Java
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On the differences among set, list and map in Java
http://developer.51cto.com/art/201309/410205_all.htm -
Export selected behavior excle
What you want to achieve is to export the selected row. For example, check these two items Export as My front desk is …… -
The difference between super() and this()
1) The call to super () must be written in the first line of the subclass construction method, otherwise the compilati…… -
Java learning roadmap (how to learn java quickly)
Unknowingly, it has been 8 years since I first learned Java. Today I'm here to give some suggestions to my friends…… -
A memory leak analysis of Java
Current environment Code address Git address: background Online troubleshooting First, we need to check on the server.…… -
The difference between Preparedstatement and statement
The difference between Preparedstatement and statement 1. Preparedstatement is precompiled, which can greatly improve …… -
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Paging implementation method
Method 1: the definition of foreground page displays easy UI in pages Every time a page operation or query requests cu…… -
Generics in Java
< H1 id = "what is a wildcard" > what is a wildcard It refers to object and its subclasses, that is, all Java ob…… -
How to build high performance mysql index
< p id = "_1" > this article focuses on how to build a high-performance MySQL index, from which you can learn ho…… -
The problem of date () class converting date to string and string to date in Java
The problem of date () class converting date to string and string to date in Java -
Three ways and differences of creating threads in Java
In Java, there are three methods to create threads: 1. Inherit thread class If you inherit the thread class, you must …… -
What is the difference between string, StringBuilder and StringBuffer?
It is estimated that many java beginners will encounter this problem in the process of learning Java, that is, what is…… -
Java basic 01 variables, comments and data types
1.4 common notes / / single line comments, from / / to the end of the line. /**Start and end with * /. 2. Data type 2.…… -
Singleton mode of Java multithreaded programming
Deferred loading means that an instance is created when the getInstance () method is called. A common method is to ins…… -
Quick sorting of sorting algorithm
< H1 id = "Introduction to algorithm" > I. Introduction to algorithm Quick sort: the basic idea of quick sort is…… -
Talk about Java Memory Model
1、 Java Memory Model Hardware processing Computer hardware, we know that there are CPU for calculation, memory for au…… -
No java code is required to generate microservice applications with security verification through jhipster
< p class = "indent" > let's continue logging in to our application and navigate to the account > login menu …… -
javaSystem. out. Println() output byte [] and char [] exceptions
@H_ 301_ 0@javaSystem.out.println () abnormal output of byte [] and char [] Today, someone suddenly asked me that he w…… -
What’s the difference between int and integer?
Java is an almost pure object-oriented programming language, but basic data types are introduced for programming c…… -
Five ways to create objects in Java
We always talk about creating a new object without an object. The method of creating an object has become a deep-roote…… -
Dynamic graph demonstration of top 10 classic sorting algorithms. It’s enough to read this article! (with corresponding code)
Sorting algorithm is one of the most basic algorithms in data structure and algorithm. Sorting algorithms can be divid…… -
Comprehensive summary of Java generic knowledge points
preface I have always believed that generics is a very basic and important concept in programming language design. Wha…… -
May you go out of your life and return to Java parser
A few days ago, a friend of mine gave me a Haskell question This question is interesting and not difficult. This probl…… -
What are the good designs of the service framework as a java web framework
preface Recently, I need to develop a pure api project. From scratch to the completion of the development of the compl…… -
Deep understanding of class objects and reflection mechanism in Java Foundation
There are three main ways to obtain class objects: @ h_ 502_ 4 @ get the class. Forname method through the instance ge…… -
Thoroughly understand the basis of Java concurrency (I)
Multithreaded programming is to make the program run faster, but it does not mean that the more threads are created, t…… -
Java basic 03 operator branch structure loop structure
1.2 shift operator < < represents the shift left operator, which is used to move the binary bit of the variable …… -
This time, let you thoroughly understand interfaces and abstract classes
The purpose of this article is to discuss the role, examples and usage scenarios of abstract classes and interfaces, w…… -
Usage Summary of synchronized keyword
< div class = "CL preview section" > < p id = "synchronized" three application methods "> synchronized key…… -
Redis interview questions and answers
1. What is redis? Describe its advantages and disadvantages? The full name of redis is remote dictionary Server is ess…… -
Deep understanding of Java object
The object object in Java is the direct or indirect parent object of all objects. Several methods defined in it are ea……