R3, founded in 2014 by David E Rutter and Todd McDonald, is an enterprise software firm that is pioneering...

Hyperledger Quilt is a one of the business Blockchain tools that aims to facilitate interoperability between ledger systems...

Halving is an event when the reward for mining a new block of cryptocurrency is reduced to half. Halving ensures...

Greedy contracts are contracts that remain alive and lock Ether indefinitely. It does not release Ether in any condition...

The Ethereum Enterprise Alliance (EEA) is a member-led industry organization whose objective is to drive the use...

A channel is a private blockchain overlay which allows for data isolation and confidentiality. Using state channels...

In Java, a static initializer can run code during the initial loading of a class and it guarantees that this code will...

HashSet is better than TressSet in almost every way. It gives O(1) for add(), remove() and contains() operations...

Java Classloader is the part of the Java Runtime Environment (JRE) that loads classes on demand into Java Virtual Machine (JVM)...

In Java, a HashMap works on the concept of hashing...

In Java, most implementations of Map interface provide a constructor to create copy of another map. But the copy method is not synchronized...

In a Map we can lookup for a value by using a distinct key. In a Map with reverse view and lookup, even the values...

In Collection interface remove(Object o) method is used to remove objects from a Collection...

In a Java collection UnsupportedOperationException is thrown when the requested operation is not supported by the collection...

IdentityHashMap class has one tuning parameter for performance improvement: expectedMaxSize...

EnumSet is a specialized implementation of Set...

In a HashMap collection it is very important for a key object to implement hashCode() method and...

Differences between Fail-fast and Fail-safe iterators are as follows...

Remove() method in HashMap uses logic similar to the one used in get() method. First we locate the correct...

An ArrayList is a newer class than a Vector. A Vector is considered a legacy class in Java. The differences are...