running build.xml from java program

Question

i am trying to run ant script from java program.what is the procedure to execute the program How to run build.xml from java program?

here is how iam trying to implement

Process proc = rt.exec("ant -buildfile D:ant\\trail");

regards, techie

actually, i want to create excutable jarfile which on double click will run the antscript — techie, Jul 12 '11 at 11:59

zacheusz · Answer 1 · 2011-07-13T20:43:59.123

Check here Execute Ant From Your Application and look at this example:

      Project project = new Project();
      project.init();
      DefaultLogger logger = new DefaultLogger();
      logger.setMessageOutputLevel(Project.MSG_INFO);
      logger.setErrorPrintStream(System.err);
      logger.setOutputPrintStream(System.out);
      project.addBuildListener(logger);

      File buildFile = new File("buildhtml.xml");
      ProjectHelper.configureProject(project, buildFile);
      project.setProperty("ant.file", buildFile.getAbsolutePath());
      project.setProperty("item", "ant");
      project.setProperty("inputdir", "src/items/ant");
      project.setProperty("outputdir", "build/items/ant");
      project.setProperty("graphics.prefix", "../../");
      try {
         project.executeTarget("checkifuptodate");
      } catch(Exception e) {System.err.println(e.getMessage());}
      // rest of program goes here

It is a better solution than calling Runtime.exec

score 1 · Answer 2 · answered Jul 12 '11 at 11:59

1

Rather than trying to start a windows executable separately, it'd be a more robust and flexible solution to use the Ant API. Docs are included with ant itself, they are not online...

answered Jul 12 '11 at 11:59

Matthew Gilliard

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score -1 · Accepted Answer · edited May 23 '17 at 12:19

-1

Try Runtime.getRuntime().exec("cmd /c start ant.bat"); taken from How do I run a batch file from my Java Application?

edited May 23 '17 at 12:19

Community

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answered Jul 12 '11 at 11:57

Leonard Brünings

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but we have to give build.xml file? then from where we have to give – techie Jul 12 '11 at 12:04
Have you tried `Runtime.getRuntime().exec("cmd /c start ant.bat -buildfile D:ant\\trail");` But as you describe you problem I would suggest a simple runAnt.bat – Leonard Brünings Jul 12 '11 at 12:06
this is what i get Buildfile: D:ant\trail does not exist! Build failed – techie Jul 12 '11 at 12:15
`Runtime.getRuntime().exec("cmd /c start ant.bat -buildfile D:\\ant\\trail");` don't forget the \ after the drive letter – Leonard Brünings Jul 12 '11 at 12:28
The other thing, how would this cmd window close automatically after running the ant command.. – techie Jul 12 '11 at 12:44
as iam doing in eclipse, how can i give build.xml path present in my source directory itself – techie Jul 13 '11 at 05:58

running build.xml from java program

3 Answers3