Java
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Java – when deploying spring app in Tomcat 6, an “access denied” message appears
When I tried to deploy my spring application on Tomcat 6, I received an error message java.util.logging.errormanager:4…… -
Java – what did I do wrong with this quadratic formula?
a = 1,b = -7,c = 12 a = 1,b = -7,c = 12 public static void quadratic(double a,double b,double c){ double r1; …… -
Java – a term that distinguishes between “default” and “makeup” classes in OOP
ArrayLists, buffer readers, scanners, etc All default classes that already exist in the language Unlike the public cla…… -
Java – regular expression or exception handling?
Which of the following is better to check whether the string is floating? try{ Double.parseDouble(strVal); }catch(Num…… -
Java – how to add icons to items in the navigation drawer
I want to place icons next to items in my navigation drawer. I have set such icons: Titles = getResources().getStringA…… -
How to use java to find data in small data sets?
We have to find some data according to three input data fields Search must be fast There are only about 20 possible se…… -
Datamapper – doctrine2 best practice, should entities use services?
I answered a similar question: using the data mapper pattern, should the entities (domain objects) know about the mapp…… -
Java – declare anonymous inner classes
rb.addActionListener(new ActionEvent(ae) { rb.addActionListener(new ActionEvent(ae) { public void actionPerformed(A…… -
Java says this method has a constructor name
I want to return the value of my array plus the return value of the recursive call But for some reason, Java doesn't w…… -
Parsing timestamp with time zone in Java?
I'm trying to parse a string of time stamps using the time zone obtained from DB The string is as follows: SimpleDateF…… -
Java – Method Parameter confusion
Usually, time methods require more than 3 parameters of the same type, such as void mymethod (String param1,String par…… -
Java – which implementation is better: a cache based on weakhashmap or a cache based on ThreadLocal?
It's hard for me to decide between the following two implementations I have written two POC implementations and am gla…… -
Java – can class types be passed and used as return types?
I have a method to use the parser. The example of parser call is: SpecificClass ret = parser.parse(getOutputStream(),S…… -
How to interrupt a thread blocked by some socket IO operations without closing
I really want to know how to interrupt a thread blocked by some I / O operation? I / O is through socket, I don't want…… -
Array. In Java What is the internal code for length()?
What is stored in the 10th position of the array int[] array=new int[10]; Suppose we have values stored from array [0]…… -
Java – wait () is an “if” block or a “while” block
See English answers > why should wait() always be called inside a loop I've seen many examples of using a while loo…… -
Java – coding guide for case of numeric text suffix
I did some Googling, but I couldn't find a solution to my problem According to the double and float declarations, are …… -
In Java, is it an existing object on the heap?
In Java, is it an existing object on the heap? I try to understand the difference between an uninitialized local varia…… -
Java – calculate occurrences in Multimap
I have a Multimap with multiple similar values: {Entertainment=[5],Food=[2,2,2],Products=[11],Health & Beauty=[3]}…… -
Does the Java optimizer remember calculated values?
Which fizzbuzz implementation is more efficient? public static void fizzBuzz1(int n) { boolean fizzed,buzz…… -
Is there a detect method from Smalltalk in Java?
I search for method detection in Java 8 I used to use it in Smalltalk, but Java doesn't seem to have it Smalltalk's de…… -
Need help understanding the following Java syntax
public void printPixelARGB(int pixel){ public void printPixelARGB(int pixel){ int alpha = (pixel >> 24) & …… -
Java: what is the correct way to convert a string to a valid amount (BigDecimal)
I must convert the incoming string field to a BigDecimal field representing a valid amount, for example: String amount…… -
Java – use Spock JUnit test and gradle to build the system and output unit test results on the console
GNU Emacs 24.3.1 GNU Emacs 24.3.1 Gradle 1.12 spock-core.0.7 Hello, I am using gradle to build the system and Spock fr…… -
Why doesn’t my java code execute system out. println？
I'm using the NetBeans IDE and it doesn't detect any errors I'm just curious why this code didn't execute For referenc…… -
Java – a replacement for an existing school assignment
I have a school assignment that includes writing a scanner / lexical analyzer for a given simple language The scanner …… -
Java – Android – error connecting using login URI
I'm trying to connect Google spreadsheets in my code It worked for some time, but recently it stopped working 06-01 17…… -
Java – I can’t start the timer twice
I'm making a timer in Java. I need help The main class adds a swing timer I have a JFrame with two panels, one has jla…… -
Java – invalid or corrupt jarfile / usr / local / bin / selenium-server-standalone-2.38 0.jar
I tried to master unittesting and began to focus on this nettuts tutorial In this tutorial, it lets you download a jav…… -
Java – Dao and service layer in spring: session management
Do I correctly understand Dao & amp; Principle of service layer interconnection? The service layer uses the DAO ob…… -
24 hours in simpledateformat() and milliseconds in Java
I'm building a DAQ software, and now I'm creating a log file I want to display the time on each item A simple code (un…… -
Java – how to perform ant path mapping in the ‘War’ task?
I have several jar file schema sets, such as <patternset id="common.jars"> <include name="external/castor-1.……