java-tutorial | old driver has accumulated ten years

 by   dunwu Java Version: Current License: CC-BY-SA-4.0

kandi X-RAY | java-tutorial Summary

kandi X-RAY | java-tutorial Summary

java-tutorial is a Java library. java-tutorial has no bugs, it has no vulnerabilities, it has build file available, it has a Strong Copyleft License and it has medium support. You can download it from GitHub.

:coffee: The old driver has accumulated ten years in the field of Java technology.
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              java-tutorial has a medium active ecosystem.
              It has 1596 star(s) with 241 fork(s). There are 38 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              There are 1 open issues and 8 have been closed. On average issues are closed in 32 days. There are 12 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of java-tutorial is current.

            kandi-Quality Quality

              java-tutorial has 0 bugs and 0 code smells.

            kandi-Security Security

              java-tutorial has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              java-tutorial code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              java-tutorial is licensed under the CC-BY-SA-4.0 License. This license is Strong Copyleft.
              Strong Copyleft licenses enforce sharing, and you can use them when creating open source projects.

            kandi-Reuse Reuse

              java-tutorial releases are not available. You will need to build from source code and install.
              Build file is available. You can build the component from source.
              java-tutorial saves you 11589 person hours of effort in developing the same functionality from scratch.
              It has 23435 lines of code, 810 functions and 505 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed java-tutorial and discovered the below as its top functions. This is intended to give you an instant insight into java-tutorial implemented functionality, and help decide if they suit your requirements.
            • Gets the body of the query .
            • Returns a string representation of this page .
            • Relaxises all edges .
            • Fill the builder with image params
            • Receive email .
            • Locates an IP address .
            • Execute a servlet request
            • Sets IP .
            • Gets the token .
            • validate upload policy
            Get all kandi verified functions for this library.

            java-tutorial Key Features

            No Key Features are available at this moment for java-tutorial.

            java-tutorial Examples and Code Snippets

            No Code Snippets are available at this moment for java-tutorial.

            Community Discussions

            QUESTION

            Background removal from images with OpenCV in Android
            Asked 2021-May-14 at 12:25

            I want to remove image background with Open CV in Android. Code is working fine but output quality not as per expectation. I followed java documentation for code reference:

            https://opencv-java-tutorials.readthedocs.io/en/latest/07-image-segmentation.html

            Thanks

            original Image

            My output Expected output

            My code snippet in Android:

            ...

            ANSWER

            Answered 2021-May-11 at 02:14

            The task, as you have seen, is not trivial at all. OpenCV has a segmentation algorithm called "GrabCut" that tries to solve this particular problem. The algorithm is pretty good at classifying background and foreground pixels, however it needs very specific information to work. It can operate on two modes:

            • 1st Mode (Mask Mode): Using a Binary Mask (same size as the original input) where 100% definite background pixels are marked, as well as 100% definite foreground pixels. You don't have to mark every pixel on the image, just a region where you are sure the algorithm will find either class of pixels.

            • 2nd Mode (Foreground ROI): Using a bounding box that encloses 100% definite foreground pixels.

            Now, I use the notation "100% definitive" to label those pixels you are 100% sure they correspond to either the background of foreground. The algorithm classifies the pixels in four possible classes: "Definite Background", "Probable Background", "Definite Foreground" and "Probable Foreground". It will predict both Probable Background and Probable Foreground pixels, but it needs a priori information of where to find at least "Definitive Foreground" pixels.

            With that said, we can use GrabCut in its 2nd mode (Rectangle ROI) to try an segment the input image . We can try and get a first, rough, binary mask of the input. This will mark where we are sure the algorithm can find foreground pixels. We will feed this rough mask to the algorithm and check out the results. Now, the method is not easy and its automation not straightforward, there's some manual information we will set that work particularly well for this input image. I don't know the Java implementation of OpenCV, so I'm giving you the solution for Python. Hopefully you will be able to port it. This is the general outline of the algorithm:

            1. Get a first rough mask of the foreground object via thresholding
            2. Detect contours on the rough mask to retrieve a bounding rectangle
            3. The bounding rectangle will serve as input ROI for the GrabCut algorithm
            4. Set the parameters needed for the GrabCut algorithm
            5. Clean the segmentation mask obtained by GrabCut
            6. Use the segmentation mask to finally segment the foreground object

            This is the code:

            Source https://stackoverflow.com/questions/67400380

            QUESTION

            java.home variable does not point to a JDK Source
            Asked 2020-Oct-23 at 20:20

            I have used java on many IDEs but I simply cannot on VS Code/linux. Before you tell me to just google it/remove my post, I've already read the similar stack overflow question, java tutorial VS Code, and setting java.home by oracle.The actual stack overflow post wasn't even answered even though it was marked solved.

            I am running VS Code on windows and running all my coding in VSCode in a WSL, basically Ubuntu for windows. I installed the Java Extension Pack. I installed the jdk in my root directory and defined the path in settings.json as such

            ...

            ANSWER

            Answered 2020-Jun-09 at 20:06

            I figured it out, it wasn't installed correctly. I copied the windows installation jdk rather than installing the .rpm jdk via Alien. After proper installation it was installed in /usr/java/jdk-14.0.1, so I used that as the path.

            Source https://stackoverflow.com/questions/62180170

            QUESTION

            VS Code & WSL2 - specify Java Language Level to 1.8
            Asked 2020-Oct-08 at 23:57

            I'm using VS Code in WSL2 and have installed a bunch of Java Extensions as per this link - normal Java programs work well - able to Run & Debug from VS Code.

            Although when I start using Java 8 specific features like Lambda, it starts complaining about the source level for Java

            I've the following environment variables configured for Java Home

            What property should be specified in Settings to determine the source level as 1.8 and not lower !

            Edit: The bottom blue bar says the current Java Runtime is J2SE1.5 for some reason. See Attached

            On clicking, it asks to add the following property: java.configuration.runtimes and so I've added the following in my WSL2 settings for VS Code - still no effect !

            ...

            ANSWER

            Answered 2020-Jun-05 at 15:21

            I use the spring framework with gradle, lombok plugin and skdman (aside gradle, for maven is as good as well, I recommend use'em, they are all great), but I believe my configurations can be useful for everyone, so here it goes ...

            One thing I may add thought its I got strange errors using plugins with command line gradle wich was corrected when i start using the vscode plugins interfaces only, therefor i would recommend give it a try and use the plugins buttons, if you have not done it yet.

            At launch.json I have the following debug configurations:

            Source https://stackoverflow.com/questions/62128187

            QUESTION

            Set target java version when build OpenCV with brew
            Asked 2020-Jun-13 at 07:42

            I'm using brew to build OpenCV with java support following this tutorial. After built successful I got the error class file has wrong version 57.0, should be 52.0 when using. I'm using OpenJDK 8, how can I target the build to this version. Thank you.

            ...

            ANSWER

            Answered 2020-Jun-13 at 07:42

            Found the answer, put the extra -DOPENCV_JAVA_TARGET_VERSION=1.8 args to cmake in brew formula.

            Source https://stackoverflow.com/questions/62115757

            QUESTION

            Escaping references - how to legitimately update object data?
            Asked 2020-May-17 at 06:29

            Been reading and watching escaping references and I get the idea of why and how to fix it, but I'm still confused on one thing...

            What if the data does need to be updated? For example, I copied the code from the blog post down below and also added an additional class member of "email". Say the customer changed his email address. If this structure does not allow the object to be modified, how it the update done then?

            Interface:

            ...

            ANSWER

            Answered 2020-May-17 at 06:29

            Java solves both issues presented in that article:

            • Shallowly immutable data holders ➙ Records
            • Read-only maps ➙ Map.copyOf

            Leaking references is an important issue. But that article’s solution seems overwrought to me in its approach.

            • Certainly creating the CustomerRecords to hold a map seems redundant and useless. Instead, use a non-modifiable map (discussed below).
            • As for a "read-only" interface as view onto a mutable object, this might make sense in some limited situations. But you might also wreak havoc when the supposedly immutable "CustomerReadOnly" returns a different email address on the second call to "getEmail" after an update. Trying to be simultaneously both mutable and immutable is unwise. To handle immutability, instead make an immutable copy of the mutable state.
            Records

            The Records feature being previewed in Java 14 and previewed again in Java 15, and discussed by Brian Goetz, provide for shallowly immutable data holders. This special kind of class handles automatically the constructor, “getter” accessors, equals, hashCode, and toString methods behind the scenes. So your example class Customer turns into this utterly simple code:

            Source https://stackoverflow.com/questions/61764986

            QUESTION

            How to Run Java Module class (java 9 jigsaw project) with third party library (jar files)?
            Asked 2020-Apr-12 at 11:02

            Right now I'm trying to develop a Java project with pure java (no builtscript). I'm implementing the module concept from Java 9. I'm having a trouble when it comes to run a Java project (main class) with additional jar file (third party library). I have no trouble when compiling but when I try to run the java it couldn't run as expected.

            I could compile this project by executing this command (javaFiles.txt contains my java files that wanted to be compiled):

            ...

            ANSWER

            Answered 2020-Feb-27 at 07:49

            The path separator in all non-Windows systems is colon (:), not semicolon (;). You need to change this:

            Source https://stackoverflow.com/questions/60425887

            QUESTION

            what does `PS` command mean in vscode terminal on windows?
            Asked 2019-Dec-06 at 22:29

            I am trying to reproduce this post.

            this is a classic hello world in java, with additional package app;

            ...

            ANSWER

            Answered 2019-Dec-06 at 22:29

            The PS indicates it is a powershell prompt.

            Powershell code cannot be run inside a command.exe prompt.

            Source https://stackoverflow.com/questions/59221042

            QUESTION

            Java Regex - capture string with single dollar, but not when it has two successive ones
            Asked 2019-Nov-13 at 11:27

            I posted this question earlier.

            But that wasn't quite the end of it. All the rules that applied there still apply.

            So the strings:

            • "%ABC%" would yield ABC as a result (capture stuff between percent signs)
            • as would "$ABC." (capture stuff after $, giving up when another dollar or dot appears)
            • "$ABC$XYZ" would too, and also give XYZ as a result.

            To add a bit more to this:

            • "${ABC}" should yield ABC too. (ignore curly braces if present - non capture chars perhaps?).
            • if you have two successive dollar signs, such as "$$EFG", or "$${EFG}",
              that should not appear in a regex result. (This is where either numbered or named back- references come into play - and the reason I contemplated them as non-capture groups). As I understand it, a group becomes a non-capture group with this syntax (?:).

            1) Can I say the % or $ is a non-capture group and reference that by number? Or do only capture groups get allocated numbers?

            2) What is the order of the numbering, if you have ((A) (B) (C)). Is the outer group 1, A 2, B 3 C 4?

            I have been look at named groups. Saw the syntax mentioned here

            (?capturing text) to define a named group "name"

            \k to backreference a named group "name"

            3) Not sure if a non-capture group can be named in Java? Can someone elucidate?

            • More info here on non capture groups.
            • More info here on lookbehinds
            • Similar answer to a question here, but didn't quite get me what I wanted. Not sure if there is a back-reference issue in Java.
            • Similar question here. But could not get my head around the working version to apply to this.

            I have used the exact same Java I had in my original question, except for:

            ...

            ANSWER

            Answered 2019-Nov-13 at 11:27

            You may write a little bit more verbose regex with multiple capturing groups and only grab those that are not null, or plainly concatenate the found group values since there will be always only one of them initialized upon each match:

            Source https://stackoverflow.com/questions/58827094

            QUESTION

            Java regex (java.util.regex). Search for dollar sign
            Asked 2019-Nov-12 at 16:01

            I have a search string. When it contains a dollar symbol, I want to capture all characters thereafter, but not include the dot, or a subsequent dollar symbol.. The latter would constitute a subsequent match. So for either of these search strings...:

            ...

            ANSWER

            Answered 2019-Nov-12 at 15:34

            QUESTION

            What is the basic structure of a Julia Program?
            Asked 2019-Nov-01 at 03:24

            What are the basic structural aspects that should exist in Julia code I am writing? I will link some other language's implementation of this for reference.

            I am looking for officially sanctioned components for the language itself, not one's opinion on best practices.

            Basic Structure of a C Program

            Basic Structure of a Java Program

            ...

            ANSWER

            Answered 2019-Oct-31 at 16:18

            First off, if you are new to Julia and the structure of writing a program therein, I suggest you check out the Official Julia Docs for a great explanation as to how to get started writing code in Julia.

            If you are coming from a language like Java and read the documentation linked above, you may be a little confused as to where the docs on the structure of a Julia program are. To my understanding, that doc does not exist for a few reasons.

            Julia as a language imposes very little on you as the programmer. This can lead to a bit of uncertainty and doubt with all of the newfound freedom. There are some basic structures that should be followed, despite the flexibility the language provides:

            1. using and import statements are generally made at the very top of the file.
            2. That's about it! (Feel free to edit if you think there's more).

            It's also worth checking out the Julia Style Guide for things like:

            Write functions, not just scripts: Writing code as a series of steps at the top level is a quick way to get started solving a problem, but you should try to divide a program into functions as soon as possible. Functions are more reusable and testable, and clarify what steps are being done and what their inputs and outputs are. Furthermore, code inside functions tends to run much faster than the top-level code, due to how Julia's compiler works.

            In general, Julia is flexible. There are very few things that you have to include in your program.

            It's important to designate the difference between writing a simple Julia script and creating a project in Julia.

            While there are limited structural suggestions for creating a simple script, there are a number of suggestions related to how one can structure a Julia Project. In fact, many of these aspects are built into Julia itself! You can find out more about creating Julia Projects (which should have a similar if not the same structure as Julia packages) here.

            Note: If you are trying to find the structure of a Package in Julia, a great resource would be PackageTemplate.jl.

            Source https://stackoverflow.com/questions/58646668

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install java-tutorial

            You can download it from GitHub.
            You can use java-tutorial like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the java-tutorial component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

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