JAVA SetUp in System

JAVA ENVIRONMENT SET UP 
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In System Variables

JAVA_HOME : C:\Program Files\Java\jdk1.8.0_144
JDK_HOME  : %JAVA_HOME%
JRE_HOME  : %JAVA_HOME%\jre
CLASSPATH : .;%JAVA_HOME%\lib;%JAVA_HOME%\jre\lib
PATH      : Existing-entries;%JAVA_HOME%\bin


Maven
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In System Variables

1. Add JAVA_HOME as mentioned above
2. MAVEN_HOME/M2_HOME : C:\Program Files\Apache\maven
3. PATH : alreadyExistingPath;%MAVEN_HOME/M2_HOME%\bin

check console: mvn -version


ANT
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In System Variables

ANT_HOME : c:\xx\apache-ant-x.x
PATH : alreadyExistingPath;% ANT_HOME%\bin

check console: ant -v