Java
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Asynchronous – rxjava adds items after creating observable
I just started using RX Java and I got stuck Maybe I don't use rxjava in the right way, but I need to add it to observ…… -
Java – selenium. In selenium webdriver What is the equivalent of waitforpagetoload (“30000”)?
The following is the Java code waiting for the page to load in selenium RC: selenium.waitForPageToLoad("30000"); What …… -
Java – App Engine blobstore – what can I do to limit the size of files that users can upload?
What can I do to limit the size of files that can be uploaded? I know I can use swfupload to limit its client, but how…… -
Java – what is a better way to keep the adapter as an active internal class or external class?
I want to check for a better and faster way to use the listview program with the adapter Is it out or activity class? …… -
Java adds text to a specific line in a file
I wonder if I can add a line to a file with Java For example, myfile: 1: line 1 2: line 2 3: line 3 4: line 4 I want t…… -
Why is line 17 of this Java program not executed?
As an exercise in my java course at uni this morning, I had to write a small program to ask users to enter some detail…… -
JMeter slave – server failed to start: Java rmi. RemoteException: cannot start Ip-10-142-111-66 is a loopback address
I created a quasi system EC2 Ubuntu server and only used hte to install JMeter to follow sudo apt-get install jmeter T…… -
Java – illegalargumentexception: the name of the executable file has embedded references and split parameters
I received an error: IllegalArgumentException : Executable name has embedded quote,split the arguments Runtime Runtime…… -
Java – JPA many to many connection table entity, compound key “null ID generated”
This is my entity: public class Account extends AbstractEntity<Long> { @Id @SequenceGenerator(name = "a…… -
Java – use the properties in the properties file
I apologize for the title I can't find a better way to explain the situation I use the property class to load property…… -
Java – the same string comparison gives me false
See English answers > How do I compare strings in Java? 23 String temp = ""+(num1*num2); Boolean equal = temp == an…… -
Why do you have to deal with () an out of range Java awt. Window？
One of the memory leaks I found in my application was Java awt. Window. All windows specific static field that tracks …… -
Java – Eclipse: import and export operations in the “save operation” option
You can import export cleanup settings as XML files in preferences - > java - > code style - > clean up I wan…… -
Properties in Java – can we use comma separated keys for individual values?
I want to provide multiple keys (> 1) for a single value in the properties file of my java application A simple way…… -
Java – how do I check if a string is a valid XML element name?
You know the functions in Java, which will verify that a string is a good XML element name Form W3Schools: I found tha…… -
Java – create meta-inf / services folder in eclipse
I tried to create an extensible application in Java and chose to use SPI According to this tutorial, I'm paying attent…… -
Java – how to delete / filter / ignore certain packages from Emma (code coverage)
I tried to delete some packages from my report and got into trouble Can someone help me? I use Emma in my ant process …… -
Java – why not more boring GC
Except Azul, all GCS I know are concurrent, but at least there are some small worldwide components Why isn't there mor…… -
How to call collections on a part of a Java array Shuffle
So I have the following array: String [] randomList = new String [16]; randomList[0]="Dog"; randomList[1]="Dog…… -
Java – use the properties in the properties file
I apologize for the title I can't find a better way to explain the situation I use the property class to load property…… -
Java – how do I change the background color of jooptionpane?
I've added joptionpane to my application, but I don't know how to change the background color to white@ H_ 301_ 2@`int…… -
Java – check user name and password in Android
I have a username and password field, now I need to check it and redirect it to the next page of Android public void o…… -
Do java – HQL queries always hit the database and get results?
I'm going through hibernate and when to use criteria vs HQL. My understanding is to use hibernate. Whenever we query t…… -
Java – resource folder in Android studio unit test
I have a gradle project with the following structure: project/ src/ androidTest/ java/ …… -
Java – get the absolute path of all files in a given folder
I need to save all the file names and absolute paths in a given directory in memory myDirectory. List () – retrieves o…… -
Can you make an unclosed and indivisible Java application?
Is there any way to ensure that users cannot close or leave my swing application? I tried to make it full screen, but …… -
Predicate based method of Java 8 stream indexof
See English answers > stream way to get index of first element matching Boolean int index = list.stream().indexOf(e…… -
java – Selenium – driver. Getpagesource () is different from the source viewed from the browser
I tried to use selenium to capture the source code from the specified HTML file, but I don't know why. I didn't get th…… -
Java – simple XML parsing from XML to list
I use simple XML (simple-xml-2.6.2. Jar) to parse XML files, such as: <?xml version="1.0" encoding="UTF-8" ?> &…… -
Open source Java reporting framework
I want to create several reports and select data from several SQL tables, so I don't create different reports. I want …… -
Java – declare and throw and throw without is declared exceptions
What is the difference between dual methods in Java? public void methodA() throws AnException { //do something …… -
Check whether the elements in the array are subclasses in Java
Let's assume that I want to check whether the values in the object array belong to a superclass or subclass. For examp……