java-examples | Java examples - of Java SE features | Runtime Evironment library

 by   jjenkov Java Version: Current License: No License

kandi X-RAY | java-examples Summary

kandi X-RAY | java-examples Summary

java-examples is a Java library typically used in Server, Runtime Evironment, Spring Boot, Maven, JavaFX, Hibernate applications. java-examples has no bugs, it has no vulnerabilities and it has low support. However java-examples build file is not available. You can download it from GitHub.

A set of Java examples - of Java SE features (core Java) and techniques. The Java examples are related to the Java tutorials at tutorials.jenkov.com . Many of these Java examples will be hard to understand without the corresponding tutorial explaining the topic and the examples.
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              java-examples has a low active ecosystem.
              It has 84 star(s) with 16 fork(s). There are 7 watchers for this library.
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              It had no major release in the last 6 months.
              java-examples has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of java-examples is current.

            kandi-Quality Quality

              java-examples has no bugs reported.

            kandi-Security Security

              java-examples has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              java-examples does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
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              Without a license, all rights are reserved, and you cannot use the library in your applications.

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              java-examples releases are not available. You will need to build from source code and install.
              java-examples has no build file. You will be need to create the build yourself to build the component from source.

            Top functions reviewed by kandi - BETA

            kandi has reviewed java-examples and discovered the below as its top functions. This is intended to give you an instant insight into java-examples implemented functionality, and help decide if they suit your requirements.
            • Main method
            • Checks if the lock is involved in a deadlock
            • Submits a subAgent to the foreground thread
            • Submits an agent to the background thread
            • Main entry point
            • Do nothing
            • Runs the lock
            • Tries to lock the two threads
            • Main thread
            • Try to lock the two threads
            • Main entry point
            • Entry point for testing
            • Continue executing the sub agent
            • Main method to run a blocking queue
            • Main method for testing
            • The main entry point
            • Runs the consumer
            • The main loop
            • Entry point for the application
            • Test program
            • Entry point for testing purposes
            • Runs the main thread
            • Run the main thread
            • Main method for testing
            • Entry point
            Get all kandi verified functions for this library.

            java-examples Key Features

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

            java-examples Examples and Code Snippets

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

            Community Discussions

            QUESTION

            What is the practical use of Stream.empty?
            Asked 2021-Apr-11 at 21:34

            Stream#empty returns an empty sequential Stream. From this tutorial, I learnt that an empty stream might be useful to avoid null pointer exceptions while callings methods with stream parameters. However, I am not able to think of an example that can help me understand this statement clearly.

            ...

            ANSWER

            Answered 2021-Apr-11 at 21:34

            Let's say you have a Stream with a flatMap operation containinig some logic, you want the possibility of calling Stream#empty if some condition is met

            Source https://stackoverflow.com/questions/67050183

            QUESTION

            Using Gstreamer for Android with JNA & gst1-java-core?
            Asked 2021-Mar-12 at 00:33

            Before we start allow me to just say that I know that it is possible to integrate Gstreamer into Android natively using C code as done in the Android Tutorials themselves.

            This question is not related to simply just getting Gstreamer running on Android but rather running it on Android using the pre-existing native Java wrapper library gst1-java-core alongside JNA inside of Android Studio in a new Native project. However, if Native C code is the only way do let me know if you have tried and failed what I'm trying to do.

            Lets begin.

            System Information:

            • OS: Linux Ubuntu 18.04
            • Android Studio Version: 4.1.2
            • Java version: 8
            • SDK version: 30 (targetting API 21)
            • NDK version: 21 (also tried 23)
            • Testing Device: Samsung Galaxy Tab S6 Lite (even though haven't gotten there yet)

            Process involved setting up a brand new project in Android Studio and choosing Native C++ as the Project Template followed by keeping everything else default including the toolchain. Once the project was built and finished it's Gradle business I did the usual git init and set it up in Git. Following that I downloaded and added the gst1-java-core-1.4.0.jar from the releases page to the "libs/" directly inside the "app/" folder.

            Once I had done so I modified the build.gradle file in the app directory to match this Gradle Gist.

            This was then naturally followed by a Gradle sync and when that had completed correctly I went to my MainActivity.java and added two lines of code total. First at the top:

            ...

            ANSWER

            Answered 2021-Mar-12 at 00:33

            So it was my mistake not knowing enough about Android and the sub systems to know that even though Android is primarily developed in Java it does not support running Java "natively". This means that JNI is not relevant as according to Wikipedia JNI is:

            In software design, the Java Native Interface is a foreign function interface programming framework that enables Java code running in a Java virtual machine to call and be called by native applications and libraries written in other languages such as C, C++ and assembly

            So in saying that - because Android does not run a JVM but rather it runs Native C on a Linux Kernel this means that trying to integrate a "java wrapper" through the JNI is not currently possible on Android.

            Because of this - the common solution and following Gstreamers official tutorials appears to currently be the only way to use Gstreamer in Android.

            I only have myself to blame for thinking that everyone else had just "missed" JNI and gst1-java-core and that I somehow knew better than even the Gstreamer official website itself.

            I felt like answering this question though because if anyone else goes down the wrong track I can now officially suggest to following the official tutorials and create an Android App with Native support so that you can compile and integrate the C code directly from Gstreamer and then make your app work like that.

            I can currently say that following the above paragraph's advice resulted in me creating a working Android application with a Gstreamer live stream currently up and running using a custom pipeline. I'm not going to say it was easy; because it isn't; especially if you are not great at C programming. But it is definitely doable and the tutorials are good.

            Source https://stackoverflow.com/questions/66378968

            QUESTION

            Get all values available in a Combobox in Vaadin
            Asked 2021-Feb-01 at 10:47

            There are several comboboxes in my code which I fill with values via

            ...

            ANSWER

            Answered 2021-Feb-01 at 10:47

            If you use combobox.setItems(items); then ComboBox will automatically create a ListDataProvider out of those items, which means that you could the following

            Source https://stackoverflow.com/questions/65990652

            QUESTION

            Vaadin CustomField with Tag has no Label
            Asked 2021-Jan-21 at 09:41

            In my Vaadin (14.4.6) application I've got a CustomField like this one: https://vaadin.com/components/vaadin-custom-field/java-examples

            When I add a @Tag annotation to my CustomField implementation, the label and error elements are gone.

            This is how the HTML is like in Firefox without the @Tag annotation:

            This is how the HTML is like in Firefox with the @Tag annotation:

            Is there a way to set a custom tag name at a CustomField without losing the label and the error elements?

            ...

            ANSWER

            Answered 2021-Jan-21 at 09:41

            The CustomField is linked to a webcomponent with the Tag vaadin-custom-field so if you add a tag it will use a different webcomponent, in your case chart-field.

            Why do you want to change the tag?

            Source https://stackoverflow.com/questions/65824429

            QUESTION

            Joining all subsets within a stream in Java optionals
            Asked 2020-Sep-22 at 20:28

            This is the original piece of code:

            ...

            ANSWER

            Answered 2020-Sep-22 at 13:15

            Collection::stream does not return an Optional, so you should not use flatMap here. You should keep using map on the optional.

            .map(Collection::stream) gives you an Optional>. You seem to be trying to call the stream's map and collect methods on this. But you need to first call Optional.map before you can do that.

            You should also use Optional.ofNullable if registration could be null:

            Source https://stackoverflow.com/questions/64010190

            QUESTION

            how to define an ArrayAdapter for ListView outside oncreate due to update in Kotlin?
            Asked 2020-May-26 at 23:29

            I try to get a ListView runnng with update after changing the listItems in Kotlin. The simple examples I find here are working as long as I stay inside the activity_main. But trying to change items in a function i do not get the defined adapter.

            my code:

            ...

            ANSWER

            Answered 2020-May-26 at 23:29

            Move the declaration for the adapter outside your onCreate function. You should then be able to access it from myfkt()

            Source https://stackoverflow.com/questions/62032772

            QUESTION

            Vaadin 14: Mark error message at TextField as warning
            Asked 2020-Apr-26 at 19:44

            with Vaadin 14.1.23 TextFields I would like to differentiate visually between red error messages (e.g. "This value is too big.") and yellow warnings (e.g. "System will round your input to two decimals."). And optionally maybe blue info messages.

            Therefore I created a TextField with a validator like in this example ( https://vaadin.com/components/vaadin-text-field/java-examples/validation ): When you type "1" into the field with label "Min 2 characters" then the field gets red and shows an error: "Minimum 2 characters".

            How about showing a (yellow) warning message like this?

            What I tried is this: In the apply method of my validator I created a validation result with ErrorLevel WARNING like this:

            ...

            ANSWER

            Answered 2020-Apr-26 at 19:44

            There is a way to achieve this effect.

            First you need to create theme for vaadin-text-field. Create text-field-theme.css file in frontend/styles folder with content:

            Source https://stackoverflow.com/questions/61030840

            QUESTION

            Set an icon on a Vaadin Flow Tab
            Asked 2020-Mar-24 at 08:31

            In Vaadin 8 you could set an icon on a Tab (of TabSheet):

            ...

            ANSWER

            Answered 2020-Mar-22 at 10:10

            That's possible. Use the constructor new Tab(Components...) or add your icon using Tab#add(Component...). The components will be shown in header of tab. For example, you could pass a HorizontalLayout that contains an icon and a text component.

            Have a look at this Vaadin tab component demo, paragraph "Tabs with custom content".

            Source https://stackoverflow.com/questions/60773212

            QUESTION

            Vaadin 14 Time Picker - align centered
            Asked 2020-Mar-19 at 14:55

            with Vaadin 14(.1.19) comes this Time Picker component: https://vaadin.com/components/vaadin-time-picker/java-examples

            This is how it looks like (when it's read-only):

            How can I get this Time Picker to show the time centered like this (this is a screenshot of a manual manipulation in the browser (setting text-align:center directly at the embedded input field), not a programmed solution)?

            I tried to set the text-align property in the Java code without effect:

            ...

            ANSWER

            Answered 2020-Mar-18 at 15:54

            You will need to change the CSS within the shadow DOM of TimePicker's TextField value part, we use theme attribute as additional selector in order to not to theme all the text fields:

            Source https://stackoverflow.com/questions/60692643

            QUESTION

            Why is Streams.allMatch(in Java8) trying to evaluate all the expressions even if the value can be determined midway?
            Asked 2020-Mar-12 at 08:24
            Consider this snippet - ...

            ANSWER

            Answered 2020-Mar-11 at 18:10

            This has nothing to do with the allMatch, and everything to do with the fact that all arguments to a method get evaluated before that method is called, under all circumstances. All arguments to Stream.of, in this particular case, get evaluated before Stream.of is called.

            If you really wanted something different, the closest thing to the behavior you want would look like

            Source https://stackoverflow.com/questions/60641257

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

            Vulnerabilities

            No vulnerabilities reported

            Install java-examples

            You can download it from GitHub.
            You can use java-examples 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-examples 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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            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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