Huong Dan Java - Page 76 of 84 - Java development tutorials

Method takeWhile() of Stream object in Java

This method was added from Java 9.

default Stream<T> takeWhile(Predicate<? super T> predicate)

1	default Stream<T> takeWhile(Predicate<? super T> predicate)

The parameter of this method is the Predicate interface and this method takes the elements in your Stream object from left to right, until the condition of the Predicate object is no longer fulfilled. Example:

package com.huongdanjava.javastream;

import java.util.stream.Stream;

public class Example {

	public static void main(String[] args) {
		Stream.of(1,2,3,4,5,6,7,8,9,10)
			.takeWhile(i -> i < 5)
			.forEach(System.out::println);
	}
}

package com.huongdanjava.javastream;

import java.util.stream.Stream;

public class Example {

public static void main(String[] args) {

Stream.of(1,2,3,4,5,6,7,8,9,10)

.takeWhile(i -> i < 5)

.forEach(System.out::println);

}

In… Read More

Multithreading with Callable and Future in Java

9 years ago by Khanh NguyenJava Basic

Multithreading is the notion of handling program actions that do not take place in the program’s main Thread, which is handled by many different Threads. This concept will make the processing of the program faster. We have many ways to implement multithreading in Java, but… Read More

Reactive Streams in Java

9 years ago by Khanh NguyenJava Basic

Reactive Streams are a concept that defines the mechanism for handling streams asynchronously with non-blocking back pressure. Back pressure here, we can understand that there is too much work to do at the same time, then it should lead to overload. Non-blocking back pressure means… Read More

Create Connector using Devkit in Anypoint Studio

9 years ago by Khanh NguyenMule ESB

In the previous tutorial, I showed you how to create a new Anypoint Connector Project to start creating a new custom Connector and use it in your Mule application. In this tutorial, I will go into details how to create Connector using Devkit in Anypoint… Read More

Introduce about JShell in Java

9 years ago by Khanh NguyenJava Basic

If you have ever worked with some languages like Python, Scala, you may know we can write code and execute code for those languages using only the command line. This will allow us to test some code without having to do a lot of things,… Read More

Install Anypoint Devkit Plugin in Anypoint Studio

9 years ago by Khanh NguyenMule ESB

Anypoint Devkit Plugin is not installed with Anypoint Studio by default. So, if you want to create a new Connector for using in your Mule application, the first thing we need to do: install Anypoint Devkit Plugin for Anypoint Studio. In this tutorial, I will… Read More

Introduction about Optional object in Java

9 years ago by Khanh NguyenJava Basic

In the previous tutorial about NullPointerException in Java, I have presented to you some cases where NPE can occur and how to deal with them to avoid. From Java 8, we have another way to avoid NullPointerException, that will use the Optional object. What is… Read More

Initialize Immutable Collections in Java

9 years ago by Khanh NguyenJava Basic

Immutable Collection likes an Immutable Object, once created, we can not edit anything on that Object or Collection. From Java 8 and earlier, to initialize an Immutable Collection like List, Set, or Map, we will use the unmodifiableXXX() methods in the java.util.Collections class. For example,… Read More

Create new Anypoint Connector Project using Anypoint Studio

9 years ago by Khanh NguyenMule ESB

DevKit is an important tool of the MuleSoft Anypoint Platform, allowing us develop new components, connectors beside the default components providing by Mule ESB. In this tutorial, I will guide you all how to create Anypoint Connector Project in Anypoint Studio to start developing a… Read More

Basic about Jakarta EE RESTful Web Services

9 years ago by Khanh NguyenJakarta EE RESTful Web Services

Jakarta EE RESTful Web Services define the required specification of a RESTful Web Service in Java. Make it possible for us to implement RESTful Web Services applications with Java. In this tutorial, I will introduce the basics of Jakarta EE RESTful Web Services that you… Read More