Recent questions tagged JAVA

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java - Why can we change the unmodifiable list if we have the original one?

By looking at the code of Collections class, i got to know that when we are using the method unmodifiableList(List ... 't create a new object? 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 - Lambda vs anonymous inner class performance: reducing the load on the ClassLoader?

I would like to know how big of a benefit lambdas have in Java 8. I agree that it might be more ... 8 Lambdas Hacking with Venkat Subramaniam. 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 - Log restful endpoints on container startup in a Spring application

I've a Spring application that expose restful endpoints through @RequestMapping annotation in Controller classes. I ... for logging. Thanks. 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 - Import javax.vecmath

I would like to use javax.vecmath in my Java program but unfortunately it says: The import javax.vecmath cannot ... m on Ubuntu/Eclipse Galileo. 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 compile mavenized OSGi 4.3 bundle with OpenJDK 7?

i am trying to compile my OSGi bundle against OSGi specification 4.3 using OpenJDK7 but i am getting error: [ ... it working with OpenJDK 7? 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 - Media projections require a foreground service of type ServiceInfo.FOREGROUND_SERVICE TYPE_MEDIA_PROJECTION in Android Pie and Q

any body knows why this error occur, Media projections require a foreground service of type ServiceInfo. ... , mResultData); } 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 - Changing the Action bar icon

I'm currently implementing theme support for my application and a part of it is changing the action bar app ... no action bar Sherlock stuff. 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 - Unable to parse Json array using Gson

I have this json array: [ { "id":18, "city":"??????", "street":"??????? 1", "zipcode": ... com.deliveries.models.MapData What am i doing wrong? 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 - Remove Swing Component Using Validate or Revalidate

Whenever I remove and add swing components from say JPanel, shall I perform call on validate or revalidate? 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 - Swing JTable - Highlight selected cell in a different color from rest of the selected row?

I have a basic swing JTable and the requirement is that when clicked on any cell, the entire row should be ... what I might need to do? See Question&Answers more detail:os...

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

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623 views

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java - Spring, redirect to external url using POST

In the following Spring 3.1 action, I've to do some stuff and add attribute to a POST request, and then ... 's mandatory from the external URL. See Question&Answers more detail:os...

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

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303 views

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java - Differences between `copy(List<? super T> dest, List<? extends T> src) ` and `copy(List<T> dest, List<? extends T> src)`

I am trying to learn Java Generics wildcard by reading the following: http://www.angelikalanger.com/ ... Examples would be appreciated. See Question&Answers more detail:os...

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

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275 views

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java - how can i store output voice to an audio file in freetts

I am trying to use freetts for a simple java application but i am facing a problem, can anyone tell me how ... file on my disk. Thanks Pranay See Question&Answers more detail:os...

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

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114 views

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java - Process requires redirected input

I have a UNIX native executable that requires the arguments to be fed in like this prog.exe < foo.txt. foo.txt ... "); does not work. Thanks! See Question&Answers more detail:os...

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

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281 views

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java - JavaFX graphics "blurred" or anti-aliased? (No effects used)

I'm creating some some shapes and everything seems to be blurred, like anti-aliased despite no effects applied. ... disable on Stage or Scene? See Question&Answers more detail:os...

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

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324 views

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java - Centrally secure all tomcat webapps using BASIC authentication

I have a Tomcat 6 server containing three webapps: a custom one as ROOT, Jenkins and Nexus. I would ... or configuring the webapps themselves? See Question&Answers more detail:os...

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

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110 views

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java - How to insert values in two dimensional array programmatically?

I want to do this dynamically in java. I know how to insert values in single dimensional array. I am bit confused in two ... 1", "maroon", } }; 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 - IntelliJ IDEA: Tomcat 8.5.13 and 9.0.0.M19 — Error during artifact deployment. See server log for details

I can't understand what happened. There was no problem 2 days ago and now I can't deploy my applications. ... ? What are the possible solutions? See Question&Answers more detail:os...

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

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127 views

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java - Create stream of streams from one long stream

I want to split a single Stream into a Stream of Streams based on the contents of the Streams. The resulting the ... as a List of Lists first. 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 to serialize ObservableList

I am working on a javaFx project where we have to use ObservableList to add Listners. ObservableList includes ... finished with exit code 0 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 - jEditorPane as a web browser

I am creating a web browser in Java. In this browser I am using JEditorPane for Browser Window. I am using "setPage( ... URL: " + url); } } See Question&Answers more detail:os...

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

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122 views

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java - How to mock objects created inside method?

Consider this public class UserManager { private final CrudService crudService; @Inject public UserManager(@Nonnull final ... Any ideas? See Question&Answers more detail:os...

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

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119 views

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java - Getting a double out of a string

i have a string containing the following: "Did It Your Way, 11.95 The History of Scotland, 14.50, Learn ... get the doubles from this 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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261 views

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java - Does JFrame.setExtendedState(MAXIMIZED_BOTH) work with undecorated frames?

The following Swing code doesn't work correctly on my machine or my co-workers machines (all Windows XP & ... .NORMAL : JFrame.MAXIMIZED_BOTH); See Question&Answers more detail:os...

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

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396 views

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java - Invalid escape sequence (valid ones are f " ' )

I have a problem with a regex in java. When I try to use this regex: ^(?:(?:([01]?d|2[0-3]):)? ... I hope someone can help me with this. Thanks See Question&Answers more detail:os...

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

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224 views

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java - How to compute the hash code for a stream in the same way as List.hashCode()

I just realized that implementing the following algorithm to compute the hash code for a stream is not possible using ... it to a List first. See Question&Answers more detail:os...

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

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202 views

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java - Use READ BINARY to read more than 256 bytes

I am trying to read a smartcard(German Gesundheitskarte) using javax.smartcardio In the definition of the EF " ... | German Specification Part 2 See Question&Answers more detail:os...

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

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287 views

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java - Uploading File Returns 403 Error - Spring MVC

In my Spring MVC project I am trying to upload a file via a simple form. HTML Form: <form method="POST" enctype ... get no 403 .csrf().disable() See Question&Answers more detail:os...

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

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