包含标签：Java 的文章
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Are there any Java APIs or built-in functions to solve annuity problems?
My boss asked me to create a module to calculate reverse compounds The question is: if I want to achieve $1.000 in 24 …… -
Java – adds a char to the string at position X
public String addLetter(char letter,int position,char[] word){ public String addLetter(char letter,int position,char[]…… -
Java – why is my field not initialized to the value I gave it
I have the following courses: public abstract class AClass { public AClass() { aMethod(); } abst…… -
Java – search the scala list to find what matches the attribute
What are the usual Scala methods? I have a list. If I find something that meets certain conditions, I want to return "…… -
Java – Oracle – pool connected to spring framework
We are trying at @ L_ 301_ Implement Oracle connection pool with the help of 0 @ framework We are using the DBCP conne…… -
Java – use list Multiple use of size () or variable? (local optimization)
I have a simple function called many In this function, I have many call list sizes (including about 10 elements): list…… -
There are many if conditions in Java
I just started learning Java and have a very basic problem I have a label. I want to change the color when a random in…… -
Why is this code sent to me stackoverflow in Java
I tried to use long and double with C, K, n variables, but NetBeans showed a stack overflow error: public class Main {…… -
Java – replace the contents in curly braces with something else (e.g. {1}) [copy]
See English answers > java: string formatting with placeholders 3 Hey {1},you are {2}. Here 1 and 2 are keys whose …… -
Java – why are different long values converted to the same date / time?
public static void getTime() { public static void getTime() { SimpleDateFormat sdf = new SimpleDateFormat( "yyyy-M…… -
Java – NullPointerException when using customlistadapter
I created customlistadapter in Android appiclation But when I implement it, I get this error NullPointerException This…… -
Java: generic filter mapping function
I'm trying to develop a general function to filter maps My code so far is: public static Map<?,?> filterAttrs(Ma…… -
Does the java compiler pre calculate the sum of text?
int i = 10 + 20; int i = 10 + 20; Is it true that the compiler will process this code, add 10 and 20 bytes, and the co…… -
Java – how do I set the resource ID for a token?
I try to use this guide to implement restful web services of oaof: https://spring.io/guides/tutorials/bookmarks I can …… -
Java – jtabbedpane: displays the task progress in the tab
I have a simple swing Java application that performs a search and the results are displayed in a new tab When the sear…… -
Java – the trouble of iterating HashMap using JSF, myfaces, and facelets
I had some trouble looping through HashMap to print its values to the screen Someone can check my code carefully to se…… -
Java – eclipse type erasure
I have a method defined like this: public <T> T methodName(Class<T> clazz) My unit test I mistakenly teste…… -
Java – bubble sort 2D array
I need to build a bubble sort 2D array code The trick here is that I can't use the one-dimensional array helper or mov…… -
Java – JPA onetomany list cannot find mappedby attribute that should be inherited
We are currently making some requirements. We must add some similar entities (car pictures, pet pictures, holiday pict…… -
selenium – junit. framework. Assertionfailederror: test not found in register
I had a problem making this test case work Who can point me in the right direction? I know what I did wrong. I just do…… -
Strange array behavior in Java
This is a simple array declaration and initialization int arr[] = new int[10]; for(int i = 0; i<arr.length; i+…… -
Java – how long does the HTTP connection remain open when we use the asynccontext mentioned in the servlet3 specification?
How long does the HTTP connection remain open when we use the asynccontext mentioned in the servlet3 specification? fi…… -
java – Android . The AAR library interface parameter name is missing
I use Android studio (1.2.2) I built an Android module library, which declares an interface: public interface myInterf…… -
Java – SQL SELECT statement with where clause
How do I write this SQL statement without a hard coded value? resultSet = statement .executeQuery("select * from m…… -
Can I access Gmail mail through POP3 and oauth2 in Java applications?
I'm developing a Java application and I need to access Gmail mail So far, I can use OAuth mechanism to connect to Gmai…… -
Java – my shaderprogram doesn’t work
My main language is French. I will try my best I try to understand shaders, but I can't find out why my shaders don't …… -
Java – the order of bean initialization in spring
My spring configuration file has the following beans: @ h_ 419_ 7@ <bean id="myList" class="java.util.ArrayList">…… -
Is it a good habit to use Java 8 for Android development?
I read the instructions for Android development using java 8 from this answer and (orfjack / retroambda) I wonder if i…… -
Configure Java HBS to find the location of some templates
In short, Java HBS (jkack. Handlebars) is looking for some templates in a directory completely different from the pare…… -
Java – the entity manager does not answer until the Native Query call is completed
I used hibernate and Oracle SQL in the project When I call the createnativequery method of the entity manager, the ent…… -
Java Collections API Bug？
I stumbled upon collections An error in the Java collections API in Java The following is the code in the JDK source c…… -
How to write Fibonacci Java programs without using if
What is the code written in int Fibonacci (int n) instead of using "if" Java recursive Fibonacci sequence as they do h……