private static String selectProcess()

in tool/src/main/java/com/alibaba/dcm/tool/DcmTool.java [148:174]

23 lines of code
6 McCabe index (conditional complexity)


    private static String selectProcess() {
        System.out.println("Which java process to attache:");
        final List<VirtualMachineDescriptor> list = VirtualMachine.list();

        // remove current process
        list.removeIf(vm -> vm.id().equals(pid()));

        for (int i = 0; i < list.size(); i++) {
            final VirtualMachineDescriptor vm = list.get(i);
            System.out.printf("%d) %-5s %s%n", i + 1, vm.id(), vm.displayName());
        }

        Scanner in = new Scanner(System.in);
        while (true) {
            System.out.print("?# ");
            final String select = in.nextLine();
            try {
                final int idx = Integer.parseInt(select);
                if (idx > 0 && idx <= list.size()) {
                    return list.get(idx - 1).id();
                }
                System.out.println("Invalid selection!");
            } catch (NumberFormatException e) {
                System.out.println("Invalid input, not number!");
            }
        }
    }