What is the role of java multithreading

1. Description

Multi-threading means that multiple threads are executed concurrently in a process, and each thread implements different functions.

2. Function

(1) In a single-core CPU, the CPU is divided into small time slices, and there can only be one thread at each moment. Execution is a microscopic mechanism that takes turns occupying the CPU. Because the CPU polling speed is very fast, it looks like it is executing "at the same time". Multi-threading will cause thread context switching, which will cause the program execution speed to slow down;

(2) Multi-threading will not increase the execution speed of the program, but will reduce it. But for users, it can reduce the user's waiting response time and improve resource utilization efficiency.

(3) Multi-thread concurrency takes advantage of the characteristics of CPU polling time slices. When one thread enters the blocked state, it can quickly switch to other threads to perform other operations, which is beneficial to improving resource utilization and limiting The use of the processing power provided by the system effectively reduces the user's waiting response time.

What are the basic data types of java

The basic data types of Java are divided into:

1. Integer type, used to represent the data type of integer.

2. Floating point type, a data type used to represent decimals.

3. Character type. The keyword of character type is "char".

4. Boolean type is the basic data type that represents logical values.

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