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What are the seven major components of Spring Cloud?

Seven major components of Spring Cloud: 1. Eureka component, which describes how the service is registered and where to register it; 2. Ribbon component; 3. Feign component, a declaration web service client; 4. Hystrix component; 5. Config component; 6 , Zuul component; 7. Bus component.

Apr 25, 2021 pm 05:43 PM

java spring boot spring cloud

How to create objects in java

Methods for creating objects in Java: 1. Use the new keyword; 2. Use the newInstance method of the Class class, which can call the constructor without parameters to create objects; 3. Use the newInstance method of the Constructor class; 4. Use the clone method; 5. Use Deserialize.

Apr 25, 2021 pm 02:44 PM

java Create object

What are the methods to convert string to date in java

Conversion method: 1. Use SimpleDateFormat to format the time; 2. Use "org.apache.commons.lang3.time.DateUtils" to format the time; 3. Use DateTimeFormatter to format the time.

Apr 23, 2021 pm 05:58 PM

date java string

What is the use of split() method in java

In Java, the split() method can split a string based on matching a given regular expression, and then return a string array, the syntax is "stringObject.split(regular expression delimiter, number of splits)"; if There are multiple delimiters, you can use "|" as a hyphen.

Apr 22, 2021 pm 05:20 PM

java split()

What are the three major systems of java?

JAVA has three major systems, namely: 1. Java SE, including Java basic class libraries and syntax; 2. Java EE, based on Java SE, defines a series of services, APIs, protocols, etc., and adds the ability to write enterprise-level Application class library; 3. Java ME.

Mar 25, 2021 pm 04:19 PM

java

What is the difference between java and c++

Difference: Java cannot use a non-Boolean value as a Boolean value in a logical expression, but C++ can. C++ introduces an operator overloading mechanism, which Java does not support. C++ has goto, Java does not have goto. There is multiple inheritance in C++ and only single inheritance in Java, but Java can implement multiple inheritance through interfaces.

Mar 24, 2021 pm 03:25 PM

c++ java

What are the five commonly used design patterns in Java?

Five commonly used design patterns in Java: 1. Singleton design pattern; 2. Factory design pattern; 3. Agent design pattern; 4. Observer design pattern; 5. Adapter pattern.

Mar 24, 2021 am 11:24 AM

java Design Patterns

What are the commonly used Java code snippets?

Commonly used Java code segments include: 1. Convert strings to integers; 2. Add content to the end of the file; 3. Get the name of the current method; 4. Convert strings to dates; 5. Use JDBC to connect to Oracle.

Mar 17, 2021 pm 02:22 PM

Sorting of Java Basics TreeSet and Java Custom Types

The bottom layer of the TreeMap collection is actually a TreeMap. The bottom layer of the TreeMap collection is a binary tree. The elements placed in the TreeSet collection are equivalent to being placed in the key part of the TreeMap collection. The java basic tutorial column will introduce it in detail. Friends in need can take a look.

Mar 05, 2021 am 09:54 AM

java treeset customize

Java zero-based detailed explanation of multi-threading

??????Daemon threads can be divided into thread classification: user threads (the above are all user threads), and the other is daemon threads. The daemon thread is like this. When all user threads end their life cycle, the daemon thread will end its life cycle. As long as there is one user thread, the daemon thread will not end. For example, the famous garbage collector in Java is a daemon thread. It will not end until all threads in the application end.

Mar 04, 2021 am 10:20 AM

java Multithreading

Java explains ThreadPool thread pool

Similar to the database thread pool, if there is no database connection pool, then new is required every time the database connection pool is used to obtain the connection pool. Repeated connection and release operations will consume a lot of system resources. We can use the database connection pool and directly get the connection pool from the pool.

Mar 03, 2021 am 10:36 AM

java

Java implementation of singly linked list (Linked List) related

A singly linked list is an ordered list that stores information in the form of nodes, but the nodes are not necessarily consecutive. Each node includes a data field and a next field. The basic Java tutorial column will be introduced in detail in this article, friends in need can take a look.

Mar 01, 2021 am 09:47 AM

java Single list

How to define an array in java

How to define an array in java: 1. Use [String[] s=new String[]] to define a string array; 2. Use [int[] i=new int[]] to define an integer array; 3. Use [String[ ] str2={"a","b","c"}] to define the array.

Feb 26, 2021 pm 02:36 PM

java define array

Java introduces obtaining class information through reflection

In the previous section, we introduced the details of the reflection mechanism. In this section, we will introduce the acquisition of class attributes, methods and other information through reflection. Friends in need can take a look together.

Feb 26, 2021 am 10:36 AM

java