Mixed Groovy and Java Class in Gradle Build

Have seen this question often before. If we have a groovy script that builds an object that a java class needs, why is it not seen during compile time ? Looked for ages for the answer to this. Unless both/all java and groovy sources live together in sourceSets.src.main.groovy directory, the groovy compile cannot ‘see’ the class from the groovy source to pass tho that java compiler when requested. Using

apply plugin: ‘groovy’

takes precedence over the java plugin. Any  xxx.java source files are passed to the java compiler by the groovy mechanism. The groovy classes are invisible to the java compiler. Assume this example



the Person class created in the groovy step cannot be seen by the java compiler. Drat ! But there is a work-around until gradle change this behaviour. Try this in build.gradle :

sourceSets.main.java.srcDirs = []
sourceSets.main.groovy.srcDir 'src/main/java'

hope it works for you :)

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