Recent Posts
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Solution to the problem of Chinese garbled code in Java compressed zip file
Usually, after using java to package files to generate compressed files, there are two places where there will be garb…… -
Java square root integer operation is not cast?
Math. The sqrt() function takes double as the parameter and returns double I'm using a program that uses a perfect squ…… -
Java – rxtx on MAC – serial port is already in use
I installed rxtx on my Mac Both Java jar program and Arduino software regard Arduino as a USB modem if they both claim…… -
Java implements the compression of multiple files into compressed packages
This example shares the specific code of multiple file compression in Java for your reference. The specific contents a…… -
Java – how to filter strings using numbers, dots, and commas?
OK, so there's a long string. I want to delete everything in it, except decimal numbers, commas and dots, I tried: str…… -
How to pass an object array as a parameter in Java
This method is public static void method (object [] params)). Should I call it under the following circumstances? >…… -
Java – compilation errors using NetBeans 8 but lower than lambda expressions
I'm using NetBeans 8 When my code contains a lambda expression and I try to compile, I receive the following error mes…… -
Implementation of HTTP file queue Download with Java
Preface many users may encounter such a situation: they find a good resource on the website, but the resource is divid…… -
Java read word excel PPT file code
POI: http://jakarta.apache.org/poi/index.html PDF@R_681_2419 @: http://www.pdfbox.org/ -
Java – int cannot dereference
I started in Java (I was learning microedition), and I got this error: "int cannot dereference" in the following class…… -
Java – what’s wrong with this simple “double” calculation?
See English answers > how to resolve a Java routing double issue13 I know that some decimal numbers cannot be repre…… -
Java – jsch: how to keep a conversation active
I am using SSH to write a Java GUI program for static route management My code is as follows: import com.jcraft.jsch.*…… -
Java – what are the different ways to handle errors in the FreeMarker template?
How to suppress FreeMarker template errors? class MyTemplateExceptionHandler implements TemplateExceptionHandler { …… -
McCabe cyclomatic complexity for switching in Java
I use the switch statement for 13 cases, and each case has only one line of return value McCabe daubed it in red Is th…… -
Can I build result sets from files in Java?
I don't have much experience in using result sets, but since resultset is an interface, I think I can implement it to …… -
Self modifying code in Java
Have you ever created or encountered self modifying code in Java? Solution Ignore the sad world, you may pass the self…… -
Java – eclipse command line parameters
I know how to run my application using the run configuration menu and command line parameters My problem is that wheth…… -
Java – Stanford robot Karel throws NullPointerException
I have started to learn the programming method (cs106a) course on Stanford website I use eclipse indigo classic 3.7 1 …… -
Examples of abnormal behavior in Java
Can anyone explain why the following if statement evaluates to false? public void addShapeToWhiteboard(PolyLine shape)…… -
Check positive or negative without using conditional statements in Java
I had an interview question last week: I need a function to print whether a number is positive or negative without usi…… -
Migrate Weblogic EJB program to JBoss
WebLogic Server is a top-level business application server. However, for small-scale developers, JBoss, a standard bas…… -
External optimized configuration method of configuration file after spring boot jar package
Without any processing, spring boot will use the application. In the project by default Properties or application YML …… -
Java 8 streaming to file
There is already an answer to this question: > modify file using files lines1 For reading, there is a good file Lin…… -
Zoom JavaFX: scrollevent scrolls when the content size exceeds the scrollpane viewport
I have an application that needs to enlarge scrollpane, but I still face two challenges In order to copy the problem, …… -
File based merge sorting of large data sets based on Java
Given a large dataset that is not suitable for memory, are there any libraries or APIs that perform sorting in Java? S…… -
What is the project directory structure for stand-alone Java se applications?
What is the standard project directory structure for stand-alone Java se (command line based) applications? The SRC fo…… -
An example shows how to compress and decompress 7z files using Java
Compressed into 7z files. Firstly, there is little compressed content of 7z on the network. In particular, fewer Java …… -
Java – Maven changes the order of plug-ins for different configuration files
I have a POM XML, I defined the same plug-in in two different configuration files (the same groupid and artifactid, di…… -
Java – how to enforce a method in a subclass without using abstraction?
I want to force subclasses to implement an implementation method of my mother class public class myMotherClass { …… -
Eclipse failed to load javahl library solution
Eclipse failed to load javahl library solution Today, when you open eclipse, a window pops up saying failed to load ja…… -
Java – multithreading – multiple users
When a single user accesses an application, multiple threads can be used. If there are multiple cores, they can run in……