Recent questions tagged java

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java - Junit + getResourceAsStream Returning Null

Not sure how this is possible. I re-read up on getResourceAsStream and it's always returning null. InputStream ... the right path? 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 - How do I use generics with an array of Classes?

I want to create an array of Classes, each representing a type that is available in the system I'm building. All ... way to do this with arrays? 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 maximize a JFrame through code?

How to maximize a JFrame through code? 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 ResponseStatusException does not return reason

I have a very simple @RestController, and I'm trying to set a custom error message. But for some reason, the ... is never set on the response. 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 groovy have an easy way to get a filename without the extension?

Say I have something like this: new File("test").eachFile() { file-> println file.getName() } This prints the ... am I back in regex land?) 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 does "Can be package local" mean? (IDEA Inspection)

I used IntelliJ for "Inspect Code", and one of its results is: ??Problem synopsis ?????Can be package local (at line ... beat log", e ); } } } 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 - Use custom setter in Lombok's builder

I have a custom setter in my Lombok-based POJO: @Data @Builder public class User { private static final ... builder use my custom setter? 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 - Convert double to Int, rounded down

How to convert a double value to int doing the following: Double If x = 4.97542. Convert to int x = 4. ... , the answer is always rounding down. 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 does the Double.valueof javadoc say it caches values, when it doesn't?

In OpenJDK, for the method: public static Double valueOf(double d) The javadoc says: Returns a Double instance ... What's going on here? 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 will the version be when I don't specify it in the Maven's pom.xml?

Recently I wrote a project with maven, but I have a question about the version in maven pom.xml. If I write such ... project use foo-bar-1.0.0 See Question&Answers more detail:os...

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

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java - Android Studio layout editor cannot render custom views

In Android Studio, the layout editor cannot preview custom views in xml. Very simple example: public class MyCustomView ... 's wrong with 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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java - no target device found android studio 2.1.1

i'm using android studio 2.1.1 in ubuntu 14.04.Now my question is,i want to run the program through my ... help me to solve this problem.. 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 - Javadoc linking to a class in another package

I have two packages, Shapes and Fruits: com.myproject.Shapes. Circle Square Triangle com.myproject.Fruits. Apple ... syntax should be? 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 - Code for Variations with repetition (combinatorics)?

Does anyone have Java code for generating all VARIATIONS WITH REPETITION? There are plenty of permutation and combination ... BBA, BBB 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 - Spring Security 3.2.1 Multiple login forms with distinct WebSecurityConfigurerAdapters

I'm using Spring Security 3.2.1.RELEASE with Spring MVC 4.0.4.RELEASE I'm trying to setup Spring Security for ... ("/admin_signin"); } } } 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 JLabel text change on the running application

I have a Swing window which contains a button a text box and a JLabel named as flag. According to the input ... achieve this in the same window? 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 best way to hide the keystore password in Android?

I'm new to Android development and implementing SSLSockets. After doing some digging I was able to setup a ... .getTrustManagers(), null); 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 @Inject my DAO in a Custom Apache Shiro AuthorizingRealm

I'm trying to inject my UserDAO inside my custom AuthorizingRealm that Apache Shiro is using but... I get ... and inject my UserDAO properly? 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 capture an image in android with coordinates

Am new to android , and I would like place my problem in-front of you,, I would like to capture an image between ... me out from this logic.... 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 - javax.smartcardio - javadocs

I'm studying the javax.smartcardio classes. I'm using eclipse 3.6 and I have JDK 6 SE. I can use ... Eclipse to the javadocs for smartcardio? 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 - Create a class to connect to any database using jdbc

I am trying to design a Java swing application. I want to experiment and use an MVC type of architecture whereby ... and display on the screen. 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 Latitude and Longitude 0.0 in Android M

I am suffering from the problem of getting value 0.0 as latitude and longitude in Android Marshmallow (API 23) i ... any kind of help here. 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 - Speech recognition in Android

I am working on speech recognition and need some sample programs. Can anyone guide 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 - Spring data jpa detached entity

I started to work on a Spring Boot application using Spring Data JPA to setup a ManyToMany relationship between ... saving the user 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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java - How to access Jersey resource secured by @RolesAllowed

We were testing a REST webservice developed in jersey through postman rest client. It is a POST method and ... specified role via rest client. 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 - Univocity - How to return one bean per row using iterator style?

Introduction I am building a process to merge a few big sorted csv files. I am currently looking into using ... (fileReader, bean); } } 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 TouchImageView works?

I have good working TouchImageView and i want to know how does it work in a code : What i just want to ... bmHeight = dr.getIntrinsicHeight(); } 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 - Understanding libgdx

I understand that it is a framework; even more an open-source cross-platform game development library. I went to the libgdx ... () { } } </code> See Question&Answers more detail:os...

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

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