The maven-compiler-plugin 3.6 and later versions provide a new way :īut at this time it will not work as the maven-compiler-plugin default version you use doesn't rely on a recent enough version. maven-compiler-plugin with release instead of source & target Since the 3.8.0 of the maven compiler, the default values have changed from 1.5 to 1.6. The -target argument for the Java compiler.Ībout the default values for source and target, note that Since 3.9.0 the default value has changed from 1.6 to 1.7 NOTE: Since 3.8.0 the default value has changed from 1.5 to 1.6. The -source argument for the Java compiler. Since the and the elements in the compiler configuration use the properties and if they are defined.

Using maven-compiler-plugin or / properties are equivalent.Īccording to the Maven documentation of the compiler plugin.

maven-compiler-plugin with source & target It allows to set the source and the target java version with the same version such as this one to specify java 1.8 for both :įeel free to use it if you use Spring Boot. is not referenced in the Maven documentation. Use any of three ways: (1) Spring Boot feature, or use Maven compiler plugin with either (2) source & target or (3) with release. Some other questions are - which way should be used (and when if they are not equal)? Which one is best for multi-module project and what happens if Java version specified in pom is different than version pointed in JAVA_HOME? So are those plugins default, hidden part of Maven pom? Are there any differences between setting source/target in properties and in Maven plugin configuration element? and some other plugins that I didn't declare.

Running mvn package outputs with maven-compiler-plugin:3.1:compile (default-compile) testproj. which suggest that compiler plugin is there even if I don't explicit declare it. I couldn't find clear answer but in process of researching I found that you can also specify Java version in this way: What are the differences beetwen setting Java version in properties and in Maven compiler plugin? but when researching I found that you can also specify Java version in Maven compiler plugin, like that: Īnd then wrap this into plugin management tag to enable child poms usage of this. I'm not very experienced with Maven and while experimenting with multi-module project I started wondering how can I specify Java version for all my child modules in parent Maven pom.

Open source java compiler