Recent Posts
-
Simplify this generic method to join Java arrays
My goal is to implement a method that connects any number of arrays to a single array of their common supertypes and r…… -
Inheritance in T and Java
I have a class a static field F: class A { public static String F = null; } Class B: class B extends A { public…… -
Java – returns two different values from the method
I have a method to parse the string record list into an object and return the object list So my method signature is li…… -
Java – underlying datastructure of HashSet
For ArrayList, the basic datastructure is array. For LinkedList, it is a link object. For HashMap or hashtable, it can…… -
java. Lang. IllegalStateException: sendredirect() cannot be called after submitting the response
Two days I tried to find out what was wrong I read here that I should add a return to the code, and then I did it, and…… -
Java – JTable does not display column headers
This is my first time using GUI, so I'm not sure what caused the problem My uni mission The project aims to develop a …… -
java – Wait. Until() and webdriver pagefactory elements
I'm using the @ findby annotation to find elements on my page like this: @FindBy(xpath = "//textarea") public Inpu…… -
Java – enable assertions at runtime in NetBeans
I tried assert example It works normally in commandprompt I run the code with the following command java -ea Assertion…… -
Java – from Import 3D skeleton animation from SMD model
I'm writing one SMD importer, I'm trapped in the bone animation part The problem is that I don't know exactly how it w…… -
Java: changing the value of the float object
I have looked inside the Javadoc of float, but it seems that there is no way to modify the value after construction? F…… -
Java – treemap vs ArrayList – performance and resources when iterating / adding / editing values
Talk about performance and resources Which is faster and requires less resources when adding and editing values, Array…… -
Java – how to check whether the function execution exceeds the specified number of seconds?
If it takes more than 3 seconds, I want to time out a function long startTime = System.currentTimeMillis(); getStaticJ…… -
Implementing binarytree in Java
I have this code for binarytree creation and traversal class Node { Integer data; Node left; Node right; …… -
Java class fields by reference?
I created the following tests to understand how Java handles objects, which puzzled me public class MyClass { publ…… -
Send the file through objectoutputstream and save it in Java?
I have this simple server / client application. I'm trying to let the server send files through OutputStream (fileoutp…… -
Java – why can’t Android os. build. Version resolves to a variable?
I received an error: "android.os.build.version cannot be resolved to a variable" as attached to the line "int myversio…… -
Java – NetBeans do not recognize arrayutil
I am using the following statement int[] numList = ArrayUtil.randomIntArray(100,100); I have imported it import java.u…… -
Java – Android: read the HTML of the web page into a string
I'm new to Android development. I'm trying to read the HTML of the web page, store it in the following string ("myhtml…… -
Graphic implementation in Java
I'm trying to create a graph class that uses another class. The vertex class represents all the vertices of the graph …… -
Java – abstract methods have no body?
I'm a novice in Java (I've been studying for 4 months now) So my question may seem too simple My understanding is that…… -
I need a basic simple java layout method
I have checked the Internet about flowlayout, group, etc. all these are useless examples I just need a basic method to…… -
January 31 of java calendar
I have the following code: – Calendar calc = Calendar.getInstance(); SimpleDateFormat sdf = new SimpleDateForm…… -
Java – how to fade into JPanel and children?
I know I can fade in the panel by adding an alpha value to the background color and background color Timer However, ho…… -
Save code online (Java eclipse)
At present, I have saved an online copy of my code on Dropbox I wonder if there are any other convenient options, such…… -
Java – why does get () of HashMap return null when it should not?
I wrote a method to check whether a string has only unique characters I send the apparently non unique string "11", wh…… -
Java – how do I set the accelerator for the JMenu submenu?
I have a user request to add the accelerator to the submenu (JMenu), which will allow the user to press the shortcut a…… -
Read file – Java io. FileNotFoundException
public void loadFile(int level){ public void loadFile(int level){ try { //Create new file …… -
Refactor this java code to check whether the string contains any of these possibilities?
I need to check the possibility that a string does not contain any of these strings: MNC bra LEB Mar RVC method GLZ Wo…… -
Java – spring security oauth2 client
I have set up an oauth2 server with spring security I want to write a client application to use this OAuth server with…… -
Replace dash characters in Java strings
See English answers > java string replace not working 6 str.replace("\u2014",""); Can you help me? Solution String …… -
Java – why are constructors not inherited?
I've been using eclipse Juno to learn constructors in inheritance When I press Ctrl o twice in childclass, it will dis…… -
Java – AccountManager: invalideauthttoken does not invalidate the token
I tried to get a brand new token from the Google account stored in the Android device, but all the tokens I got were o……