包含标签：Java 的文章
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How do I run the 32-bit API on a 64 bit computer?
I'm writing a Java application that must communicate with it. It must communicate with XBee radio through USB cable To…… -
Java – when I need to be in optional Use optional. On orelse() When orelseget()
I need to make a clear explanation for this. Even if I am reading this link about differences, there is no clear defin…… -
Java – default expiration time of Google guava cache
I want to know the default expiration policy of guava cache Solution Suppose you're talking about cache builder From G…… -
What can be in the parentheses of a Java for loop?
My question is about Java for statements, such as for (int i = 0; i < 10; ++i) {/* stuff */} What I don't understan…… -
Java – uses the simulated location without setting it in the settings
I'm writing an application that takes advantage of the location simulation possibilities in Android What I want to ach…… -
What is the empty session path in Java – Tomcat?
I read the Apache Tomcat document the day before. I was confused about emptysessionpath As far as I know, if set to tr…… -
Java – JUnit test case for database insertion method using DAO and Web Services
I am implementing a university management system based on Web services The system adds some courses to the database He…… -
Project Euler #1 in Java
I encountered a problem with this code I don't want to see others, so I want to know what my fault is If we list all n…… -
If the string in LISP is a vector, why can’t I use svref to access the first element?
So, I'm trying to learn lisp. I have a problem defining what a string is I'm reading Paul Graham's ANSI Common Lisp. I…… -
Java – iterates the results in the list object returned by the hibernate query
I have hibernate query as follows: String MysqL = "SELECT S.col1,S.col2,T.col3,T.col4,T.col5 FROM myT…… -
Java – the GUI displays elements only after dragging the window
frame_ref = new Frame("Login"); frame_ref = new Frame("Login"); mainPanel_ref = new Panel(); buttonPan…… -
How to use comparable to compare common nodes in a linked list?
I'm using link lists to implement sort lists My node class looks like this public class Node<E>{ E elem; …… -
Java – Jersey 2.2: containerresponsefilter and containerrequestfilter will never be executed
After the getting started guide on the Jersey website: I executed the following build commands: $mvn archetype:generat…… -
Use Java 8 to calculate the number of days between two dates, while ignoring some days of the week
I have three methods below The first one is simple It only counts the total number of days However, the second not onl…… -
Java – use JSON Org parser parses JSON from httpclient request
I tried to parse JSON using notes proxy and get JSON using Apache httpclient This is the code that returns JSON import…… -
Java – possible cause of “StreamCorruptedException: invalid stream header”
I use drools to handle my pricing rules However, when I try to execute the rule, the following exception is thrown: ja…… -
Java – why use heaps instead of binary trees when implementing priority queues?
In my opinion, the only advantage of heap over binary tree is to find the smallest item in heap with O (1) rather than…… -
Difference between Java ‘assert’ and ‘if() {} else exit;’
What is the difference between Java assert and if () {} exit;? Can I use if () {} else to exit instead of asserting? S…… -
What is the difference between the gethost and getauthority methods in the URL class in Java?
I have a series of different forms of strings (URLs): > http：// domain name. anything / anypath > https：// dma…… -
Java – delete element from set
I'm trying to delete all strings of uniform length in a group So far, this is my code, but I can't get the index from …… -
Java – what is the difference between passing by reference and calling by reference?
What is the difference between calling by reference and calling by reference in a reference? Solution Java does not pa…… -
Java – what does it mean for deprecated methods and how to resolve the resulting errors?
Why do I have a deprecation error on the line containing setwallpaper (BMP), and how to solve it? switch(v.getId()){ …… -
Java – what is the best way to listen for changes in JTable cell values and update the database accordingly?
I am using multiple JTable builds and applications, and I need to detect when cell values change so that I can update …… -
Should I check the bytecode generated by the java compiler?
No, >The JIT compiler may "convert" bytecode to something completely different. > It will lead you to premature …… -
Java – access Tomcat context path from Servlet
In my servlet, I want to access the root of the context so that I can do some JavaScript scaling Minify can be done as…… -
Java – the easiest way to read Excel files in groovy?
Are there any warappers / utils that can be used to read Excel files in groovy I'm looking for something similar to gr…… -
How to learn from Jar load folder?
OK So I have a very simple question: I want to be able to start from the running Jar file, but I can't make it work Th…… -
Java prints an array of objects
I know there are many web pages about this problem, but I can't understand it in my case I need to print an array of o…… -
Java – play framework routing does not work
I just want to follow the zentasks tutorial of the play framework（ http://www.playframework.com/documentation/2.1.0/J…… -
java – com. sun. AWT package usage
I found a java code and wanted to use it in my project It contains these imports that my JDK does not have: import com…… -
Java – gets the height of the textview
I have some text to put in textview I did it with settext() Now I need to find the number of lines or height of text i……