JUnit - Plug with ANT

We will have an example to demonstrate how to run JUnit using ANT. Follow the steps given below.

Step 1: Download Apache Ant

Download Apache Ant based on the operating system you are working on.

OS Archive Name

Windows apache-ant-1.8.4-bin.zip

Linux apache-ant-1.8.4-bin.tar.gz

Mac apache-ant-1.8.4-bin.tar.gz

Step 2: Set Ant Environment

Set the ANT_HOME environment variable to point to the base directory location, where the ANT libraries are stored on your machine. Let us assume the Ant libraries are stored in the folder apache-ant-1.8.4.

Sr.No. OS & Description

1 Windows

Set the environment variable ANT_HOME to C:\Program Files\Apache Software Foundation\apache-ant-1.8.4

2 Linux

export ANT_HOME = /usr/local/apache-ant-1.8.4

3 Mac

export ANT_HOME = /Library/apache-ant-1.8.4

Append Ant compiler location to the System Path as follows −

OS                 Output                                    

Windows         Append the string %ANT_HOME\bin at the end of the system variable, Path.

Linux         export PATH = $PATH:$ANT_HOME/bin/

Mac                 not required

Step 3: Download JUnit Archive

Download a JUnit Archive that suits your operating system.

OS                 Archive Name                           

Windows         junit4.10.jar

Linux         junit4.10.jar

Mac           junit4.10.jar

Step 4: Create Project Structure

  • Create a folder TestJunitWithAnt in C:\>JUNIT_WORKSPACE.
  • Create a folder src in C:\>JUNIT_WORKSPACE>TestJunitWithAnt.
  • Create a folder test in C:\>JUNIT_WORKSPACE>TestJunitWithAnt.
  • Create a folder lib in C:\>JUNIT_WORKSPACE>TestJunitWithAnt.
  • Create MessageUtil class in C:\>JUNIT_WORKSPACE>TestJunitWithAnt> srcfolder.
* This class prints the given message on console.
public class MessageUtil {
   private String message;

   //@param message to be printed
   public MessageUtil(String message){
      this.message = message; 

   // prints the message
   public String printMessage(){
      return message;
   // add "Hi!" to the message
   public String salutationMessage(){
      message = "Hi!" + message;
      return message;

Create TestMessageUtil class in the folder C:\>JUNIT_WORKSPACE>TestJunitWithAnt>src.

import org.junit.Test;
import org.junit.Ignore;
import static org.junit.Assert.assertEquals;

public class TestMessageUtil {
   String message = "Robert";
   MessageUtil messageUtil = new MessageUtil(message);
   public void testPrintMessage() {
      System.out.println("Inside testPrintMessage()");     

   public void testSalutationMessage() {
      System.out.println("Inside testSalutationMessage()");
      message = "Hi!" + "Robert";

Copy junit-4.10.jar onto the folder C:\>JUNIT_WORKSPACE>TestJunitWithAnt>lib.

Create ANT Build.xml

We'll be using <junit> task in Ant to execute our JUnit test cases.

<project name = "JunitTest" default = "test" basedir = ".">
   <property name = "testdir" location = "test" />
   <property name = "srcdir" location = "src" />
   <property name = "full-compile" value = "true" />
   <path id = "classpath.base"/>
   <path id = "classpath.test">
      <pathelement location = "lib/junit-4.10.jar" />
      <pathelement location = "${testdir}" />
      <pathelement location = "${srcdir}" />
      <path refid = "classpath.base" />

   <target name = "clean" >
      <delete verbose = "${full-compile}">
         <fileset dir = "${testdir}" includes = "**/*.class" />

   <target name = "compile" depends = "clean">
      <javac srcdir = "${srcdir}" destdir = "${testdir}" 
         verbose = "${full-compile}">
         <classpath refid = "classpath.test"/>

   <target name = "test" depends = "compile">
         <classpath refid = "classpath.test" />
         <formatter type = "brief" usefile = "false" />
         <test name = "TestMessageUtil" />

Run the following Ant command.


Verify the output.

Buildfile: C:\JUNIT_WORKSPACE\TestJunitWithAnt\build.xml



   [javac] Compiling 2 source files to C:\JUNIT_WORKSPACE\TestJunitWithAnt\test
   [javac] [parsing started C:\JUNIT_WORKSPACE\TestJunitWithAnt\src\
   [javac] [parsing completed 18ms]
   [javac] [parsing started C:\JUNIT_WORKSPACE\TestJunitWithAnt\src\
   [javac] [parsing completed 2ms]
   [javac] [search path for source files: C:\JUNIT_WORKSPACE\
   [javac] [loading java\lang\Object.class(java\lang:Object.class)]
   [javac] [loading java\lang\String.class(java\lang:String.class)]
   [javac] [loading org\junit\Test.class(org\junit:Test.class)]
   [javac] [loading org\junit\Ignore.class(org\junit:Ignore.class)]
   [javac] [loading org\junit\Assert.class(org\junit:Assert.class)]
   [javac] [loading java\lang\annotation\Retention.class
   [javac] [loading java\lang\annotation\RetentionPolicy.class
   [javac] [loading java\lang\annotation\Target.class
   [javac] [loading java\lang\annotation\ElementType.class
   [javac] [loading java\lang\annotation\Annotation.class
   [javac] [checking MessageUtil]
   [javac] [loading java\lang\System.class(java\lang:System.class)]
   [javac] [loading java\io\PrintStream.class(java\io:PrintStream.class)]
   [javac] [loading java\io\FilterOutputStream.class
   [javac] [loading java\io\OutputStream.class(java\io:OutputStream.class)]
   [javac] [loading java\lang\StringBuilder.class
   [javac] [loading java\lang\AbstractStringBuilder.class
   [javac] [loading java\lang\CharSequence.class(java\lang:CharSequence.class)]
   [javac] [loading java\io\Serializable.class(java\io:Serializable.class)]
   [javac] [loading java\lang\Comparable.class(java\lang:Comparable.class)]
   [javac] [loading java\lang\StringBuffer.class(java\lang:StringBuffer.class)]
   [javac] [wrote C:\JUNIT_WORKSPACE\TestJunitWithAnt\test\MessageUtil.class]
   [javac] [checking TestMessageUtil]
   [javac] [wrote C:\JUNIT_WORKSPACE\TestJunitWithAnt\test\TestMessageUtil.class]
   [javac] [total 281ms]


    [junit] Testsuite: TestMessageUtil
    [junit] Tests run: 2, Failures: 0, Errors: 0, Time elapsed: 0.008 sec
    [junit] ------------- Standard Output ---------------
    [junit] Inside testPrintMessage()
    [junit] Robert
    [junit] Inside testSalutationMessage()
    [junit] Hi!Robert
    [junit] ------------- ---------------- ---------------


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