JAVA BUILD AUTOMATION using Javac | Maven | Ant

JAVA BUILD AUTOMATION

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JAVA BUILD AUTOMATION
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Interpreted --

    Input in High Level Language > Interpreter > Converts to Machine Lang > CPU
    Examples: shell scripts, php

Compiled --

    Program is written > Program is Compiled > Get Executable > Run Exe > see output
    Example: Java, Android, C, C++


Java Build:
   Developers Code --> program.java  ---> compiler --> creates program.class ---> From program.class create program.jar ---> execute program.jar





(A) - Simple Java Compilation using Jenkins & Core Compilation Commands

Prerequisites: Jenkins should have git plugin and installed with Java compiler.
yum install java-devel  # one time task in Jenkins Server

Repo Reference: https://github.com/prasanjit-/hello-java

#Build Steps:
echo "Compiling ... "
javac HelloWorld.java
echo "Execution ..."
java HelloWorld
jar cvfe HelloWorld.jar HelloWorld *.class
echo "============================"
#Execution:
java -jar HelloWorld.jar
echo "============================"


(B) - Simple Java Compilation using Jenkins & Maven

Prerequisites: Jenkins should have - Maven Integration plugin and maven installed in host.
# yum install maven # one time task in Jenkins Server

Repo Reference: https://github.com/prasanjit-/hello-java-maven

#Build Steps:
# export JAVA_HOME='/usr/lib/jvm/java-1.8.0-openjdk/'
# mvn package

(C) - Simple Java Compilation using Jenkins & Ant

Prerequisites: Jenkins should have - Ant Integration plugin and ant installed in host.
# yum install ant # one time task in Jenkins Server

Repo Reference: https://github.com/prasanjit-/hello-java-ant



#Build Steps:
# export JAVA_HOME='/usr/lib/jvm/java-1.8.0-openjdk/'
# ant compile jar run





ssh://user@other.host.com/~/repos_path/reponame.git