Ethereum for Java developers

Use Ethereum to create decentralized applications (or “dapps”) that utilize the benefits of cryptocurrency and blockchain technology. These dapps can be trustworthy, meaning that once they are deployed to Ethereum, they will always run as programmed. They can control digital assets in order to create new kinds of financial applications. They can be decentralized, meaning that no single entity or person controls them and are nearly impossible to censor.

Solidity

Solidity is an object-oriented, high-level language for implementing smart contracts. Smart contracts are programs which govern the behaviour of accounts within the Ethereum state.

pre_get_post Practical Uses

Fred Meyer / July 5, 2016 Posted In: Back-End Development Tags: hooks, pre_get_posts, Up and Running, WordPress APIs, WordPress functions Difficulty: Advanced, Intermediate In WordPress, pre_get_posts is an action that makes it possible to modify an existing WP_Query, before that query is actually run. pre_get_posts offers some solutions that are more performant than writing a … Read more

Querying relationship fields

Documentation  Guides  Querying relationship fields Overview This tutorial will cover the techniques to query relationship fields in both directions. The example used will be “Doctors” and “Locations”. Screenshots To save time, this tutorial will not cover the setup process for the 2 post types and their custom fields. However, the screenshots bellow show the data we will … Read more

HashMap in Java with Examples

HashMap is a part of Java’s collection since Java 1.2. This class is found in java.util package. It provides the basic implementation of the Map interface of Java. It stores the data in (Key, Value) pairs, and you can access them by an index of another type (e.g. an Integer). One object is used as a key (index) to another object (value). If you try to insert the duplicate key, it will replace the element of the corresponding key.

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