I am a new Maven user. I am aware that the default compiler which Maven uses to build its projects with is Javac. However, I want to use JDT Core compiler in order to build.
I tried adding this plugin into my plugins in my root pom, but it doesn't work.
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
<configuration>
<compilerId>eclipse</compilerId>
</configuration>
<dependencies>
<dependency>
<groupId>org.eclipse.jdt.core.compiler</groupId>
<artifactId>ecj</artifactId>
<version>4.4.2</version>
</dependency>
</dependencies>
</plugin>
would appreciate any help.
I got it working:
2.8.8) and 2.9.0 versions).like so:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<compilerId>eclipse</compilerId>
</configuration>
<dependencies>
<dependency>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-compiler-eclipse</artifactId>
<version>2.8.8</version> <!-- => ecj.3.2.2 -->
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>
with:
mvn clean compile -X
we get:
Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
Maven home: C:\Program Files\NetBeans-12.5\netbeans\java\maven\bin\..
Java version: 16.0.2, vendor: Oracle Corporation, runtime: C:\Program
Files\Java\jdk-16.0.2
Default locale: de_DE, platform encoding: UTF-8
OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows
...
...
-- end configuration --
Using compiler 'eclipse'.
Adding ...
CompilerReuseStrategy: reuseCreated
useIncrementalCompilation enabled
Stale source detected: ...
Changes detected - recompiling the module!
Classpath:
...
Source roots:
...\src\main\java
...\target\generated-sources\annotations
incrementalBuildHelper#beforeRebuildExecution
Using JSR-199 EclipseCompiler
ecj: using character set UTF-8
ecj command line: [-noExit, -preserveAllLocals, -g:lines,vars,source, -source, 1.6, -target, 1.6, -encoding, UTF-8, -warn:none, -d, ...\target\classes, -classpath, ...\target\classes;...\target\classes;]
ecj input source files: [C:\DEV\projects\...\Application.java]
incrementalBuildHelper#afterRebuildExecution
------------------------------------------------------------------------
BUILD SUCCESS
------------------------------------------------------------------------
Total time: 3.254 s
Finished at: 2021-11-18T18:03:02+01:00
------------------------------------------------------------------------
To use(try!;) an alternative ecj version, we can:
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<compilerId>eclipse</compilerId>
</configuration>
<dependencies>
<dependency>
<groupId>org.codehaus.plexus</groupId>
<artifactId>plexus-compiler-eclipse</artifactId>
<version>2.8.8</version>
<exclusions>
<exclusion>
<groupId>org.eclipse.jdt</groupId>
<artifactId>ecj</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.eclipse.jdt</groupId>
<artifactId>ecj</artifactId>
<version>3.27.0</version> <!-- 09/15/2021 -->
</dependency>
</dependencies>
</plugin>