In this Spring Security tutorial, we will learn how to configure Spring Security to use in-memory authentication. In-memory authentication is a simple and efficient way to manage user authentication for small applications or for development and testing purposes. It involves storing user credentials directly in the application’s memory rather than in an external database. This …
Introduction In this tutorial, we will implement token-based authentication using Spring Boot, Spring Security, JWT (JSON Web Token), and MySQL database. This approach provides a secure and efficient way to handle user authentication in your Spring Boot applications. JWT (JSON Web Token) Overview What is JWT? JWT stands for JSON Web Token, an open standard …
In this comprehensive tutorial, we’ll create a full-stack CRUD Todo application using Java, Spring Boot, JavaScript, React JS, and a MySQL database. This guide will walk you through building the backend REST APIs with Spring Boot and the frontend React application to consume these APIs. Create a Spring Boot Project Using Spring Initializr First, create …
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The sendAsync() method in Java is an abstract method provided by the java.net.http.HttpClient class. It sends an HTTP request asynchronously using the specified response body handler and returns a CompletableFuture of the response. This allows you to perform non-blocking HTTP communication, where the request and response handling can occur concurrently with other tasks.
The send() method in Java is an abstract method provided by the java.net.http.HttpClient class. It is used to send a given HttpRequest and receive an HttpResponse. This method blocks the calling thread until the response is available, making it suitable for synchronous HTTP communication.
The newHttpClient() method in Java is a factory method in the java.net.http.HttpClient class that creates a new HttpClient instance with default settings. The HttpClient class was introduced in Java 11 as part of the Java HTTP Client API, which provides an efficient and flexible way to send HTTP requests and receive responses.
The unmodifiableSet() method in Java is a utility method provided by the java.util.Collections class. It returns an unmodifiable view of the specified set, meaning that any attempts to modify the set through this view will result in an UnsupportedOperationException. This method is useful when you need to provide a read-only view of a set, ensuring …
The unmodifiableSequencedSet() method in Java is a utility method provided by the java.util.Collections class. It returns an unmodifiable view of the specified SequencedSet, meaning that any attempts to modify the set through this view will result in an UnsupportedOperationException. This method is useful when you need to provide a read-only view of a sequenced set, …
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The unmodifiableSequencedMap() method in Java is a utility method provided by the java.util.Collections class. It returns an unmodifiable view of the specified SequencedMap, meaning that any attempts to modify the map through this view will result in an UnsupportedOperationException. This method is useful when you need to provide a read-only view of a sequenced map, …
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The unmodifiableSequencedCollection() method in Java is a utility method provided by the java.util.Collections class. It returns an unmodifiable view of the specified SequencedCollection, meaning that any attempts to modify the collection through this view will result in an UnsupportedOperationException. This method is useful when you need to provide a read-only view of a sequenced collection, …
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The unmodifiableNavigableSet() method in Java is a utility method provided by the java.util.Collections class. It returns an unmodifiable view of the specified navigable set, meaning that any attempts to modify the set through this view will result in an UnsupportedOperationException. This method is useful when you need to provide a read-only view of a navigable …
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The unmodifiableNavigableMap() method in Java is a utility method provided by the java.util.Collections class. It returns an unmodifiable view of the specified navigable map, meaning that any attempts to modify the map through this view will result in an UnsupportedOperationException. This method is useful when you need to provide a read-only view of a navigable …
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The unmodifiableMap() method in Java is a utility method provided by the java.util.Collections class. It returns an unmodifiable view of the specified map, meaning that any attempts to modify the map through this view will result in an UnsupportedOperationException. This method is useful when you need to provide a read-only view of a map, ensuring …
The unmodifiableList() method in Java is a utility method provided by the java.util.Collections class. It returns an unmodifiable view of the specified list, meaning that any attempts to modify the list through this view will result in an UnsupportedOperationException. This method is useful when you need to provide a read-only view of a list, ensuring …
The unmodifiableCollection() method in Java is a utility method provided by the java.util.Collections class. It returns an unmodifiable view of the specified collection, meaning that any attempts to modify the collection through this view will result in an UnsupportedOperationException. This method is useful when you need to provide a read-only view of a collection, ensuring …
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The synchronizedSortedSet() method in Java is a utility method provided by the java.util.Collections class. It returns a synchronized (thread-safe) sorted set backed by the specified sorted set. This method is particularly useful when you need to ensure that a sorted set is thread-safe in a concurrent environment.
The synchronizedSortedMap() method in Java is a utility method provided by the java.util.Collections class. It returns a synchronized (thread-safe) sorted map backed by the specified sorted map. This method is particularly useful when you need to ensure that a sorted map is thread-safe in a concurrent environment.
The synchronizedSet() method in Java is a utility method provided by the java.util.Collections class. It returns a synchronized (thread-safe) set backed by the specified set. This method is particularly useful when you need to ensure that a set is thread-safe in a concurrent environment.
The synchronizedNavigableSet() method in Java is a utility method provided by the java.util.Collections class. It returns a synchronized (thread-safe) navigable set backed by the specified navigable set. This method is particularly useful when you need to ensure that a navigable set is thread-safe in a concurrent environment.
The synchronizedMap() method in Java is a utility method provided by the java.util.Collections class. It returns a synchronized (thread-safe) map backed by the specified map. This method is useful when you need to ensure that a map is thread-safe in a concurrent environment.
The synchronizedList() method in Java is a utility method provided by the java.util.Collections class. It returns a synchronized (thread-safe) list backed by the specified list. This method is useful when you need to ensure that a list is thread-safe in a concurrent environment.
The synchronizedCollection() method in Java is a utility method provided by the java.util.Collections class. It returns a synchronized (thread-safe) collection backed by the specified collection. This method is useful when you need to ensure that a collection is thread-safe in a concurrent environment.
The swap() method in Java is a utility method provided by the java.util.Collections class. It is used to swap the elements at two specified positions in a given list. This method is useful when you need to rearrange elements within a list, such as during sorting algorithms or when implementing custom data manipulation logic.
The singletonMap() method in Java is a utility method provided by the java.util.Collections class. It returns an immutable map containing a single key-value mapping. This method is useful when you need to create a map with exactly one entry, providing a convenient and efficient way to represent simple mappings in your application.
The singletonList() method in Java is a utility method provided by the java.util.Collections class. It returns an immutable list containing only a specified object. This method is useful when you need to create a list with exactly one element, providing a convenient and efficient way to represent single-element lists in your application.