Java
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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…… -
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 hibernate selects multiple rows from the table and assigns the results to the list
I want to select multiple rows / records from the table and put the results into variables Then I want to print each l…… -
Java – error: invalid content found starting from element ‘x’ Expected ‘{x}’
I'm trying to validate simple XML with simple XSD, but I always get this error: cvc-complex-type.2.4.a: Invalid conten…… -
Java – removes duplicate beans from the list
I loop through a set of beans and check something and add it to the list I just want to add a specific item List<Pa…… -
Java – why system out. Println must be inside the method?
class Employee { class Employee { int DOB; int eid; String name; double salary; System.out…… -
Java character set / character encoding
I have a Spanish file, so it is full of the following characters: á é í ó ú ñ Ñ Á É Í Ó Ú I have to read the document,…… -
Improve performance when working with images in Java
I'm writing a program that includes an image folder (usually about 2000 JPEG images) to resize them and add them to th…… -
Java – find the largest prime number in 600851475143?
I tried from http://projecteuler.net Problem solving 3 But when I run the program, it doesn't print out public class p…… -
Java – get bufferedimage from and OutputStream
I have a function, int readfull (filehandle, OutputStream out), which reads the entire file from the ssh server and st…… -
Java – SmartGWT: can I color a row in the list grid?
All can color a row in SmartGWT listGrid? Solution In SmartGWT, methods ending in style (such as GetStyle, getbasestyl…… -
Java – internal classes that use the main method cannot be compiled
abstract class Manager { abstract class Manager { static void test() { System.out.println(12); } …… -
Java – solve problems larger than memory limit
I've been thinking about the following scenario recently: suppose you have a huge database and you want to perform som…… -
How to parse time in Java?
I want to know whether Java has a built-in method for parsing time / date, as shown below: 5m1w5d3h10m15s This is 5 mo…… -
January 31 of java calendar
I have the following code: – Calendar calc = Calendar.getInstance(); SimpleDateFormat sdf = new SimpleDateForm…… -
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 – check string contents
I need to perform the following checks: If mystring contains() Any other character Letters A-Z, A-Z, "_, "–", numbers …… -
Why does my java code execute bash commands incorrectly?
I tried to make my java program interact with Linux bash, but something went wrong I have a simple executable prog tha…… -
Java – which JRadioButton to select
I have several jradiobuttons in the button group private ButtonGroup radioGroup= new ButtonGroup(); private JRadioB…… -
What is the guarantee of generic drugs in Java?
Although I know, generics are used to make our code more general and flexible But what is the guarantee of cast iron i…… -
Java – how to wait for all callables to complete execution before continuing?
I have the following hash code: public class MyCallable implements Callable<Long> { @Override public Lon…… -
How to return values from methods that contain arrays in parameters in Java?
I have this code, but it doesn't work! public class Trial { public static void main (String [] args) { …… -
Java – create viewholder final in custom listview adapter Android
I have a listview with such a custom adapter @Override public View getView(int position,View convertView,ViewGroup par…… -
The difference between void foo (t y) and void foo (t y) in Java generic classes
Explain in detail the differences (if any) between the following two versions of Java generic classes? class C<T>…… -
Java – the best string technology equals comparison
If the block is better? private static void checkStr(String str) { if (str.equals("exit")) { System.out.p…… -
Java Swing – perform actions on clicks
I think I've written myself into a corner I'm trying to do this with Java swing Click the next button to load a new li…… -
Java – JPA criteria API select object with null column
I have a table "word" in PostgreSQL DB: CREATE TABLE word ( word_id bigserial NOT NULL,word character varying(15) N…… -
How to run from Java SH file?
See the English answer > how to run UNIX shell script from Java code? 16 Runtime.getRuntime().exec("src/lexparser.s…… -
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…… -
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 – string instantiation and StringBuffer instantiation
I can't figure out if String ab = "hello"; //straight initialization String ab_1 = new String ("hello_1"); //…… -
Override Private Final methods in Java
class X1 class X1 { private final void show() { ... } } class X2 extends X1 { private final void show() { ...……