Replace oraclejdk8 with openjdk8 and remove jdk_switcher from Travis (#1967)

Author: songy23

.travis.yml

@@ -5,7 +5,7 @@ language: java
 matrix:
   fast_finish: true
   include:
-  - jdk: oraclejdk8
+  - jdk: openjdk8
     env: TASK=BUILD
     os: linux
 
@@ -22,19 +22,19 @@ matrix:
 #    env: TASK=BUILD
 #    os: linux
 
-  - jdk: oraclejdk8
+  - jdk: openjdk8
     env: TASK=CHECKER_FRAMEWORK
     os: linux
 
   - env: TASK=CHECK_GIT_HISTORY
     os: linux
 
   # Build example projects last, since they are affected by fewer pull requests.
-  - jdk: oraclejdk8
+  - jdk: openjdk8
     env: TASK=BUILD_EXAMPLES_GRADLE
     os: linux
 
-  - jdk: oraclejdk8
+  - jdk: openjdk8
     env: TASK=BUILD_EXAMPLES_MAVEN
     os: linux
 
@@ -59,8 +59,8 @@ script:
   - buildscripts/travis_script
 
 after_success:
-  - if \[ "$TASK" == "BUILD" \] && \[ "$TRAVIS_JDK_VERSION" == "oraclejdk8" \] && \[ "$TRAVIS_OS_NAME" = linux \]; then
-      bash <(curl -s https://codecov.io/bash) ;
+  - if \[ "$TASK" == "BUILD" \] && \[ "$TRAVIS_JDK_VERSION" == "openjdk8" \] && \[ "$TRAVIS_OS_NAME" = linux \]; then
+    bash <(curl -s https://codecov.io/bash) ;
     fi
 
 before_cache:

buildscripts/travis_script

@@ -13,8 +13,6 @@ case "$TASK" in
   "BUILD")
     case "$TRAVIS_OS_NAME" in
       "linux")
-        source /opt/jdk_switcher/jdk_switcher.sh
-        export JAVA8_HOME="$(jdk_switcher home oraclejdk8)"
         case "$TRAVIS_JDK_VERSION" in
           "oraclejdk9")
             ./gradlew clean assemble check --stacktrace
@@ -25,8 +23,7 @@ case "$TASK" in
           "openjdk11")
             ./gradlew clean assemble check --stacktrace
             ;;
-          "oraclejdk8")
-            export JAVA_HOMES="$(jdk_switcher home oraclejdk8)/jre:$(jdk_switcher home oraclejdk9)"
+          "openjdk8")
             ./gradlew clean assemble --stacktrace
             ./gradlew check :opencensus-all:jacocoTestReport
             ./gradlew verGJF