The Executors class in Java provides factory and utility methods for the Executor, ExecutorService, ScheduledExecutorService, ThreadFactory, and Callable classes defined in the java.util.concurrent package. It helps in creating thread pools and managing asynchronous task execution. Java Executors Methods The table below contains various methods of the Java Executors class, each with a link to a …
The CompletableFuture class in Java provides a way to write asynchronous, non-blocking code. It is a powerful feature that is part of the java.util.concurrent package, enabling developers to handle long-running operations and return the result once the operation is complete. Java CompletableFuture Methods The table below contains various methods of the Java CompletableFuture class, each …
The Object class in Java is the root of the class hierarchy. Every class in Java inherits from the Object class, either directly or indirectly. This class provides several methods that are fundamental to the operation of objects in Java. Java Object Methods The table below contains various methods of the Java Object class, each …
The PriorityQueue class in Java provides a priority queue data structure where elements are ordered according to their natural ordering or by a comparator provided at queue construction time. This class offers several methods to manage the elements in the priority queue. Java PriorityQueue Methods The table below contains various methods of the Java PriorityQueue …
The Math class in Java provides methods for performing basic numeric operations such as elementary exponential, logarithm, square root, and trigonometric functions. This guide covers various methods available in the Math class. Each method is described in simple terms to help beginners understand how to use them. These methods enable complex mathematical calculations, making them …
The Thread class in Java provides methods to create and manage threads. Threads are a fundamental part of Java’s concurrency model, allowing multiple tasks to be executed in parallel within a single program. This guide covers various methods available in the Thread class. Each method is described in simple terms to help beginners understand how …
The System class in Java provides access to system resources and settings. It offers a variety of methods to perform system-level operations, such as reading environment variables, interacting with system properties, and managing input/output streams. This guide covers various methods available in the System class. Each method is described in simple terms to help beginners …
The Package class in Java provides information about a package, such as its name and the annotations associated with it. It allows you to get metadata about the package and check various properties of the package. This guide covers various methods available in the Package class. Each method is described in simple terms to help …
The StringBuilder class in Java is used to create mutable (modifiable) string objects. Unlike the String class, which is immutable, the StringBuilder class provides an array of methods that allow for the modification of strings without the need to create new string objects. This guide covers various methods available in the StringBuilder class. Each method …
The Byte class in Java is a wrapper class for the primitive type byte. It provides methods for converting a byte to a string and a string to a byte, as well as other constants and methods useful when dealing with a byte. Understanding these methods is crucial for efficient byte manipulation in Java. This …
The Short class in Java is a wrapper class for the primitive type short. It provides a variety of methods for converting a short to a string and a string to a short, as well as other constants and methods useful when dealing with a short. Understanding these methods is crucial for efficient short manipulation …
The Long class in Java is a wrapper class for the primitive type long. It provides a variety of methods for converting a long to a string and a string to a long, as well as other constants and methods useful when dealing with a long. Understanding these methods is crucial for efficient long manipulation …
The Double class in Java is a wrapper class for the primitive type double. It provides a variety of methods for converting a double to a string and a string to a double, as well as other constants and methods useful when dealing with a double. Understanding these methods is crucial for efficient double manipulation …
The Character class in Java wraps a value of the primitive type char in an object. This class provides numerous methods for determining the properties of a character, for converting characters from uppercase to lowercase and vice versa, and for converting characters to different formats. Understanding these methods is crucial for efficient character manipulation in …
The Boolean class in Java is a wrapper class for the primitive type boolean. It provides methods to convert a boolean value to a string and a string to a boolean value, as well as other constants and methods useful when dealing with boolean values. Understanding these methods is crucial for efficient boolean manipulation in …
The Integer class in Java is a wrapper class for the primitive type int. It provides a number of methods for converting an integer to a string and a string to an integer, as well as other constants and methods useful when dealing with an int. Understanding these methods is crucial for efficient integer manipulation …
The String class in Java is one of the most commonly used classes in the Java programming language. It represents a sequence of characters and provides a variety of methods to manipulate and handle strings. Understanding these methods is crucial for efficient string manipulation in Java. This guide covers various methods available in the String …
The ConcurrentHashMap class in Java is part of the Java Collections Framework and is a thread-safe variant of HashMap. It is designed for concurrent access and provides better performance in a multi-threaded environment. ConcurrentHashMap allows multiple threads to read and write without any conflicts, making it a valuable tool for high-performance applications. This guide covers …
The EnumMap class in Java is a specialized Map implementation designed for use with enum types. It is a high-performance Map implementation for use with enum keys, which makes it faster than other Map implementations. The EnumMap maintains all of the elements in a specific order (the natural order of the enum keys). This guide …
The TreeMap class in Java is a part of the Java Collections Framework and implements the NavigableMap interface. It is a Red-Black tree-based implementation that provides efficient means of sorting and maintaining key-value pairs in natural order. This makes it an excellent choice when sorted order of entries is required. This guide covers various methods …
The LinkedHashMap class in Java is a part of the Java Collections Framework and extends the HashMap class. It maintains a doubly-linked list running through all of its entries, which defines the iteration ordering. This ordered version of the HashMap allows predictable iteration order, which is determined by the order in which entries were inserted. …
The HashMap class in Java is a part of the Java Collections Framework and implements the Map interface. It is used for storing data in key-value pairs and provides an efficient way of retrieving values based on their keys. HashMap does not maintain any order of its entries, which makes it faster for many operations. …
The EnumSet class in Java is a specialized Set implementation designed for use with enum types. It is a part of the Java Collections Framework and provides a high-performance set implementation specifically for enums. EnumSet is much faster than other Set implementations, making it an excellent choice for use with enum constants. This guide covers …
The CopyOnWriteArraySet class in Java is a part of the Java Collections Framework and implements the Set interface. It is a thread-safe variant of HashSet where all mutative operations (add, set, remove, etc.) are implemented by making a fresh copy of the underlying array. This class is best suited for applications in which set sizes …
The LinkedHashSet class in Java is a part of the Java Collections Framework and implements the Set interface. It is a collection that maintains a linked list of the entries in the set, in the order in which they were inserted. This allows for predictable iteration order, which is not guaranteed by a regular HashSet. …