Java
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Java – find hash table with maximum size
I have the following data structures: Map<Integer,Map<String,Double>> ---------------- | | a 2 | |…… -
Java – how to set the screen / window size when using ghostdriver
I use ghostdriver as webdriver implementation in Java - based projects I want to take a snapshot of the page The defau…… -
Java enumeration list in class [copy]
See English answers > java enums: List enumerated values from a class 4 Namely public static <T extends Enum>…… -
Java – sun. Not found security. ssl. SSLSessionImpl
When I try to use okhttp or javax ws. rs.client. Client, the following error occurs In sun security. Search in SSL pac…… -
Java – many Boolean flags are entered into the class
I have a dialog box that displays various contents according to the status of the application and the security of the …… -
Java – is there a simple way to loop stdin in guava?
In Apache commons, I can write: LineIterator it = IoUtils.lineIterator(system.in,"utf-8"); while (it.hasNext()) { …… -
Java program organization: how to get rid of this large-scale case statement?
I'm creating a program that will fill in attributives Now I'm simulating "various words" like this: public class WordD…… -
Java: formatting strings as phone numbers
I have an unformatted phone number string ("5551234567") I want to format this string in the UI for display purposes A…… -
Java – in borderlayout Keep the size of JButton in center
Is there any way to keep the natural size of JButton in the center of borderlayout? Now, it expands in all directions …… -
How to smoothly scroll JFrame in Java
A JFrame in my java application contains a JPanel, and I create some drawing objects at runtime The problem is that wh…… -
Java – my syntax is wrong. Is it effective for me to do this?
I'm trying to make a way to tell me whether the weather is a number or a prime This is the code: class prime { pu…… -
Java – why shouldn’t we use the (default) SRC package?
I recently started using the eclipse IDE and have read in many places that I shouldn't use the default (SRC) package a…… -
Java – how to add an hour to my time
I have time in the following format and use this value to set the text of my button String strDateFormat = "HH:mm: a";…… -
Java – speedup HashSet and HashMap performance
In Java, I have: Set<Integer> set = new HashSet<Integer>(); callVoidMethod(set); ... public static void ca…… -
What is the easiest way for Java to assign default variable values with or?
I read data from a CSV file and want to assign column values to variables There may be cases where the file does not c…… -
What Java library should I use for image clipping / letterboxing?
I am looking for a Java library for image clipping / resizing I planned to use jmagick, but I haven't maintained it si…… -
RX Java – rxjava returns a single, which is completed after execution
I'm trying to do the following: return some data as a single, and then execute it after completion Due to single Andth…… -
Java – check that the ArrayList of strings is in alphabetical order
I have an ArrayList named account, which contains strings I'm trying to write a method to check whether they are order…… -
Java – linkedhashset as return type of API public method
Let's consider the following example Write an API with a public method that returns a collection of unique objects I t…… -
Java – how to create array objects when using parenthesis lists
I understand that when I call its constructor with the new keyword, an array object in Java will be created: int[] myI…… -
Java – is there a way to pass a string to a mutable method?
I know that string variables are immutable in Java by default But is there any way to set a string variable or make it…… -
The Java program accepts the date in any format as input and prints the month,
The Java program accepts the date in any format as input and prints the month, Is it possible I tried the following, a…… -
Java – does using volatile only make sense in multiprocessor systems?
Using volatile only makes sense in multiprocessor systems Is this wrong? I'm trying to learn thread programming, so if…… -
Why does the java compiler report only one error at a time?
I have a clip class T{ int y; public static void main(String... s){ int x; System.out.println(…… -
Java – double counting that produces odd results
See English answer > is floating point math broken? 28 Solution Oh, I like these... These are caused by inaccuracie…… -
Assigning objects in Java
I have this Code: this.elements = elements; Where the element is list Copy list or just pointer copy, both represent t…… -
Java coding practices, runtime exceptions, and this scenario
In the following scenario, I try to understand how to handle this code and its relationship with runtimexception As I'…… -
What is the priority of static blocks in Java?
public class Static public class Static { static { int x = 5; } static int x,y; public st…… -
Java – how do I find a value between two strings?
How do I "find" and "get" the value between two strings? Namely: < a > 3 < / a > I'm reading a file to fin…… -
Java – problems in instance variable initialization
Here are some sample code, class Base { private int val; Base() { val = lookup(); } public int lookup() { …… -
Java – how to get the availability details of a running instance
I am traversing the list of running instances returned by the describeinstances API I want to know how to retrieve the…… -
How to change the default Java icon in Jfilechooser
I want to change the built - in Java icon from Jfilechooser JFrame class has seticon image() method of set icon But I ……