If everything goes well, you should see the message Then it will compile and run tests with coverage metrics. The ant build will compile the core classes of Ivy and use them to resolve the dependencies (used for some optional features). Go to the directory where you get the Ivy sources (you should see a file named build.xml) and run: You can either get the sources from a release, or get them directly from svn. To check out Ivy sources from apache svn, not required if you build from sources packaged in a releaseīuild instructions have been successfully tested with sun jdk 1.4.2, 1.5.0 and 1.6.0 Procedure Get the source To build Ivy from source it's really easy. Using Ivy in multiple projects environment.

If you are building your Java project using Maven, in Eclipse, or from the command prompt by running mvn install and your build is failing with an error like 'invalid target release: 1.7' or 'invalid target release: 1.8,' then you have come to the right place. In this article, I'll show you why this error occurs and how you can deal with these errors even with higher Java versions, like Java 9 or 10, installed on your machine. The root cause of the problem is that you have specified a higher Java version in your pom.xml file for Maven compiler plugin than what Maven knows in your system, and that's why it's saying invalid target release.Ī simple solution to this problem is either to reduce your target version in pom.xml or install a new Java version if you want to build your project in a higher version.īut, the key to solving this problem is knowing that Maven picks the Java version from the JAVA_HOME variable and not from the PATH environment variable. This means that even if you have JDK 8 installed but if your JAVA_HOME is still referring to JDK 1.7, then you will get this error. Thankfully, you can find that out, meaning which version of Java your Maven is using. Just run the mvn -version command from the command prompt and it will print the value of JAVA_HOME variable and confirm which version of the JDK it is using to build your project.

Recently, I was building a Java project using Maven on my old machine when I encountered this error.

Apache ant 1.7 release dates