Hiring guide for Jabaco Engineers

Jabaco Developer Hiring Guide

Jabaco is a high-level object-oriented programming language developed in 2008, designed to be a modern alternative to Visual Basic. It was created by Manuel Siekmann, a German software developer, and is maintained by the Jabaco community. The language operates on the Java Virtual Machine, allowing for cross-platform functionality. Jabaco's syntax is similar to that of Visual Basic, making it accessible for beginners and those transitioning from VB. Its development environment, Jabaco Framework, provides a graphical interface and tools for creating desktop applications.

Ask the right questions secure the right Jabaco talent among an increasingly shrinking pool of talent.

First 20 minutes

General Jabaco app knowledge and experience

The first 20 minutes of the interview should seek to understand the candidate's general background in Jabaco application development, including their experience with various programming languages, databases, and their approach to designing scalable and maintainable systems.

How would you define Jabaco?
Jabaco is a high-level object-oriented programming language that is syntactically similar to Visual Basic. It allows developers to create powerful applications with a visual interface.
What are the main features of Jabaco?
Jabaco has several features such as a modern IDE, a framework that is similar to VB6, a compiler that creates bytecode, and a comfortable debugger.
How would you install Jabaco on your system?
To install Jabaco, you need to download the installer from the official website, run the installer, and follow the instructions.
What is the use of the Jabaco framework?
The Jabaco framework is used to create applications with a graphical user interface. It provides a set of classes and methods that simplify the process of creating windows, buttons, text fields, and other UI elements.
Describe the difference between Jabaco and Java.
While both Jabaco and Java are object-oriented programming languages that compile to bytecode, they have different syntaxes. Jabaco's syntax is similar to Visual Basic, while Java's syntax is similar to C and C++. Additionally, Jabaco includes a framework for creating GUI applications, while Java requires the use of additional libraries for this purpose.
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What you’re looking for early on

Has the candidate demonstrated a strong understanding of Jabaco's syntax and structure?
Does the candidate have experience with Java?
Has the candidate shown problem-solving skills?
Does the candidate have experience with Visual Basic?

Next 20 minutes

Specific Jabaco development questions

The next 20 minutes of the interview should focus on the candidate's expertise with specific backend frameworks, their understanding of RESTful APIs, and their experience in handling data storage and retrieval efficiently.

How would you create a new project in Jabaco?
To create a new project in Jabaco, you need to select 'New Project' from the 'File' menu, choose the type of project you want to create, and then provide a name for the project.
What are the data types supported by Jabaco?
Jabaco supports several data types, including Integer, Double, Boolean, String, and Object.
How would you declare a variable in Jabaco?
To declare a variable in Jabaco, you use the Dim statement, followed by the name of the variable and its type. For example, 'Dim x As Integer'.
Describe the difference between a function and a subroutine in Jabaco.
In Jabaco, a function is a block of code that returns a value, while a subroutine is a block of code that performs a task but does not return a value.
How would you handle exceptions in Jabaco?
In Jabaco, you can handle exceptions using the Try...Catch...Finally statement. The Try block contains the code that might throw an exception, the Catch block contains the code to handle the exception, and the Finally block contains the code that is always executed, whether an exception is thrown or not.
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The ideal back-end app developer

What you’re looking to see on the Jabaco engineer at this point.

At this point, a skilled Jabaco engineer should demonstrate strong problem-solving abilities, proficiency in Jabaco programming language, and knowledge of software development methodologies. Red flags include lack of hands-on experience, inability to articulate complex concepts, or unfamiliarity with standard coding practices.

Digging deeper

Code questions

These will help you see the candidate's real-world development capabilities with Jabaco.

What does the following simple Jabaco code do?
Dim a As Integer
a = 5
Print a
This code declares an integer variable 'a', assigns the value 5 to it and then prints the value of 'a', which is 5.
What will be the output of the following Jabaco code?
Dim a As Integer
Dim b As Integer
a = 5
b = 10
Print a + b
This code declares two integer variables 'a' and 'b', assigns the values 5 and 10 to them respectively, and then prints the sum of 'a' and 'b', which is 15.
What does the following Jabaco array manipulation code do?
Dim a(5) As Integer
For i = 0 To 5
    a(i) = i * 2
For Each element In a
    Print element
This code declares an integer array 'a' with 6 elements, assigns each element a value which is twice its index, and then prints all the elements of the array.
What does the following Jabaco threading code do?
Dim a As New Thread(AddressOf MyFunction)
Sub MyFunction()
    Print "Hello, World!"
End Sub
This code declares a new thread 'a', assigns it a function 'MyFunction' which prints 'Hello, World!', and then starts the thread, causing 'Hello, World!' to be printed.

Wrap-up questions

Final candidate for Jabaco Developer role questions

The final few questions should evaluate the candidate's teamwork, communication, and problem-solving skills. Additionally, assess their knowledge of microservices architecture, serverless computing, and how they handle Jabaco application deployments. Inquire about their experience in handling system failures and their approach to debugging and troubleshooting.

What is the purpose of the Option Explicit statement in Jabaco?
The Option Explicit statement in Jabaco forces the explicit declaration of all variables. This can help prevent errors caused by typos in variable names, as any undeclared variable will be caught at compile time.
How would you create a custom class in Jabaco?
To create a custom class in Jabaco, you use the Class...End Class statement. Inside this statement, you can declare properties, methods, and events for the class.
What are the access modifiers in Jabaco and what do they do?
Jabaco has three access modifiers: Public, Private, and Protected. Public members are accessible from any code, Private members are only accessible from within the same class, and Protected members are accessible from the same class and its subclasses.

Jabaco application related

Product Perfect's Jabaco development capabilities

Beyond hiring for your Jabaco engineering team, you may be in the market for additional help. Product Perfect provides seasoned expertise in Jabaco projects, and can engage in multiple capacities.