import java.util.HashMap; public class Main { public static void main(String[] args) { // Create a new HashMap instance with type safety HashMap contacts = new HashMap(); // Add contacts to the HashMap contacts.
In Java 8 afunctional interfaceis defined as an interface with exactly one abstract method. This even applies to interfaces that were created with previous versions of Java. Java 8 comes with several new functional interfaces in the package,java.util.function. Function<T,R>- takes an object of...
The article helps you to understand what is Java, history pf Java, what is Java used for along with its features and concepts. So, click here to read more about Java
- java.util.concurrent updates JSR 202: Java Class-File Specification Update - Password prompting - Reflective access to parameter names - Service-provider lookup XML - JavaBeans Activation Framework (JAF) 1.1 - JSR 173: Streaming API for XML (StAX) - JSR 181: Web Services Metadata - JSR 22...
Developed by IBM, WAS is written in Java so it can be run on any operating system where Java is supported. While writing this article, Version 9.x of WAS supports Java EE7 Full Profile. You may also hear the word “Liberty” with a connection to WAS. WebSphere Liberty is a lightweig...
In this diagram, we notice the JNDI architecture, which is connected to the Java application. The levels are clearly mentioned that the JNDI API is above the interface, and the interface is used to connect to a lot of directories. Some of the directory services are mentioned below. ...
One example of inner interface used in java standard library is java.util.Map and Java.util.Map.Entry. Here java.util.Map is used also as a namespace. Entry does not belong to the global scope, which means there are many other entities that are Entries and are not necessary Map's entr...
Java ME.Java's lightweight platform for mobile development andembedded devicedevelopment is known as Java Micro Edition, formerly known as J2ME. A visual of how a just-in-time (JIT) compiler works. Main uses of Java Java can be used to create complete applications that can run on a single...
JUnit is a unit testing open-source framework for Java. It helps in test-driven development and writing better codes. Learn JUnit features, working, and more.
JDK 8 includes Java DB 10.10. Networking The classjava.net.URLPermissionhas been added. In the classjava.net.HttpURLConnection, if a security manager is installed, calls that request to open a connection require permission. Concurrency Classes and interfaces have been added to thejava.util.concur...