Recent questions tagged java

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java - Stop a swing Timer from inside the Action Listener

I'm trying to stop a timer inside the the ActionListener. Below is the code of what i'm trying to do. I ... null; } } Thanks in Advance Krishnan See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to get specific XML elements with specific attribute value?

I am trying to parse an XML file from a URL by taking all "<Type>" elements where is parameter type_id=" ... the attribute type_id = "4218"! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to mock a void static method to throw exception with Powermock?

I am trying to use Powermock and Mockito to mock a void static method to throw exception as below. But I met a ... class); Adder.add(anyInt()); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java Long datatype comparison

Why does the code below return false for long3 == long2 comparison even though it's literal. public class Strings { ... .equals(long2)); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why clone() is the best way for copying arrays?

It's a shame for me, but I did not know that: You should use clone to copy arrays, because that's ... considers clone() as the fastest way. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What is an efficient and elegant way to add a single element to an immutable set?

I have an immutable set (cast as a Set<Integer>) that potentially contains many elements. I need a Collection that ... I do not require its use. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - @RestController in other package doesn't work

I start with learning Spring and I create basic project which creates database, insert values and next print it ... </artifactId> </dependency> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Mockito verify that a specific lambda has been passed as an argument in mock's method

I want to test the following method: public void dispatchMessage(MessageHandler handler, String argument1, String argument2, Long ... ", 1l,); ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to get start and end date of a year?

I have to use the Java Date class for this problem (it interfaces with something out of my control). How ... then iterate through each date? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Cannot make filter->forEach->collect in one stream?

I want to achieve something like this: items.stream() .filter(s-> s.contains("B")) .forEach(s-> s.setState(" ... Do I need 2 streams for that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Getting selected item from a JavaFX TableView

How do I get the selected item from a TableView in JavaFX? I am currently using ObservableList selectedItems = ... item in the selection model. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What is the easiest way to generate a String of n repeated characters?

Given a character c and a number n, how can I create a String that consists of n repetitions of c? Doing it ... that already does this for me? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to convert Mono<List<String>> into Flux<String>

I'm converting small project written in RxJava 1.x to Reactor 3.x. All is good, except that I could not find ... to convert it to Flux<String>. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - MessageBodyReader not found for media type=application/json

I have wrote a JAX-RS server and client both use Jersey. I want to sent a collection of my entities to client and ... : 0); return result; } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - FindBugs warning: Inefficient use of keySet iterator instead of entrySet iterator

Please refer to the following method : public Set<LIMSGridCell> getCellsInColumn(String columnIndex){ Map<String,LIMSGridCell ... (key) lookup." See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How can I concatenate a string within a loop in JSTL/JSP?

<c:forEach items="${myParams.items}" var="currentItem" varStatus="stat"> <c:set var="myVar" value="<c:out ... ... (Preferably not using Java) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - JRE on Android

This might sound like a stupid question, but google didn't help me. Is there a JRE available for Android? ... be JRE available for the Android? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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390 views

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java - Can't locate import javax.inject.Inject package

I'm trying to implement Dagger as a dependency injector in an IntelliJ project, but my code is failing on: ... package is not being found? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Is it possible to pass a password in Maven Deploy in the command line?

This is the way it currently works, and it's the Maven Deploy Plugin Usage pom.xml [...] < ... achieve mvn deploy -someUser -somePassword See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Ignore code coverage for unit tests in EclEmma

I have configured EclEmma not to instrument my unit tests which works fine. However, the editor still highlights the test ... How can I do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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167 views

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java - Does Files.createTempDirectory remove the directory after JVM exits normally?

Does Files.createTempDirectory remove the directory after JVM exits normally? Or do I need to manually ... temporary directory content? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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182 views

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java - increase server timeout in eclipse

I want to increase the server time out in eclipse but not sure how server is configured in my eclipse, I ... here I cannot find timeout settings See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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233 views

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java - How skip line in Intellij idea debug?

Suppose I have java code like this (only as Example): public void someMethod(){ int a = 3; int b = 2; // <-- ... "? P.S. I use Intellij Idea 12. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to differentiate when wait(long timeout) exit for notify or timeout?

Having this wait declaration: public final native void wait(long timeout) throws InterruptedException; It could exit by ... ) { //timeout } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Spring 3.0 inject files as resources

In my Spring 3.0 app, I have some resources in /WEB-INF/dir. At runtime I need some of them as an ... to inject them as a normal Resource? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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366 views

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java - How to execute mvn command using IntelliJ IDEA?

I am trying to add Oracle JDBC driver in my local Maven repo. I have found this link to do so. I ... execute mvn commands from IntelliJ IDEA? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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370 views

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java - Optional in Lombok

I have a class called Address which looks like this: @Value class Address { @NotNull String userId; @NotNull ... use lombok with Optional? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Does JUnit execute test cases sequentially?

In this post, I asked a small question as part of a bigger problem. Since I didn't get responses yet ... execute tests sequentially? Thank you See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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