Java
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Layout manager preferredSize Java
I'm still trying to learn how layout manager works I made a frame with two jpanels I set the preferredSize of each pan…… -
Java – returning an int from a native function (C, JNI) causes the application to crash
Trying to figure out why returning an int from a C function call causes the entire application to crash without any er…… -
How do Erlang virtual machines run as daemons?
I want to run Erlang VM as a daemon on a UNIX server in non interactive mode Solution The easiest way is to give the E…… -
Eclipse 4.3.0 with Java 8 patch 2 unrecognized source level 1.8
I am using eclipse 4.3 with patches for Java 8 2, as well as M2e and subclipse, completely update all contents to the …… -
Compare twice in Java more or less
Date date1= new java.util.Date(); Date date1= new java.util.Date(); java.sql.Date sqldob = new java.…… -
Java – using quartz and spring
In my application, I need to be able to create scheduled jobs (dynamically) based on the incoming request type Can I a…… -
Java – jspinner: increase the length of the edit box
I have a jspinner that displays decimal values from 0.0 to 999.0 It seems to work properly, except that it displays a …… -
Overhead and code speed (java.io.file array and java.lang.string array)
Just trying to sort out a small category I have here At present, I am developing an application involving collecting t…… -
Java – CompareTo may return 0 instead of TreeSet / treemap
I need an ordered set of objects and am currently using TreeSet My problem is that CompareTo of objects usually return…… -
java. util. zip. Zipexception: duplicate entry with firebase
I'm building an application using firebase, but I got a duplicate class error I checked all dependencies, but I couldn…… -
java – DataOutputStream#writeBytes(String)vs BufferedWriter #write(String)
I want to create an HTML file for my report You can use bufferedwriter #write (string) to create the content in the re…… -
Java – randomgenerator – lost 50% of aircraft simulation
I'm working on a problem that I'm a little confused The problem is, suppose you were a general of the British air forc…… -
In Java, is there a more concise method for if statements with a large number of |
I know this problem is basic, but I'm looking for a less clumsy method. The following if statement: if ((sOne.Contains…… -
Is Java: executorservice less efficient than manual thread execution?
I have a multithreaded application When using thread When start () starts threads manually, each concurrent thread use…… -
Java – how to use apostrophe (‘) in XPath when using webdriver to find elements?
I need to use an apostrophe (') in my XPath expression, and I need to use it when using webdriver to find elements I n…… -
Java – can I close and reopen the socket?
I learned an example of socket use In this example, the client sends a request to the server to open the socket, and t…… -
Java – an instance that calls a static method
nice day! I'm a little confused I want to use calendar, so I search it on the Internet and encounter the following cod…… -
Why do single threaded Java programs have so many threads?
I have a java program with 13 threads, but only one is 99% CPU utilization and has been running for about 24 hours Oth…… -
Java – resource exception not found
I got a resource not found exception in the line where I referenced one of my class methods that mapped the EditText o…… -
Java stream operation sequence executed by the terminal
See English answers > stream intermediate operations ordering 2 For example, let's look at these examples using the…… -
What are the effects of redundant import statements in Java?
What is a redundant Java import statement? Do they affect the compiled runtime (performance / size)? Or something like…… -
Java BinarySearch
Can I get some help? I've tried many ways to make this work. I get array sorting and printing, but then my binary sear…… -
Java – use limit connection string
Using only the standard Java library, what is a simple mechanism for concatenating strings to restrictions and appendi…… -
Java – how to prevent the function passed to optional orelse from being executed when optional is not empty?
If I call a function from orelse, the function will be executed even if optional is not empty Is there any way to rest…… -
Java – use jodatime to calculate the month between the two dates of the holding year
I use this code to calculate the number of months between the input pastdate and CurrentDate It uses jodatime LocalDat…… -
Using Java and AES to encrypt large files
I tested my code with files below this value (10MB, 100MB, 500MB), and the encryption worked normally However, I encou…… -
Java – can I restart my application using main()?
I'm working on a way to restart my java application by clicking a button on the GUI I searched the Internet and encoun…… -
Java – does Python really create all binding methods for each new instance?
I'm reading the classes in python (3.4). According to my understanding, it seems that each new object has its own bind…… -
JPA – must be in the connectiondrivername property “how do I resolve it?” Specify the jdbc driver or datasource class name in
Overview: This is my first WebSphere 7 server & amp; JPA 1.0 & EJB & Derby database Second: This is persis…… -
What are “nodes” in JavaFX / fxml?
What does the word "node" mean in the JavaFX / fxml context? If I search this question, I find that everyone is using …… -
Send trap V2 in Java
How to send SNMPv2 traps from Java applications I tried to do an example on snmp4j, but it didn't work Solution I use ……