This will serve as a tracking issue for the Java 9 migration.

Broken at run time (brew test fails or other breakage observed):
(Check mark indicates it was either fixed or pinned to Java 8)

• amdatu-bootstrap amdatu-bootstrap: Update link #22609
• ammonite-repl ammonite-repl 1.0.3 #19699
• apache-flink apache-flink 1.5.0 #28342
• apache-spark apache-spark 2.2.1 #22194
• app-engine-java app-engine-java 1.9.59 #20250
• aspectj aspectj 1.8.13 #20774
• bazel bazel: require Java 8 specifically #20544
• druid druid 0.11.0 #21344
• ecj ecj: delete #28368
• elasticsearch@2.4 https://gist.github.com/ilovezfs/c6d8a7900fa27922fcd55c27cbe69096 elasticsearch@*: fix java version. #26876
• elasticsearch@5.6 elasticsearch@*: fix java version. #26876
• embulk embulk 0.9.1 #23881
• flyway flyway 5.0.2 (updated formula) - Updated flyway verson from 4.2.0 #21601
• hbase hbase: require Java 8 exactly #28346
• javarepl javarepl: require Java 8 specifically #24032
• jing-trang jing-trang: require Java 8 specifically #24033
• jmeter jmeter 4.0 #24034
• jooby-bootstrap jooby-bootstrap: require Java 8 exactly #28311
• jvm-mon jvm-mon: require Java 8 specifically #24035
• kobalt kobalt 1.0.91 #20441
• liquigraph Update recipe to Liquigraph 3.0.2 #22227
• logstash logstash 5.6.3 #19270
• maven https://gist.github.com/ilovezfs/976c6ae6419032695dec14508ab4a986
• maven@3.0 https://gist.github.com/ilovezfs/f8435f90e2dbb328a2e5bae9df2ac803
• maven@3.3 https://gist.github.com/ilovezfs/138feed3e3884c482f8c7b29fb6def3b
• metabase metabase 0.27.2 #21754
• mvnvm mvnvm 1.0.10 #20195
• neo4j Neo4j 3.2.6 #19682
• payara payara 4.1.2.174 #21286
• questdb questdb: require Java 8 specifically #24037
• ringojs ringojs 1.2.0 #19919
• scala@2.10 scala@2.10: require Java 8 specifically #24041
• scala@2.11 scala@2.11: require Java 8 specifically #24045
• scm-manager scm-manager 1.55 #20510
• tomee-webprofile tomee-webprofile: use Java 8 specifically #24038

Broken at build time (brew install --build-from-source fails):

• abcl abcl: coexist with JDK 9 #28312
• avian avian: coexist with JDK 9 #28313
• aws-apigateway-importer aws-apigateway-importer: require Java 8 specifically #28315
• drip drip: require Java 8 specifically #28314
• gssh gssh: require Java 8 specifically #28316
• henplus henplus: require Java 8 exactly #28317
• hexgui hexgui: require Java 8 exactly #28318
• lcm lcm: require Java 8 specifically #28319
• mysql-cluster mysql-cluster: require Java 8 specifically #28320
• opentsdb opentsdb: require Java 8 specifically #28367
• pillar pillar: use Java 8 specifically #28321
• voldemort voldemort: use Java 8 specifically #28322
• wartremover wartremover: use Java 8 specifically #28323
• duck duck 6.2.10 #19938
• gosu gosu 1.14.7 #21414
• groovyserv groovyserv 1.2.0 #25189
• htmlcleaner htmlcleaner 2.21 #20785
• libbluray libbluray 1.0.2 #21646
• swagger-codegen swagger-codegen 2.3.0 #22052

Works at run time (brew test passes if it has a test block) and build time status is unknown or not applicable (bottle unneeded) (NB: may still be broken if the formula has no test block):

• activemq
• akka
• allure
• apache-archiva
• apache-ctakes
• apache-geode
• antlr
• artifactory
• asciidoctorj
• atlassian-cli
• auto-scaling
• avro-tools
• aws-cfn-tools
• aws-cloudsearch
• aws-elasticache
• aws-sns-cli
• cfr-decompiler
• checkstyle
• civl
• clojure
• clojurescript
• closure-compiler
• closure-stylesheets
• cloud-watch
• commandbox (CommandBox 3.9.0 #20661)
• crash
• cromwell
• crowdin
• datomic
• davmail
• denominator
• dependency-check
• derby
• dex2jar
• digdag
• ec2-ami-tools
• ec2-api-tools
• elasticsearch
• elb-tools
• excel-compare
• findbugs
• flume
• fmpp
• fop
• frege-repl
• frege
• galen
• gcviewer
• geoserver
• git-credential-manager
• gitbucket
• glassfish
• golo
• gradle
• grails@2.5
• grakn
• groovy
• groovysdk
• gwt
• h2
• hadoop
• hive
• i2p
• ivy
• jadx
• jasmin
• jbake
• jboss-as
• jboss-forge
• jenkins-lts
• jenkins
• jenv
• jetty-runner
• jetty
• jflex
• jruby
• js-test-driver
• jsawk
• jslint4java
• jsonschema2pojo
• jvmtop
• kawa
• kotlin
• languagetool
• launch4j
• linkerd
• logstash@2.4
• luciddb
• mahout
• mockserver
• narwhal
• nifi
• orc-tools
• orientdb
• pax-runner
• pig
• plantuml
• predictionio
• presto
• procyon-decompiler
• proguard
• rds-command-line-tools
• redpen
• rhino
• sbt
• sbt@0.13
• sbuild
• scala
• scalastyle
• sdedit
• selenium-server-standalone
• selenium-server-standalone@2.45
• sisc-scheme
• sjk
• skinny
• smali
• solr
• solr@5.5
• sonarlint
• sonarqube
• spring-loaded
• spring-roo
• sqoop
• stanford-ner
• stanford-parser
• tailor
• tee-clc
• tika
• titan-server
• tomcat
• tomcat@6
• tomcat@7
• typesafe-activator
• umlet
• vault-cli
• vert.x
• vnu
• walkmod
• wildfly-as
• xmlsectool
• yarn
• yuicompressor
• zanata-client

Non-bottle-unneeded formulae with non-optional depends_on :java not yet using a hard Java 8 req:

• ant
• antlr@2
• apache-forrest
• apollo
• bdsup2sub
• beast
• couchdb-lucene
• duck
• fits
• giter8
• graphviz
• jdnssec-tools
• jhipster
• jpcsp
• jsvc
• libphonenumber
• libreadline-java
• maven@3.1
• maven@3.2
• mesos
• nesc
• pmd
• shogun
• sleuthkit
• tomcat-native
• tomcat@8
• voms