jdk
1.sudo apt-get install openjdk-8-jdk
2.apt-cache search jdk
3.export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
export PATH=$PATH:/usr/lib/jvm/java-8-openjdk-amd64/bin
4.javac -version
jenkins
1.wget -q -O - [https://pkg.jenkins.io/debian-stable/jenkins.io.key](https://pkg.jenkins.io/debian-stable/jenkins.io.key) | sudo apt-key add -
2.Then add the following entry in your /etc/apt/sources.list:
deb [https://pkg.jenkins.io/debian-stable](https://pkg.jenkins.io/debian-stable) binary/ 3.sudo apt-get update
4.sudo apt-get install jenkins
gradle
1.mkdir /opt/gradle_2.14.1
2.sudo wget [https://services.gradle.org/distributions/gradle-2.14.1-all.zip](https://services.gradle.org/distributions/gradle-2.14.1-all.zip)
3.unzip
4.export GRADLE_HOME=/opt/app/gradle-2.14.1
export PATH=$GRADLE_HOME/bin:$PATH
android sdk
1.sudo wget [https://dl.google.com/android/repository/sdk-tools-linux-3859397.zip](https://dl.google.com/android/repository/sdk-tools-linux-3859397.zip)
2.export ANDROID_SDK_HOME=/opt/app/android-sdk-linux
export PATH=$ANDROID_SDK_HOME/tools:$ANDROID_SDK_HOME/platform-tools:$PATH
3.android update sdk --no-ui -u --all --filter platform-tools,android-19,android-25
