I want to make build.xml for following all task and i want to set up jenkins or Hudson for Continuous Integration How should i make build file using apache Ant and how to build all projects using single build file? mkdir MyProjectsjar Compile following project and create jar file javaproject1 package1 javafile1 javafile2 javaproject2 package1 javafiles package2 javafiles javaproject3 package1 javafiles javaproject4 package1 javaproject5 package1 javafiles package2 javafiles javaproject6 package1 javaproject7 package1 javafiles javaproject8 package1 javafiles javaproject9 package1 javafiles package2 javafiles javaproject10 package1 javafiles package2 javafiles javaproject11 package1 javafiles package2 javafiles javaproject12 package1 javafiles package2 javafiles javaproject13 package1 javafiles package2 javafiles javaproject14 package1 javafiles package2 javafiles javaproject15 package1 javafiles package2 javafiles javaproject16 package1 javafiles package2 javafiles javaproject17 package1 javafiles package2 javafiles Copy the above jar files into the folder created in step 1 Compile EJB projects and Create EAR project Compile web projects and other all project and create WAR files copy EAR and WAR files to jboss/default/deploy folder.