Juraj Sallai

Juraj Sallai

Member Since February 8, 2015

7,188

Total Points

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Learn more about when and how points are earned.

Skills & Experience

  • Spoken Languages

    • english
    • czech
    • slovak

84 Achievements

  • Achievement

    Persisting Data with Hibernate

    Hibernate Basics

    Achieved

    Aug 14, 2019

    Persisting Data with Hibernate
  • Achievement

    Getting Started with Hibernate

    Hibernate Basics

    Achieved

    Aug 13, 2019

    Getting Started with Hibernate
  • Achievement

    Data Persistence & ORMs

    Hibernate Basics

    Achieved

    Aug 12, 2019

    Data Persistence & ORMs
  • Achievement

    Using the MVC Architecture with Spring

    Spring Basics

    Achieved

    Aug 6, 2019

    Using the MVC Architecture with Spring
  • Achievement

    Modeling, Storing, and Presenting Data with Spring

    Spring Basics

    Achieved

    Aug 6, 2019

    Modeling, Storing, and Presenting Data with Spring
  • Achievement

    Creating Spring Controllers and Thymeleaf Views

    Spring Basics

    Achieved

    Aug 2, 2019

    Creating Spring Controllers and Thymeleaf Views
  • Achievement

    Concurrency and Error Handling

    Build a Weather App

    Achieved

    Oct 28, 2018

    Concurrency and Error Handling
  • Achievement

    Networking

    Build a Weather App

    Achieved

    Oct 28, 2018

    Networking
  • Achievement

    Exploring an API

    Build a Weather App

    Achieved

    Oct 27, 2018

    Exploring an API
  • Achievement

    The Rest of the Story

    Build an Interactive Story App

    Achieved

    Oct 27, 2018

    The Rest of the Story
  • Achievement

    Finishing the User Interface

    Build an Interactive Story App

    Achieved

    Oct 27, 2018

    Finishing the User Interface
  • Achievement

    The Model-View-Presenter Pattern

    Build an Interactive Story App

    Achieved

    Oct 26, 2018

    The Model-View-Presenter Pattern
  • Achievement

    Intents and Multiple Activities

    Build an Interactive Story App

    Achieved

    Oct 24, 2018

    Intents and Multiple Activities
  • Achievement

    Tuning the User Interface

    Build an Interactive Story App

    Achieved

    Oct 24, 2018

    Tuning the User Interface
  • Achievement

    User Input in Android

    Build an Interactive Story App

    Achieved

    Oct 24, 2018

    User Input in Android
  • Achievement

    Testing and Debugging

    Build a Simple Android App with Java

    Achieved

    Oct 22, 2018

    Testing and Debugging
  • Achievement

    Improving Our Code

    Build a Simple Android App with Java

    Achieved

    Oct 22, 2018

    Improving Our Code
  • Achievement

    Basic Android Programming

    Build a Simple Android App with Java

    Achieved

    Oct 20, 2018

    Basic Android Programming
  • Achievement

    Creating the Screen Layout

    Build a Simple Android App with Java

    Achieved

    Oct 20, 2018

    Creating the Screen Layout
  • Achievement

    Getting Started with Android

    Build a Simple Android App with Java

    Achieved

    Oct 20, 2018

    Getting Started with Android
  • Achievement

    Hello Kotlin!

    Kotlin for Java Developers

    Achieved

    Sep 5, 2018

    Hello Kotlin!
  • Achievement

    Java's Functional Toolset

    Introduction to Functional Programming

    Achieved

    Aug 20, 2018

    Java's Functional Toolset
  • Achievement

    Subqueries

    Querying Relational Databases

    Achieved

    Aug 1, 2018

    Subqueries
  • Achievement

    Set Operations

    Querying Relational Databases

    Achieved

    Jul 25, 2018

    Set Operations
  • Achievement

    Joining Table Data with SQL

    Querying Relational Databases

    Achieved

    Jul 25, 2018

    Joining Table Data with SQL
  • Achievement

    Table Relationships

    Querying Relational Databases

    Achieved

    Jul 24, 2018

    Table Relationships
  • Achievement

    Database Keys

    Querying Relational Databases

    Achieved

    Jul 24, 2018

    Database Keys
  • Achievement

    Database Normalization

    Querying Relational Databases

    Achieved

    Jul 24, 2018

    Database Normalization
  • Achievement

    Date and Time Functions

    Reporting with SQL

    Achieved

    Jul 24, 2018

    Date and Time Functions
  • Achievement

    Aggregate and Numeric Functions

    Reporting with SQL

    Achieved

    Jul 23, 2018

    Aggregate and Numeric Functions
  • Achievement

    Working with Text

    Reporting with SQL

    Achieved

    Jul 20, 2018

    Working with Text
  • Achievement

    Ordering, Limiting and Paging Results

    Reporting with SQL

    Achieved

    Jul 19, 2018

    Ordering, Limiting and Paging Results
  • Achievement

    Handling Errors When Manipulating Data

    Modifying Data with SQL

    Achieved

    Jul 19, 2018

    Handling Errors When Manipulating Data
  • Achievement

    Deleting Data from a Database

    Modifying Data with SQL

    Achieved

    Jul 19, 2018

    Deleting Data from a Database
  • Achievement

    Updating Data in a Database

    Modifying Data with SQL

    Achieved

    Jul 19, 2018

    Updating Data in a Database
  • Achievement

    Adding Data to a Database

    Modifying Data with SQL

    Achieved

    Jul 19, 2018

    Adding Data to a Database
  • Achievement

    Finding the Data You Want

    SQL Basics

    Achieved

    Jul 18, 2018

    Finding the Data You Want
  • Achievement

    Getting Data from a Database

    SQL Basics

    Achieved

    Jul 18, 2018

    Getting Data from a Database
  • Achievement

    Data, Databases and SQL

    SQL Basics

    Achieved

    Jul 18, 2018

    Data, Databases and SQL
  • Achievement

    Meet Selenium

    Introduction to Selenium

    Achieved

    Jul 16, 2018

    Meet Selenium
  • Achievement

    Workflows

    Git Basics

    Achieved

    Jul 16, 2018

    Workflows
  • Achievement

    Working With Remote Repositories

    Git Basics

    Achieved

    Jul 13, 2018

    Working With Remote Repositories
  • Achievement

    Merging

    Git Basics

    Achieved

    Jul 12, 2018

    Merging
  • Achievement

    Branches

    Git Basics

    Achieved

    Jul 12, 2018

    Branches
  • Achievement

    GitHub and Other Remote Repositories

    Introduction to Git

    Achieved

    Jul 12, 2018

    GitHub and Other Remote Repositories
  • Achievement

    Managing Committed Files

    Introduction to Git

    Achieved

    Jul 11, 2018

    Managing Committed Files
  • Achievement

    First Commits

    Introduction to Git

    Achieved

    Jul 11, 2018

    First Commits
  • Achievement

    What to Test

    Unit Testing in Java

    Achieved

    Jun 21, 2018

    What to Test
  • Achievement

    Advanced Tooling

    Local Development Environments

    Achieved

    Jun 14, 2018

    Advanced Tooling
  • Achievement

    IDE Exploration

    Local Development Environments

    Achieved

    Jun 11, 2018

    IDE Exploration
  • Achievement

    How it Works

    Local Development Environments

    Achieved

    Jun 10, 2018

    How it Works
  • Achievement

    Efficiency!

    Java Data Structures

    Achieved

    Jun 7, 2018

    Efficiency!
  • Achievement

    Exploring the Java Collections Framework

    Java Data Structures

    Achieved

    May 30, 2018

    Exploring the Java Collections Framework
  • Achievement

    How To Test

    Unit Testing in Java

    Achieved

    May 4, 2018

    How To Test
  • Achievement

    Why Test

    Unit Testing in Java

    Achieved

    Apr 26, 2018

    Why Test
  • Achievement

    Spring Components and Configuring Our App

    Spring Basics

    Achieved

    Apr 24, 2018

    Spring Components and Configuring Our App
  • Achievement

    Setting Up Your Local Environment for Spring Development

    Spring Basics

    Achieved

    Apr 23, 2018

    Setting Up Your Local Environment for Spring Development
  • Achievement

    Organizing Data

    Java Data Structures

    Achieved

    Mar 16, 2018

    Organizing Data
  • Achievement

    Getting There

    Java Data Structures

    Achieved

    Mar 12, 2018

    Getting There
  • Achievement

    Gotchas and Wins

    Java Arrays

    Achieved

    Mar 9, 2018

    Gotchas and Wins
  • Achievement

    Iteration

    Java Arrays

    Achieved

    Mar 9, 2018

    Iteration
  • Achievement

    Creation

    Java Arrays

    Achieved

    Mar 9, 2018

    Creation
  • Achievement

    Delivering the MVP

    Java Objects

    Achieved

    Mar 8, 2018

    Delivering the MVP
  • Achievement

    Creating the MVP

    Java Objects

    Achieved

    Mar 8, 2018

    Creating the MVP
  • Achievement

    Harnessing the Power of Objects

    Java Objects

    Achieved

    Mar 7, 2018

    Harnessing the Power of Objects
  • Achievement

    Meet Objects

    Java Objects

    Achieved

    Mar 7, 2018

    Meet Objects
  • Achievement

    The Model-View-Controller Pattern

    Build an Interactive Story App (Retired)

    Achieved

    Jul 21, 2015

    The Model-View-Controller Pattern
  • Achievement

    Intents and Multiple Activities

    Build an Interactive Story App (Retired)

    Achieved

    Mar 24, 2015

    Intents and Multiple Activities
  • Achievement

    User Input

    Build an Interactive Story App (Retired)

    Achieved

    Mar 16, 2015

    User Input
  • Achievement

    Publishing on Google Play

    Publish an Android App

    Achieved

    Mar 9, 2015

    Publishing on Google Play
  • Achievement

    Testing and Debugging

    Build a Simple Android App (2014)

    Achieved

    Mar 8, 2015

    Testing and Debugging
  • Achievement

    Improving Our Code

    Build a Simple Android App (2014)

    Achieved

    Mar 5, 2015

    Improving Our Code
  • Achievement

    Coding the Fun Facts

    Build a Simple Android App (2014)

    Achieved

    Mar 4, 2015

    Coding the Fun Facts
  • Achievement

    Basic Android Programming

    Build a Simple Android App (2014)

    Achieved

    Mar 3, 2015

    Basic Android Programming
  • Achievement

    Creating the Initial Screen Layout

    Build a Simple Android App (2014)

    Achieved

    Mar 1, 2015

    Creating the Initial Screen Layout
  • Achievement

    Getting Started with Android

    Build a Simple Android App (2014)

    Achieved

    Feb 22, 2015

    Getting Started with Android
  • Achievement

    Delivering the MVP

    Java Objects (Retired)

    Achieved

    Feb 22, 2015

    Delivering the MVP
  • Achievement

    Creating the MVP

    Java Objects (Retired)

    Achieved

    Feb 16, 2015

    Creating the MVP
  • Achievement

    Harnessing the Power of Objects

    Java Objects (Retired)

    Achieved

    Feb 11, 2015

    Harnessing the Power of Objects
  • Achievement

    Meet Objects

    Java Objects (Retired)

    Achieved

    Feb 9, 2015

    Meet Objects
  • Achievement

    Perfecting the Prototype

    Java Basics

    Achieved

    Feb 8, 2015

    Perfecting the Prototype
  • Achievement

    Using your New Tools

    Java Basics

    Achieved

    Feb 8, 2015

    Using your New Tools
  • Achievement

    Getting Started with Java

    Java Basics

    Achieved

    Feb 8, 2015

    Getting Started with Java
  • Achievement

    Newbie

    Achieved

    Feb 8, 2015

    Newbie