Java
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Graphic tutorial on JDK download, installation and deployment
Although this is very simple for many people, I still want to write it. I hope it can help the latecomers who still ne…… -
How much memory can Java objects occupy?
Recently, I read in-depth understanding of Java virtual machine and had a further understanding of the memory layout o…… -
Summary of java development novice problems
Java is one of the most popular programming languages & mdash& mdash; It can be used to write windows programs…… -
Summary of 20 interview questions for Java advanced developers
This is the first part of an advanced Java interview series. This part discusses the core issues of Java, such as vari…… -
Several configuration methods of Java database connection pool (taking MySQL database as an example)
I Tomcat configuration data source: Premise: you need to put the jar package connecting the MySQL database driver into…… -
Deep understanding of Java interfaces and abstract classes
Abstract is one of the characteristics of object-oriented programming. In Java, OOP abstraction can be embodied in two…… -
25 learning points for becoming a Java master
Want to be a Java bull? Here are 25 points for learners. 1. You need to be proficient in object-oriented analysis …… -
Performance optimization summary of 35 java development codes
Foreword Code optimization is a very important topic. Some people may think it's useless. What can be changed in some …… -
String. In Java Summary of split() usage
In Java Lang package contains string The split () method returns an array I use some in the application to summarize f…… -
Eclipse tips
I'm used to developing Java programs in eclipse. The company's recent projects are all developed by idea. Meanwhile, A…… -
Explain in detail the usage of inheriting classes using externds keyword in Java
Understanding inheritance is the key to understanding object-oriented programming. In Java, an existing class is inher…… -
Java implements a simple chat room program based on UDP protocol
I've been relatively idle recently. I've been taking the time to review some technical applications in Java. Nothing t…… -
Overloading and rewriting instance code of Java functions
In Java, polymorphism can be divided into two types: compile time polymorphism (overloading) and run-time polymorphism…… -
10 ways to get JAVA done in a few weeks
Don't confuse java with JavaScript. The goal of Java is & ldquo; Compile once and debug everywhere & rdquo; (E…… -
ASP. NET MVC4+EF5+EasyUI+Unity2. Front end page framework construction and source code sharing of background management system injected by X
At the beginning, we have a series of solutions. Let's start to build a new system. The user experience needs more and…… -
Wechat randomly generated red envelope amount algorithm java version
The craziest thing to play in recent years should be sending red envelopes, especially during the new year. The follow…… -
Java program implements the method of exporting excel (supports ie low version)
Today, I want to sort out an export problem I encountered some time ago. Because of the requirements of the project, s…… -
Java 8 method of reading files
JDK7 introduces a new file operation class java nio. file. File, which contains many useful methods to manipulate file…… -
Architects take you to a deeper understanding of Java interfaces and abstract classes
Abstract is one of the characteristics of object-oriented programming. In Java, OOP abstraction can be embodied in two…… -
Explain JavaScript from the perspective of Java developers
We can't explain all the details of JavaScript in a blog post. If you are more or less involved in web application dev…… -
JavaWeb export excel file and pop up the download box
1、 Introduction Reports are often involved in Java Web development. In recent projects, it is necessary to display th…… -
How much memory does a Java object occupy?
Recently, I read in-depth understanding of Java virtual machine and had a further understanding of the memory layout o…… -
8 common sorting of Java
6. Quick sort 8 sorting that programmers must know (Java implementation) Relationships among 8 sorts: 1. Direct insert…… -
Java JDBC connects to MySQL database to realize the operation of addition, deletion, modification and query
JDBC is no stranger to us. As long as you are engaged in Java, you have to learn such a thing when you first contact J…… -
Summary of Java idioms
In Java programming, some knowledge can not be learned only through language specifications or standard API documents.…… -
Correctly handle null observable in rxjava
I have a situation where I'm creating an observable that contains database results I'm applying a series of filters to…… -
How to use “if else” in Rx Java chain?
I'm new to RX Java / RX Android I want to implement this case: choose different methods according to some conditions i…… -
Java – why is “010” equal to 8?
My simple question is why: System.out.println(010|4); Print "12"? I understand the bitwise OR operator, but why is "01…… -
RX Java – the process on the background thread is observable
I'm using RX Android for streaming In my real use case, I get a list from the server (using retrofit) I'm using the sc…… -
Java – simulate rest calls using mockrestserviceserver
I am trying to write a JUnit test case to test the methods in the auxiliary class This method uses rest to call extern…… -
Java — debug a maven program from Eclipse
I have a project in eclipse that has the following package structure after assembly launcher.tar.gz |-- launcher.jar …… -
Java – “iteratable cannot be converted to list” – is not an “iteratable” of type “list”?
I called a getelements method that returns iteratable < element > I do this: List<Element> elements = (Lis……