bitbucket server project object getting using java code?

public String getprojectdelete(String projectname){    System.out.println("projectkey:"+projectname);    //Project projectobject=projectSupplier.getByKey(projectname);    Project projectobject=projectService.getByKey(projectname);    System.out.println(projectobject);      //boolean projectdelete=projectService.delete(projectobject);    //System.out.println(projectdelete);     return "project deleted";}

iam trying to get my project object to delete project entirely in controller side iam try this method but it gives me the null data i don't know what mistakes i do ?

in a project iam passing project key ....