Java
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Java – unchecked transformation
I don't want to suppress the warning Is there another way to handle this warning? An expression of type iterator requi…… -
Rewriting conditional statements in Java
Suppose I have the following code, which basically determines some condition matches, then assigns Boolean values, and…… -
How to perform validation in JSF and how to create a custom validator in JSF
I want to perform validation in some of my input components, such as < H: inputtext > using some java bean metho…… -
Java 8 – filter lists in map values
I am writing a method that uses the input map in the format of map < term, list < integer > > One of the t…… -
Java – jodatime gets the current number of milliseconds from one day
I tried to get the current number of milliseconds from the beginning of that day So I want to do the following calcula…… -
Java – guava why is tostringfunction not a generic function?
Guava tostringfunction() has the following Declaration: public static Function<Object,String> toStringFunction()…… -
Java – view global / static / inherited variables in the eclipse debugger
This is a little trouble for me, rising When I debug the program, I can see the variables in the direct scope, but I c…… -
Java – access spring beans * through dependency injection instead of*
We have some domain objects created at runtime – not spring These domain objects need access to some service type bean…… -
Syntax highlighter for Java
As you know, there is a PHP syntax highlighter named Geshi, which supports a large number of programming languages or …… -
Java – integer range when using 64 bit JDK
As far as I know, there is a difference between 32 - bit and 2 - bit integers The 64 bits are as follows: I use the 64…… -
Java – Lucene performance
Can you suggest steps to follow for Lucene performance Especially big data (about 1TB PDF files should be indexed) Sol…… -
Multithreading – the sender becomes an actor [akka: / / main / deadletters]
I can't figure out why I made a mistake "dead letters" class MyActor extends Actor { private def getIdList = Future…… -
Java – play! Frame Create a new view
I created a new project using the playback console main.scala.html index.scala.html I want to add a new view file I…… -
Download files of unknown length over HTTP using java
I want to download HTTP query in Java, but the length of the file I downloaded is uncertain I think this is very stand…… -
Java – why does the program have an “illegal startup type” error?
This is a related code snippet: public static Rand searchCount (int[] x) { int a ; int b ; int c ; …… -
Find substrings in strings in Java
I'm writing a program to find substrings in strings in Java without using any Java libraries I wrote a function substr…… -
Java – loads drools / KIE workbench artifacts directly from the repository
We tried to switch to drools 6.0 using a new KIE workbench (formerly known as guvnor) and a new Maven based artifact N…… -
Because Java io. NotSerializableException：org. apache. spark. Sparkcontext, spark job failed
When I try to apply method (computedwt) on RDD [(int, arraybuffer [(int, double)])] input, I face an exception input:s…… -
Java – subtract the smallest number from several numbers
I have two numbers I want to subtract the lower number from the two values x: 1000 y: 200 => result: x = 800 and y …… -
Java – quicksort partitioning algorithm
I'm trying to write a quick sort algorithm using the cormen algorithm textbook Here is my code class Quicksort { p…… -
Java 8: intstream to integer []
I'm writing a simple program that will eventually plot the runtime of various sorting algorithms written in Java The g…… -
Java – simple if statement and normal if statement
At the Java bytecode level, is there any difference between a simple if statement (example 1) and a normal if statemen…… -
JavaFX – disable row selection in tableview
I have a read-only tableview in JavaFX 8. I don't want the user to select rows Solution After a while, I found out how…… -
Java – replace decimals 1 to 10 with names (“one”, “two”.)
I try to take a string and then return a string of numbers 1 to 10 and replace it with the words of these numbers For …… -
Java – sum of elements in the array
I'm doing a simple task for a summer java course. I just hope you can look at my code and see if the way I do it is th…… -
Java – Weblogic increases memory
How to increase the memory used by Weblogic (Java) When starting the server from eclipse, it displays a message, that …… -
Java – how do I save a file from a Jersey response?
I tried to download swf files from web resources using Jersey I wrote the following code, but I couldn't save the file…… -
Java – why can’t I add the first header to getpreferencescreen?
The standard setting activity from Google Android studio now displays the first title "general" So I modified the code…… -
Java – how to use reflection to tell a method to have a varargs parameter?
This is a sample code package org.example; import java.lang.reflect.Method; class TestRef { public void tes…… -
How to detect the submit button clicked in multiple submit button scenarios in a single action class?
I have a form in JSP There are two submit buttons: search and add new <s:form name="searchForm" action="employeeAct…… -
java. net. Socketexception: network unreachable connection
I tried to download an XML text file from a web server using this method: static void download (String url,String file…… -
Verify java version compatibility
I have a jar file compiled with JDK 1.7. I want to check whether the Java runtime environment of my jar is 1.7 or upda……