Cannot build Call Graph from source code

[0x456de]

Hi! I'm very new in sootup (and in Java also). I try to get call grapth within class hierarhy. The code from example work perfect with binaries, but dont work with sources I have no idea what wrong

List<AnalysisInputLocation> inputLocations = new ArrayList<>();
    inputLocations.add(
            new JavaClassPathAnalysisInputLocation("src/test/resources/Callgraph/source/"));
    inputLocations.add(
        new JavaClassPathAnalysisInputLocation(
            System.getProperty("java.home") + "/lib/jrt-fs.jar")); // add rt.jar

    JavaView view = new JavaView(inputLocations);

    JavaIdentifierFactory identifierFactory = JavaIdentifierFactory.getInstance();

    JavaClassType mainClassSignature = identifierFactory.getClassType("B");
    JavaClassType classTypeA  = identifierFactory.getClassType("A");
    MethodSignature mainMethodSignature =
            identifierFactory.getMethodSignature(
                    mainClassSignature, "calc", "void", Collections.singletonList(classTypeA.getClassName()));

    CallGraphAlgorithm algorithm = new ClassHierarchyAnalysisAlgorithm(view);
    CallGraph cg = algorithm.initialize(Collections.singletonList(mainMethodSignature));
    System.out.println(cg);

System out is:

GraphBasedCallGraph(0) is empty

But when i use binary path, it's ok and give me

<A: int calc(int)>:
	from <B: void calc(A)>

<B: void calc(A)>:
	to <A: int calc(int)>
	to <C: int calc(int)>
	to <D: int calc(int)>

<C: int calc(int)>:
	from <B: void calc(A)>

<D: int calc(int)>:
	from <B: void calc(A)>

Please, help me :"(