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Digital Signatures in Java 1. Overview In this tutorial, we’re going to learn about the Digital Signature mechanism and how we can implement it using the Java Cryptography Architecture (JCA). We’ll explore the KeyPair, MessageDigest, Cipher, KeyStore, Certificate, and Signature JCA APIs. We’ll start by understanding what is Digital Signature,… Continue Reading java-digital-signature
Java Weekly, Issue 305 1. Spring and Java ===== >> Spring Cloud Stream – and Spring Integration. [spring.io] Find out how to combine these two to implement function-based streams. >> JVM numeric types – Integer types [blog.scottlogic.com] Everything you always wanted to know about Integer types but were afraid to… Continue Reading java-weekly-305
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Threading Models in Java 1. Introduction Often in our applications, we need to be able to do multiple things at the same time. We can achieve this in several ways, but key amongst them is to implement multitasking in some form. Multi-tasking means running multiple tasks at the same time,… Continue Reading java-threading-models
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Configuring Skip Logic in Spring Batch 1. Introduction By default, any errors encountered during a Spring Batch job processing will make a corresponding step fail. However, there are many situations where we’d rather like to skip the currently processed item for certain exceptions. In this tutorial, we’ll explore two approaches… Continue Reading spring-batch-skip-logic
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Hibernate Error “Not all named parameters have been set” 1. Introduction When working with Hibernate, we can use named parameters to safely pass data into an SQL query. We assign values to query parameters at runtime to make them dynamic. More importantly, this helps prevent SQL injection attacks. However, we… Continue Reading hibernate-error-named-parameters-not-set
How to Determine if a Binary Tree is Balanced 1. Overview Trees are one of the most important data structures in computer science. We’re usually interested in a balanced tree, because of its valuable properties. Their structure allows performing operations like queries, insertions, deletions in logarithmic time. In this tutorial,… Continue Reading java-balanced-binary-tree
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Java Weekly, Issue 304 1. Spring and Java ===== >> A First Look at Java Inline Classes [infoq.com] A deep dive into the LW2 prototype for inline classes from Project Valhalla. >> Spring Cloud Stream – functional and reactive [spring.io] A nice summary of the core features combining Spring Cloud… Continue Reading java-weekly-304
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Spring Path Variables with Thymeleaf 1. Introduction In this short tutorial, we’re going to learn how to use Thymeleaf to create URLs using Spring path variables. We use path variables when we want to pass a value as part of the URL. In a Spring controller, we access these values… Continue Reading spring-thymeleaf-path-variables
Transaction Support in Spring Integration 1. Overview In this tutorial, we’ll take a look at transaction support in the Spring Integration framework. 2. Transactions in Message Flows Spring provides support for synchronizing resources with transactions since the earliest versions. We often use it to synchronize transactions managed by multiple transaction… Continue Reading spring-integration-transaction
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Knapsack Problem Implementation in Java 1. Introduction The knapsack problem is a combinatorial optimization problem that has many applications. In this tutorial, we’ll solve this problem in Java. 2. The Knapsack Problem In the knapsack problem, we have a set of items. Each item has a weight and a worth… Continue Reading java-knapsack
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