>> Java ANT

Java ANT

To use ANT, create a file with the name "Build.xml" inside any Java Project. When you run, you have to run as ANT Build.

Print Message: "Welcome !"

<project name="PrintMessage" default = "class1" basedir = ".">

       <target name = "class1">

              <echo> Welcome ! </echo>           

       </target>     

</project>

OR

<project name="PrintMessage" default = "class1" basedir = ".">

       <target name = "class1">

              <echo message = "Welcome !" />           

       </target>     

</project>

Output:

class1:

     [echo]  Welcome !

BUILD SUCCESSFUL

-------------------------------------------------------------------------------------

<project name="CreateNdeleteFolders" default = "createFolder" basedir = ".">

<!-- This is comment : Below target deletes the existing folders (if already existing otherwise first create the folders and then delete.) -->

       <target name = "deleteFolder"  depends = "createFolder">

              <delete dir = "Folder1" />

              <delete dir = "Folder2" />

              <delete dir = "Folder3" />

       </target>

<!-- Below target creates new folders -->

       <target name = "createFolder">

              <mkdir dir = "Folder1" />

              <mkdir dir = "Folder2" />

              <mkdir dir = "Folder3" />

       </target>

</project>

OutPut:

Buildfile: C:\Path\Build.xml

createFolder:

    [mkdir] Created dir: C:\Path\Folder1

    [mkdir] Created dir: C:\Path\Folder2

    [mkdir] Created dir: C:\Path\Folder3

deleteFolder:

   [delete] Deleting directory C:\Path\Folder1

   [delete] Deleting directory C:\Path\Folder2

   [delete] Deleting directory C:\Path\Folder3

BUILD SUCCESSFUL

Total time: 499 milliseconds

--------------------------------------------------------------------------------------------

COPY FILES AND FOLDERS 

<project name="copyFolderNFiles" default = "copyFiles" basedir = ".">

<!-- Below target copies folders and files -->

<target name = "copyFolder">

<!-- copy folders from src location excluding the folder "Skipfolder" -->

<copydir dest = "C:\destFolder" src="C:\scrFolder" excludes = "**/SkipFolder**"></copydir>

 </target>

<target name = "copyFiles" depends = "copyFolder">

<!-- copy selected files overwritting if already exists -->

<copy todir ="C:\destFolder" overwrite = "true" >        

<fileset dir = "C:\scrFolder" includes = "**/*.java"></fileset> <!-- This copies multiple files with extension "java" -->

</copy>

</target>

</project>

---------------------------------------------------------------------------------------------

Compile and run a java class:

<project name="CompileNrun" default = "run" basedir = "."

<target name = "ToCompile">

<delete dir="build"/>   <!-- delete the folder if already existing -->

<mkdir dir="build/classes"/>            

<javac includeantruntime = "false" srcdir = "C:\srcFolder" destdir = "C:\destFolder" includes = "**/*.java"></javac>  <!-- copile ".java" files in every folder inside src folder -->

</target>

    

  

<target name = "Run" depends = "ToCompile">

<java classname = "packageName.className">

<classpath path="C:\destFolder" />

</java>

</target> 

</project>

Answer:
ToCompile:
   [delete] Deleting directory C:\srcFolder\build    
   [mkdir] Created dir: C:\destFolder\build\classes
   [javac] Compiling 2 source files to C:\destFolder\build\classesRun:
   [java] Hello World.  <!-- The class was executed with this print statement -->
BUILD SUCCESSFUL