Tutorial by Examples: java

jQuery.ajax({ url: 'https://api.dropboxapi.com/2/users/get_current_account', type: 'POST', headers: { "Authorization": "Bearer <ACCESS_TOKEN>" }, success: function (data) { console.log(data); }, error: function (error) { ...

Many IDEs provide support for generating HTML from Javadocs automatically; some build tools (Maven and Gradle, for example) also have plugins that can handle the HTML creation. However, these tools are not required to generate the Javadoc HTML; this can be done using the command line javadoc tool. ...

Functional Interfaces Lambdas can only operate on a functional interface, which is an interface with just one abstract method. Functional interfaces can have any number of default or static methods. (For this reason, they are sometimes referred to as Single Abstract Method Interfaces, or SAM Interf...

Synchronous <script src="path/to.js"></script> Standard practice is to place JavaScript <script> tags just before the closing </body> tag. Loading your scripts last allows your site's visuals to show up more quickly and discourages your JavaScript from trying to...

This uses the Dropbox Java SDK to create a shared link for a file at the Dropbox path /test.txt: try { SharedLinkMetadata sharedLinkMetadata = client.sharing().createSharedLinkWithSettings("/test.txt"); System.out.println(sharedLinkMetadata.getUrl()); } catch (CreateSharedLinkW...

The following will log the JSON response from the API to the console if the request was successful, otherwise it will log the error. var xhr = new XMLHttpRequest(); xhr.open('GET', 'https://api.twitch.tv/kraken', true); xhr.setRequestHeader('Client-ID', '...'); xhr.onload = function(...

What is Serialization Serialization is the process of converting an object's state (including its references) to a sequence of bytes, as well as the process of rebuilding those bytes into a live object at some future time. Serialization is used when you want to persist the object. It is also used b...

All Java exceptions are instances of classes in the Exception class hierarchy. This can be represented as follows: java.lang.Throwable - This is the base class for all exception classes. Its methods and constructors implement a range of functionality common to all exceptions. java.lang.Excep...

Overview In order to debug Java classes that are called during MATLAB execution, it is necessary to perform two steps: Run MATLAB in JVM debugging mode. Attach a Java debugger to the MATLAB process. When MATLAB is started in JVM debugging mode, the following message appears in the command wi...

./mongo localhost:27017/mydb myjsfile.js Explanation: This operation executes the myjsfile.js script in a mongo shell that connects to the mydb database on the mongod instance accessible via the localhost interface on port 27017. localhost:27017 is not mandatory as this is the default port mongo...

Date and LocalDate objects cannot be exactly converted between each other since a Date object represents both a specific day and time, while a LocalDate object does not contain time or timezone information. However, it can be useful to convert between the two if you only care about the actual date i...

Assumptions: An Oracle JDK has been installed. The JDK was installed to the default directory. Setup steps Open Windows Explorer. In the navigation pane on the left right click on This PC (or Computer for older Windows versions). There is a shorter way without using the explorer in...

A factory decreases coupling between code that needs to create objects from object creation code. Object creation is not made explicitly by calling a class constructor but by calling some function that creates the object on behalf the caller. A simple Java example is the following one: interface Ca...

public class Dog extends RealmObject { public String name; public int age; } Dog dog = new Dog(); dog.name = "Rex"; dog.age = 1; Realm realm = Realm.getDefaultInstance(); realm.executeTransaction(new Realm.Transaction() { @Override public void execute(Realm re...

@Provider public class CORSResponseFilter implements ContainerResponseFilter { public void filter( ContainerRequestContext requestContext, ContainerResponseContext responseContext ) throws IOException { MultivaluedMap<String, Object> headers = responseCo...

The core concepts of RxJava are its Observables and Subscribers. An Observable emits objects, while a Subscriber consumes them. Observable Observable is a class that implements the reactive design pattern. These Observables provide methods that allow consumers to subscribe to event changes. The ev...

Prerequisites Installation

Carousel components can be instantiated via jQuery with the function $('.carousel').carousel(options), where $('.carousel') is a top-level reference to the specific carousel and options is a Javascript object specifying the carousel's default attributes. The options object allows for multiple prope...

First, add relevant dependencies into the build.gradle file. dependencies { .... compile 'com.squareup.retrofit2:retrofit:2.3.0' compile 'com.squareup.retrofit2:converter-gson:2.3.0' compile 'com.squareup.retrofit2:adapter-rxjava:2.3.0' .... } Then create the model you ...

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