Choosing the correct JRE version in Gradle with Eclipse

Question

I\'m using Gradle with the Eclipse plugin to generate project files for my project, but I can\'t get it to put the correct JRE version in .classpath. I can

Answer 1

I found that the proposed solution causes duplicate entries on subsequent 'gradle eclipse' executions. Borrowing some code from Specifiy JRE Container with gradle eclipse plugin, I came up with the following which seems to work:

project.afterEvaluate {
  // use jre lib matching version used by project, not the workspace default
  if (project.sourceCompatibility != null) {
    def target = project.sourceCompatibility.toString()
    def containerPrefix = "org.eclipse.jdt.launching.JRE_CONTAINER"
    def containerSuffix
    if (target =~ /1.[4-5]/) {
      containerSuffix = '/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-' + target
    } else if (target =~ /1.[6-8]/) {
      containerSuffix = '/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-' + target
    }
    if (containerSuffix != null) {
      project.eclipse.classpath {
        containers.removeAll { it.startsWith(containerPrefix) }
        containers.add(containerPrefix + containerSuffix)
      }
    }
  }
}