public static void main(String[] args) {

    AnalysisInputLocation<JavaSootClass> inputLocation = PathBasedAnalysisInputLocation.create(
            Paths.get("hutool-db-5.7.18.jar"), SourceType.Application);

    JavaLanguage language = new JavaLanguage(8);

    JavaProject project = JavaProject.builder(language).addInputLocation(inputLocation).build();
    JavaView view = project.createView();
    AbstractCallGraphAlgorithm cha = new ClassHierarchyAnalysisAlgorithm(view);
    Stream<MethodSignature> methods = view.getClasses()
            .stream()
            .flatMap(c -> c.getMethods().stream())
            .map(SootClassMember::getSignature);
    CallGraph graph = cha.initialize(methods.collect(Collectors.toList()));
    System.out.println(graph);
  }