Java
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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() { ...…… -
Open source audio library in Java
I'm looking for a similar one from un4seen（ http://www.un4seen.com/ ）Bass open source audio library for Java applica…… -
Why does Java forkcomb not cause stackoverflowerror?
I'm a new programmer. I'm trying to teach myself what causes stackoverflow I play with loops and cause errors, but the…… -
Loop stop Java
For the following code, when "n" is about 100000, it will stop running I need it to run to a million I don't know what…… -
Java – generics – what am I missing or what’s the point?
I have the following code: public class AClass<X extends AnInterface> implements AnotherInterface { public …… -
Triangle numbers in Java
I'm new to Java. Now I want to learn better loops I did some examples, but I don't know how to make a triangle that lo…… -
Is there any priority between multiple try / catch executions in Java?
In the following program, sometimes I get the following output: Number Format Execption For input string: "abc" 123 oc…… -
String initialization and connection in Java
Everything is fine in my application, but I want to improve performance and optimize my code Which of the two is bette…… -
Connecting with Oracle in Java application
I have downloaded Oracle express 11g and installed it Now I want to connect it from a Java application This is my conn…… -
Java – getting fragmenttransaction from activity when using compatibility
So I'm developing a project that I want to run on traditional Android devices, so I use the compatibility library I us…… -
Java – common objects in Apache thrift
I wonder if I can use IDL language to define "general object" in Apache thrift, similar to the "object" class in Java ……