curl -sL https://github.com/shyiko/jabba/raw/master/install.sh | bash && . ~/.jabba/jabba.sh

# Java 8
jabba install zulu@~1.8.272
# Java 11
jabba install zulu@1.11.0-9

echo "zulu@1.8.272" > .jabbarc
cat .jabbarc
jabba use
#ONLY the follow command, NOT `java --version`
java -version
echo $JAVA_HOME
type java

echo "zulu@1.11.0-9" > .jabbarc
cat .jabbarc
jabba use
java --version
# OR
java -version
echo $JAVA_HOME
type java

# open a shell
jabba alias default zulu@1.11.0-9

# open new shell
java --version
# OR
java -version

# open a shell
jabba alias default zulu@1.8.272

#open new shell
# ONLY
java -version

git clone -b basic_000 https://github.com/cnruby/gradle_java.git basic_101
cd basic_101

touch Hello.java
vi Hello.java

javac Hello.java

java Hello
>> Hello world!

touch Nihao.java
vi Nihao.java

javac -d ./buildSrc Nihao.java
#javac -d buildSrc Nihao.java

java -cp ./buildSrc Nihao
#java -cp buildSrc Nihao
#java --class-path ./buildSrc Nihao
#java -classpath ./buildSrc Nihao
>> 世界，你好！

mkdir src
touch ./src/App.java
vi ./src/App.java

javac --help
javac --help | grep class

javac -d ./build ./src/App.java
#javac -d build ./src/App.java

java -cp ./build App
#java -cp build App
#java --class-path ./build App
#java -classpath ./build App
>> Hallo Welt!

# Download
git clone -b basic_101 https://github.com/cnruby/gradle_java.git basic_101

# Use
cd basic_101

javac Hello.java
java Hello

javac -d ./buildSrc Nihao.java
java -cp ./buildSrc Nihao

javac -d ./build ./src/App.java
java -cp ./build App