如何在Java 1.8中使用com.apple？

Question

When compiling a Java Mac application using Gradle I get errors like this:

error: package com.apple.eawt does not exist

But com.apple.eawt is present in /Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/rt.jar

If I copy rt.jar to some other location and add it to the class path eg by

compile fileTree(dir: '/Users/XXX', include: 'rt.jar')

then it magically works! Is there some trick to persuade Java to use platform dependent stuff in rt.jar ?

Answer 1

I found the solution:

compileJava {
    options.compilerArgs << "-XDignore.symbol.file=true"
    options.fork = true
    options.forkOptions.executable = 'javac'
}

Answer 2

I know this is a bit old but I thought it might be useful to someone. With gradle 3.5 the forkOptions.executable is deprecated. The javaHome property must be used instead:

compileJava {
  options.fork = true
  options.forkOptions.javaHome = new File("${System.properties.'java.home'}")
  options.compilerArgs << "-XDignore.symbol.file=true"
}

See the JavaDoc of the ForkOptions class https://docs.gradle.org/3.5.1/javadoc/org/gradle/api/tasks/compile/ForkOptions.html