Linux is a powerful operating system with a vast array of commands that allow users to perform tasks with efficiency and precision. Remembering all these commands can be challenging, especially for beginners. This cheat sheet serves as a quick reference guide to help you recall commands and their syntax without having to search through extensive …
Introduction Maven is a powerful build automation tool used primarily for Java projects. It simplifies the build process, dependency management, and project configuration through the use of a standardized project object model (POM). Understanding the essential Maven commands can help you manage your project builds efficiently. This cheat sheet provides a quick reference to the …
Introduction Java Persistence API (JPA) with Hibernate implementation provides a standardized way to map Java objects to database tables, manage database transactions, and perform CRUD operations. Understanding the annotations provided by JPA and Hibernate can help you write more efficient, maintainable, and adaptable code. What is JPA? Java Persistence API (JPA) is a specification for …
Introduction This guide will provide a comprehensive cheat sheet for the most commonly used annotations in Spring and Spring Boot. What is Spring Framework? The Spring Framework is a comprehensive framework for building Java applications. It provides a wide range of functionalities, including dependency injection, transaction management, and aspect-oriented programming. Spring helps developers create high-performance, …
Welcome to our guide on the Java ZonedDateTime class methods! The ZonedDateTime class, part of the java.time package introduced in Java 8, is essential for representing date and time with a time-zone. This class provides a comprehensive way to handle date-time values in different time zones, making it crucial for applications that operate globally. Key …
The LocalDateTime class, part of the java.time package introduced in Java 8, is a versatile and essential tool for representing both date and time without any time-zone information. It combines the functionalities of LocalDate and LocalTime, allowing you to handle dates and times seamlessly in your Java applications. Key Points Immutable and Thread-Safe: LocalDateTime objects …
The LocalTime class in Java is designed to handle times without the complexities of dates and time zones. Whether you're scheduling events, setting alarms, or logging time-stamps, LocalTime provides a simple and effective way to manage time in your applications. Key Points Immutable and Thread-Safe: LocalTime objects are immutable, meaning once created, they cannot be …
The LocalDate class in Java, part of the java.time package introduced in Java 8, is designed for representing date-only values without time or time-zone information. It follows the ISO-8601 calendar system and is ideal for scenarios where only the date is needed, such as birthdays, anniversaries, and historical events. Here are the key features of …
The java.time.Instant class represents a moment on the timeline in UTC with nanosecond precision. Java Instant Methods The table below contains common methods of the Java Instant class, each with a link to a detailed explanation, examples, and real-world uses. Click on the method names to learn more about how to use them effectively in …
The java.time.Duration class models a quantity or amount of time in terms of seconds and nanoseconds. Java Duration Methods The table below contains various methods of the Java Duration class, each with a link to a detailed explanation, examples, and real-world uses. Click on the method names to learn more about how to use them …
The java.time.Clock class provides access to the current instant, date, and time using a time-zone. Java Clock Methods The table below contains common methods of the Java Clock class, each with a link to a detailed explanation, examples, and real-world uses. Click on the method names to learn more about how to use them effectively …
The DoubleStream interface in Java is a part of the Java Stream API, which allows for functional-style operations on streams of elements. Specifically, DoubleStream is used for sequences of primitive double values. This interface includes a variety of methods for performing calculations, filtering, and transforming data efficiently. This guide covers various methods available in the …
The LongStream interface in Java provides a sequence of long values that supports various operations to perform computations. It is part of the Java Stream API and offers functionalities for manipulating and processing sequences of long values in a declarative manner. This guide covers various methods available in the LongStream interface. Each method is described …
The java.util.stream.Stream interface provides a sequence of elements supporting sequential and parallel aggregate operations. Java Stream Methods The table below contains common methods of the Java Stream interface, each with a link to a detailed explanation, examples, and real-world uses. Click on the method names to learn more about how to use them effectively in …
The java.util.stream.IntStream interface provides a sequence of primitive int-valued elements supporting sequential and parallel aggregate operations. Here are some of the commonly used methods: Method Description allMatch() Returns whether all elements of this stream match the provided predicate. anyMatch() Returns whether any elements of this stream match the provided predicate. asDoubleStream() Returns a DoubleStream consisting …
The java.util.stream.Collectors class provides various useful reduction operations, such as accumulating elements into collections, summarizing elements according to various criteria, etc. Java Collectors Methods The table below contains common methods of the Java Collectors class, each with a link to a detailed explanation, examples, and real-world uses. Click on the method names to learn more …
The java.util.Stack class represents a last-in-first-out (LIFO) stack of objects. It extends the Vector class with five operations that allow a vector to be treated as a stack. Java Stack Class Methods The table below contains common methods of the Java Stack class, each with a link to a detailed explanation, examples, and real-world uses. …
The java.util.Scanner class provides methods to parse primitive types and strings using regular expressions. This class is often used to read input from various sources like strings, files, and input streams. The table below contains common methods of the Java Scanner class, each with a link to a detailed explanation, examples, and real-world uses. Click …
The java.util.Objects class consists of static utility methods for operating on objects. These methods include null-safe operations, comparisons, and more. Here are some common methods: Method Description checkIndex() Validates that an index is within the bounds of a range. equals() Returns true if the arguments are equal to each other and false otherwise. isNull() Returns …
The java.util.Currency class represents a currency. It provides methods to get currency information such as its code, display name, and numeric code. Java Currency Class Methods Here are some common methods: Method Description getAvailableCurrencies() Returns a set of all available currencies. getDisplayName() Returns the display name of the currency for the default locale. getCurrencyCode() Returns …
The Class class in Java, part of the java.lang package, represents classes and interfaces in a running Java application. It provides methods for examining the runtime properties of the class and creating new class instances, among other things. These methods are essential for reflection in Java. Java Class Methods The table below contains various methods …
The Enum class in Java, part of the java.lang package, represents a group of named constants. It provides several methods that are useful for working with these constants. Enums are used to define a set of named values, making your code more readable and maintainable. Java Enum Methods The table below contains various methods of …
The Throwable class in Java, part of the java.lang package, represents errors and exceptions that can be thrown during the execution of a Java program. This class is the superclass of all errors and exceptions in the Java language. Java Throwable Methods The table below contains various methods of the Java Throwable class, each with …
The StringTemplate class in Java, part of the java.lang package, provides a powerful way to handle template strings in Java. It allows you to create, manipulate, and format strings efficiently. Java StringTemplate Methods The table below contains various methods of the Java StringTemplate class, each with a link to a detailed explanation, examples, and real-world …
The ThreadGroup class in Java, part of the java.lang package, represents a group of threads. It provides methods for managing threads and thread groups as a single unit. This can be particularly useful for handling a collection of threads in a hierarchical manner. Java ThreadGroup Methods The table below contains various methods of the Java …