searching for java8-openjfx build issue

test.gradle

ext.javaBinary = "/usr/lib/jvm/java-8-openjdk/bin/java"
def inStream = new java.io.BufferedReader(new java.io.InputStreamReader(new java.lang.ProcessBuilder(ext.javaBinary, "-version").start().getErrorStream()));
try {
    String line = inStream.readLine();
    while (line != null) {
        if (line.contains("Runtime Environment (build ")) {
            int ib = line.indexOf(" (build ");
            if (ib != -1) {
                String ver = line.substring(ib + 8, line.size() - 1);
                project.ext.set("jdkRuntimeVersion", ver);
            }
        }
        line = inStream.readLine();
    }
} finally {
    inStream.close();
}
if (!project.hasProperty("jdkRuntimeVersion")) throw new Exception("Unable to determine the version of Java in JDK_HOME");
System.out.println(ext.jdkRuntimeVersion)