Recent questions tagged Java

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java - Create two threads, one display odd & other even numbers

I'm trying to create two threads, one thread display even integers from 0 to 10, one thread display odd integers from ... out.println(i); } } } 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 do I force a Spring Boot JVM into UTC time zone?

I saw Force Java timezone as GMT/UTC I tried mvn spring-boot:run -Dexec.args="-Duser.timezone=GMT" mvn spring-boot ... Boot 1.5.19, Java 8 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 - WebDriver remove element from page

I'm using Selenium WebDriver(ChromeDriver). I need to remove some elements from page after processing(from DOM ... Please show an example. 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 - elasticsearch - Return the tokens of a field

How can I have the tokens of a particular field returned in the result For example, A GET request curl -XGET ... ' field included in the 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 - How does the JVM guarantee execution of the finally block?

This question is aimed at how the JVM is able to guarantee the execution of a finally block (provided the ... how this process actually happens? 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 - TaskScheduler, @Scheduled and quartz

Is there a way to have @Scheduled with quartz as the underlying scheduler? Two things that I can think of, but ... and is there another option? 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 retrieve spring data repository instance for given domain class?

Given the list of all spring data repositories in some class Bar: @Autowired private List<Repository> repositories; How ... <Foo, 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 - If the JVM keeps moving objects around when it does GC, how does it resolve references?

I'm reading on JVM tuning, and it occurred to me that the JVM keeps moving objects around when it ... optimized algorithm or structure used. 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 make short and long-lived objects a difference in garbage collection?

I've often read that in the Sun JVM short-lived objects ("relatively new objects") can be garbage ... a general garbage collection principle? 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 - Find the Kth least number for expression (2^x)*(3^y)*(5^z)

In the expression 2x * 3y * 5z The x, y and z can take non negative integer value (>=0). So the ... algorithm. This is an interview question. 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 tell if Proguard has done its job

I downloaded proguard encapsulated in a zip file and unpacked it onto my hard disk. I did not install ... apk includes proguard's obfuscations? 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 - No qualifying bean of type [javax.persistence.EntityManager]

I am attempting to build a brand new Spring Framework 4.0 project without all of the magical gradle ... HibernateExceptionTranslator(); } } 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 a BufferedImage from a SVG?

I am using Batik to handle SVG images. Is there any way to get a java.awt.image.BufferedImage from a SVG- ... want to have the temporary file. 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 - Action Bar Home Button not functional with nested PreferenceScreen

I found a workaround to actually enable the ActionBar home button on the nested PreferenceScreen... however it doesn' ... true); return false; } 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 - Android - Error:Execution failed for task ':app:mergeDebugResources'

please help me! here is error says: Error:Execution failed for task ':app:mergeDebugResources'. Error: java. ... { delete rootProject.buildDir } 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 - REST HTTP Authentication - How?

So, I'm developing a REST webservice using RESTeasy and Google App Engine. My question isn't related to GAE ... I choosing the right approaches? 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 - Maven: Include resources into JAR

I have some terrible beaviour. I have the following Maven configuration: <project xmlns="http://maven.apache.org/POM/4.0 ... > <version>1.4.0</version> </dependency> <dependency&gt...

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

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java - Expected CSRF token not found. Has your session expired 403

I'm trying to write my test spring security application with mkyong examples. Spring Security: 4.0.0.RC1 Spring: 4. ... has to do with the csrf. 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 Void really uninstantiable?

The javadoc for Void says: The Void class is an uninstantiable placeholder class to hold a reference to the ... make Void truly uninstantiable? 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 - Bulk insert or update with Hibernate?

I need to consume a rather large amounts of data from a daily CSV file. The CSV contains around 120K ... will it support commit/rollbacks? See Question&Answers more detail:os...

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

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447 views

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java - JMeter latency vs load time(sample time)

I was running a test on my HTTP server and the transfer speed went really slow when I switched the server ... the difference between those two? See Question&Answers more detail:os...

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

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199 views

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java - Merging two Maps

I have two maps whose keys are Strings and whose values are Set<MyObject>. Given two Maps, what is the ... we can make these Maps SortedMaps. See Question&Answers more detail:os...

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

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378 views

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java - Read integers separated with whitespace into int[] array

I read line with BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); reader.readLine(); ... line solution if possible. 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 old entity value in @HandleBeforeSave event to determine if a property is changed or not?

I'm trying to get the old entity in a @HandleBeforeSave event. @Component @RepositoryEventHandler(Customer.class) ... perform some action. 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 8 - Switching from Rhino to Nashorn

I have a Java 7 project which makes a lot of use of Javascript for scripting various features. Until now I ... are not supported by Nashorn? See Question&Answers more detail:os...

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

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241 views

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java - Extracting Android .apk and reading contents of XML file in res/layout

I am trying to reverse engineer an existing android app and understand how a particular UI is constructed. I've ... back to text based markup? 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 - Jackson's @JsonView, @JsonFilter and Spring

Can one use the Jackson @JsonView and @JsonFilter annotations to modify the JSON returned by a Spring MVC ... was requesting the data. See Question&Answers more detail:os...

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

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357 views

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java - Gradle build doesn't download dependencies

After running gradle build in the root directory of my web app, the spring security dependency declared in build. ... the gradle init command in See Question&Answers more detail:os...

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

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