#Install Default JDK available and it is 1.11.0

sudo apt-get update

sudo apt-get install default-jdk -y

java -version

javac -version

sudo chmod 777 /etc/environment

echo JAVA_HOME="/usr/lib/jvm/java-1.11.0-openjdk-amd64" >> /etc/environment

source /etc/environment

echo $JAVA_HOME

#Install Jenkins

cd ~

wget -q -O - https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add -

sudo echo deb https://pkg.jenkins.io/debian-stable binary/ | sudo tee /etc/apt/sources.list.d/jenkins.list

sudo apt-get update

sudo apt-get install jenkins -y

sudo systemctl status jenkins

#Install Maven

sudo apt-get update -y

sudo apt-get upgrade -y

cd /opt

sudo wget https://www-eu.apache.org/dist/maven/maven-3/3.6.1/binaries/apache-maven-3.6.1-bin.tar.gz

sudo tar -xvzf apache-maven-3.6.1-bin.tar.gz

sudo rm apache-maven-3.6.1-bin.tar.gz

sudo mv apache-maven-3.6.1 maven

sudo touch /etc/profile.d/mavenenv.sh

sudo chmod 777 /etc/profile.d/mavenenv.sh

echo "export PATH=/opt/maven/bin:$"PATH"" >> /etc/profile.d/mavenenv.sh

mvn --version

apt install maven 3.6.1 -y