Posts
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Simple web QR maker with zxing and Thymeleaf
Encode text into QR Code with zxing and display it using thymeleaf. Live demo here.
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Plain Thymeleaf
Thymeleafis an HTML (and more) template engine for Java. This is the core in action with nothing else. -
Lissajous curve Java
Just a Lissajous curve on Java displayed on a JFrame.
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Java Redis pub/sub example with Jedis
This is a Redis pub/sub example written in Java using Jedis.
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Redis 2022
What is Redis (Remote Dictionary Server) on 2022. What can we do with it. How to scale. How to run it on the cloud.
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A custom annotation to apply currying in Java
I created a custom annotation in order to apply currying to a method or constructor.
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Java @Annotations
If you have been using Java for about a week (probably even less) chances are you have already seen some annotations. Let’s review some stuff about them.
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Currying in Java
Let’s see some examples of how to achieve currying in Java.
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Remove duplicates in unordered array with Java using streams
Heres how to remove duplicates from an unordered primitive int array on Java using streams.
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Remove duplicates in ordered array Java
Heres how to remove duplicates from an ordered primitive int array on Java.
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Quick test
Juat checking if I can post directly from GitHub.
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Binary search trees
A
binary search treeis abinary treewhere the left subtree has smaller elements and the right subtree has larger elements. -
Cycle in Linked list
I’ll show three different ways in which we can detect if theres a loop in a Linked List.
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Priority queue using binary heap
A
priority queueis an abstract data type that saves items with apriorityand when we fetch the next element (poll) we receive the element with the highest priority in the case of amax priority queueor the lowest priority if we are using amin priority queue. -
Queue
My notes on the
queueabstract data type with an implementation using an array in Java. -
Stack
My notes on the
stackabstract data type with an implementation using an array in Java. -
Dynamic array
My notes on
Dynamic arraywith an implementation in Java. -
Linked list
My notes on
Linked listwith an implementation in Java. -
Set if not null Java
Simple ways to check if a value is null before setting it to some object in Java.
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N-Queens backtraking
This is the
N-Queensproblem solution with abacktrakingapproach, look here for the N-Queens brute force approach. -
N-Queens brute force
The
N-Queensproblem consists in finding a position for N chess queens in a board of NxN squares where none of the queens are attacking each other. -
Trying out localstack with JUnit5
I was trying to fake
Amazon Web Servicesusinglocalstackby running it withJunit5and this is what I did. -
Easy Java desktop UI with JavaFX and gluon scene builder
If you need some
GUIfor your desktop Java application you can use thescene builderfrom Gluon to drag and drop controls and you can then export them into a.fxmlfile that you can load usingJavaFX. In this example we are using Java 11 and maven.
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