Java core technologies include: 1. C-based object-oriented syntax and data types; 2. Object-centered programming, including classes, inheritance and polymorphism; 3. For storing and operating data Collection framework; 4. Exception handling mechanism for handling errors; 5. I/O classes for reading and writing data; 6. Supporting concurrency functions for multi-threaded programming; 7. Provide type safety, bounds checking and permissions Control security features; 8. Network programming API for connecting and communicating over the network.
Java core technology
Java is a powerful object-oriented programming language that is widely used to develop various app. Its core technologies include:
Syntax and data types
- Java syntax is based on C and has object-oriented characteristics.
- It supports multiple data types, including basic types (such as int, float) and reference types (such as objects, arrays).
Object-oriented programming
- Java is a language designed with object-centered design in mind.
- It supports the concepts of classes, objects, inheritance, polymorphism and encapsulation.
Collection Framework
- Java Collection Framework provides a set of interfaces and classes for storing and manipulating data.
- It includes data structures such as lists, sets, maps and queues.
Exception handling
- Java provides an exception handling mechanism to handle errors that occur during program execution.
- It uses try-catch blocks to catch exceptions and perform appropriate handling.
Input/Output (I/O)
- Java provides a rich set of I/O classes for reading and writing files , console and network.
- It supports concepts such as streams, buffers and serialization.
Concurrent programming
- Java supports multi-threaded programming, allowing multiple threads to perform tasks at the same time.
- It provides a series of concurrency classes, such as threads, locks and synchronizers.
Safety
- Java is a safe programming language that provides a variety of safety features, including type safety, array bounds checking, and Permission control.
Network Programming
- Java provides a powerful network programming API for connecting and communicating over a network.
- It supports TCP/IP sockets, HTTP client/server and web services.
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