包含标签:Java 的文章
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Note: Lecture 8 Java network programming
Think before class 1 What is TCP / IP protocol? 2. What are the two transmission protocols of TCP / IP and what ar…… -
Feel the characteristics of Java data object JDO 2.0 query language (3)
The query feature extended by manufacturers JDO manufacturers can provide jdoql with a variety of special query functi…… -
JSP from simple to deep (12) — form editing
For example, the flag library from the blazix server cannot be used in your system environment, so what about not usin…… -
Several problems easily confused by java beginners
1. String class and StringBuffer class are both classes that handle strings, but they have one biggest difference,…… -
JSP from simple to deep (6) — JSP declaration
Now the JSP you write will become a class definition. All the scriptlets you write should be placed in a method of thi…… -
Establishment of Tomcat environment
Tomcat is another excellent JSP server developed on the basis of sun's jswdk. It not only supports servlet, but also p…… -
JSP from shallow to deep (9) — JSP sessions
On a classic website, visitors can browse several web pages and perform some interactive behavior. If you are writing …… -
Note: Lecture 7 swing user interface design
[thinking before class] 1. What is swing? What are its advantages over AWT? What are the differences in use? 2. What a…… -
JSP from shallow to deep (11) — tag library
JSP 1.1 proposes a method of extending JSP flag, which is named "flag library". These libraries allow additional flags…… -
Feel the characteristics of Java data object JDO 2.0 query language (1)
The improvement of query language is jdo2 0 specification. This paper expounds jdo2 from a higher level Some new featu…… -
JSP from shallow to deep (8) — JSP Tags
Another important syntax of JSP is tags. JSP tags does not use <%, but only the < character. JSP tag is a bit li…… -
Note: Lecture 4 exception handling and I / O flow in Java
[thinking before class] 1. What are exceptions? What are the two exception handling mechanisms in Java? 2. What are th…… -
Note: Lecture 3 object oriented features in the Java language
[thinking before class] 1. What are objects? What are classes? What are packages? What are interfaces? What are intern…… -
Note: Lecture 6 Java threads and Java applets
[thinking before class] 1. What is a thread? What is the difference between it and a process? What is the applicable d…… -
Wildcards T, e, K, V,? Winter anthracene
In essence, these are wildcards, no difference, but a conventional thing in coding. For example, we can replace t in t…… -
Prevent pages from being embedded in iframe
if (window != top){ top.location.href = location.href; } -
Under tomcat, select context Configuring various database connection pools (JNDI) in XML
Tomcat6的服务器配置文件放在 ${tomcat6}/conf 目录底下。我们可以在这里找到 server.xml 和 context.xml。当然,还有其他一…… -
There are two ways for HashMap traversal. Entryset() is recommended
Map map = new HashMap(); Iterator iter = map.entrySet().iterator(); while (iter.hasNext()) { Map.Entry entry…… -
Java – get the last three elements from list / ArrayList?
I need to add the last three elements to the list Is there any practical way, or do I just use a for loop that iterate…… -
How do I find the declared identifier type in Java?
I have a simple class Apple extended from another simple class fruit At runtime, I can use Fruit fruit = new Apple(); …… -
Compare Java time. An instance of zoneddatetime, ignoring the seconds and milliseconds compared in Java 8
I'm looking for an equivalent method of joda time in Java 8. Compare org joda. time. An instance of datetime (specify …… -
Reverse string with word in Java
I have the following code to reverse the string word by word, but I have a question. First, can someone point out how …… -
Java – specify the variable name in the query where clause in JDBC
Someone can give me a link about how to create a query in JDBC. The query obtains the variable name in the where state…… -
How to make ‘map:: get’ return ‘optional’ or ‘optional’ of the found value empty()`
I'm trying to do this: return Optional.of(myMap.getOrDefault(myKey,null)); Really, what I want is to return optional i…… -
Concurrency – implement parallel execution in scheme
In SiCp Section 3.4 (serializer in scheme) on currency, there is a process called parallel execution, which is describ…… -
What are the differences / similarities between hazelcast (Java) and etcd (golang)?
Now we build a real-time analysis system, which should be highly distributed We plan to use distributed locks and coun…… -
Java – an external file of strings, not hard coded
I have experience developing Android applications that can easily store strings using XML string files The last time I…… -
The pre allocated private STD:: vector in OpenMP is parallelized into a loop in C
I'm going to use the buffer STD:: vector < size_ t> Buffer (100), one in each thread of loop parallelization, as…… -
Java – log the device into a file
How do I redirect log records on my device to a file? My application hangs on the device, but works well on the simula…… -
Access volatile variables that cannot be accessed from outside the observable behavior of functions in the C language?
In C 03, the standard observable behavior (1.9 / 6) includes reading and writing volatile data Now I have this Code: i…… -
Java – how to install / configure xuggle to get unsatisfiedlinkerror?
I've just started using xuggle. I've downloaded everything to eclipse and included it in referenced libraries, but I d…… -
Gets a list of all Java reserved keywords
I'm looking for a way to retrieve all the keywords saved in Java into a data structure For example: "for, while, if, e……