What are the contents of java core technology?

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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