while targeting 8 with --release 8. That seems to catch a great many things that would otherwise fail.

The hardest part thus far was figuring out the appropriate libs to replace Java 8 ee stuff, mostly wrt soap and xml. I'm hoping moving to 11 goes smoothly but we'll see. I'm hoping to have the artifacts to a point where they can run on either 8 or 11 without issues. Just do the upgrade first. The XML part has a lot of life left in it, still lots of advantages over attributes.

AmpsterMan 43 days ago root parent prev next [—]. We had that about a year ago in our product as well, though from Java 7 to Java The idea of using "the latest JDK" is fairly modern in the Java world, so people are still getting used to it.

I think this is one of the few benefits of micro service architectures. You end up with much smaller pieces to migrate over. And if the service is well defined and you have ample logging for endpoints you actually could re-write it. Aa somebody who has had to do a Spring upgrade in the past, from 2. Spring still supports 8 well after it starts supporting Once you reach a certain version of Spring, upgrading the JDK is as simple as changing a 1.

I don't know PrimeFaces, but I have worked with JSP, which does have a flag to set the compiler version in case you were ever thinking about putting java lambda's in JSP files, which is possible but not recommended due to mixing code. The hardest part of upgrading the JDK is going from 8 to 9. After 9 it is much more forgivable. As for Spring, major versions are a pain, as is Hibernate. The other parts of Spring are generally well upgradable if you read the Spring changelogs.

Upgrading Spring and especially major Boot versions is usually much more work than bumping Java version. Boot change how it does config and such which.. DarkmSparks 43 days ago parent prev next [—]. There is more to this now tho, because even their topline recommendation misses the fact that Temurin anagram of runtime only provides a small subset of tested builds you need.

Those were mostly for applets or JWS. And in one targets containers or systems with small amount of disk jlink give more gains than JRE. JREs have basically been replaced with building custom executables via jlink. It basically includes a barebones JVM with only the modules that you need. You no longer have to either distribute or ask your users to download a JRE that includes the kitchen sink, you instead use jlink to create a custom distribution that only includes the modules that your code actually uses.

For example, if your application does not use Swing, jlink won't include it. DarkmSparks 43 days ago root parent prev next [—]. If you are distributing software based on java a 40mb jre in place of a mb jdk is surely preferred. You can build them yourself for each OS you target with jlink, or you can just grab the latest built and tested one from e. Bellsoft - but not Adoptium or Oracle. Java has been "breaking changes" between releases to make python blush for a few years now, 17 finally looks like a worthy migration from 8.

Difference is not MB. And you get jshell, javac all the nice tools that I missed when some wise guys in distro or corp decided JRE is enough.

DarkmSparks 42 days ago root parent next [—]. And jlink wont help you get a jdk for 32bit arm. If you want jdk you don't use jlink. A java. Officially at least it seems that there are no post Java 8 JREs or maybe Java 11 - I don't remember exactly which is a shame. I know I can do it myself but having a small off the shelf runtime sure was convenient. Why should I stick to LTS? All other versions aren't in any way less tested, you should always stick to the newest released JDK version, be it LTS or not, this way you get all the benefits language features, performance gains and security ones security fixes always first land in the newest version, and are backported to the older ones.

Maybe, but those I use didn have any trouble with any java release. Using so called LTS without paying for it is in no way different from using latest. You get similarly tested software and no one to call if you need a security fix asap. Zababa 43 days ago root parent prev next [—]. If most people follow the advice of "sticking to LTS", these versions will have way more users, and thus will be more "battle-tested", as in tested in production.

You can automatically update and maybe that goes well and maybe problems are caught in testing. Regardless those events and changes have over time have increased costs. LTS should mean lower costs both through increased support focus, increased population of active users, and reduced forced change.

You're not wrong But if you don't buy LTS you won't get it. JDK 11 is now at After 6 months you move to the next release, just like most people do with libraries, JDK is just another library, no need to worry about upgrading, just do normal regression like with upgrades of other libs. There are no major releases of JDK, all current ones are minor ones - just like in case of JDK 8 you got new features in minor releases e.

JDK 13 and 15 do get builds. In large installations I have almost always had problems, some little, some big with major version upgrades of Java. Some people who want to run your software may have a policy of only running LTS versions. In some cases, this may be your ops team. OpenJDK serves as the upstream for many Java distributions maybe all? Hence there is nothing special about Java 17 vs 16 when it comes to stability.

Even preview features are production ready I used them in production. Just the api might change or it could be removed, but quality wise it is as good as it can be. For features and performance you might as well just target. NET 6. It has things that have been perpetually 'too hard to implement' read: oracle doesn't want to pay their engineers to impl it and will sue you if you do it yourself like value types, generics without type erasure, no checked exceptions, etc. There's no real reason to use java for new development in Java has a better technology stack.

The JVM is light-years ahead of the. NET runtime. Are you referring to its GCs, compilation tiers, or observability? Not defending Java, but does.

NET support Linux at all? Yes -. At least in my opinion, Linux is the preferred deployment platform for it now unless you have a specific usually older library that only works on Windows. NET 5 finally delivered Linux support but only eleven months ago, so I would test it some before betting the farm.

SideburnsOfDoom 42 days ago root parent next [—]. NET 5 finally delivered Linux support but only eleven months ago The previous versions in this stream. NET Core 2. September 5, alpha01 is released. The commits included in this version can be found here. This release is identical to androidx. This is an optional dependency that helps with more reliable and performant background processing on older API versions.

PeriodicWorkRequest s now support initial delays. Builder to set an initial delay. Added the ability to delegate to one or more registered WorkerFactory s using DelegatingWorkerFactory. Added the ability to customize the Executor used by WorkManager for all its internal book-keeping via Configuration. Improved documentation around WorkRequest. WorkManager 2. This version contains several new APIs. Please note that starting with this version, there will be new features that won't get backported to the 1.

We recommend switching to 2. This version contains some bug fixes. For legacy 1. This version is identical to 2. We recommend targeting this version instead of the legacy 1. All active development will target 2. This version is identical to 1. Once this reaches 2. WorkManager 1. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Ask Question. Asked 8 years, 2 months ago. Active 2 months ago.

Viewed k times. I can't figure out to get this working. Any answer is appreciated and I'm thankful for every hint to the right direction. Improve this question. Have you tried setting org. No need to specify env variables. Plus, I see problems with the CI server this way. Thanks for your suggestion anyway : — bully.

As of a year ago, the org. At any rate, try setting fork to true and forkOptions. Show 3 more comments. Active Oldest Votes. Two ways In gradle. Improve this answer. Jesse Barnum 5, 5 5 gold badges 35 35 silver badges 60 60 bronze badges.

First Zero First Zero The gradle. If you are executing using gradle wrapper you can also do it like. Good if you don't want to touch gradle. This way I can't share project with other developers, who have java in different paths.

There's a difference between options 1 and 2 that should be clarified: In option 1 we are setting the JVM for gradle itself to run under which will also be used to run the compiler task notice that javac itself is a java application , while in option 2 we are just setting javac to be spawned in its own JVM.

If for whatever reason we need a specific JVM for gradle e.