docker commands

Here is a list of docker commands.

Child commands

Command	Description
docker attach	Attach local standard input, output, and error streams to a running container
docker build	Build an image from a Dockerfile
docker builder	Manage builds
docker checkpoint	Manage checkpoints
docker commit	Create a new image from a container’s changes
docker config	Manage Docker configs
docker container	Manage containers
docker context	Manage contexts
docker cp	Copy files/folders between a container and the local filesystem
docker create	Create a new container
docker deploy	Deploy a new stack or update an existing stack
docker diff	Inspect changes to files or directories on a container’s filesystem
docker engine	Manage the docker engine
docker events	Get real time events from the server
docker exec	Run a command in a running container
docker export	Export a container’s filesystem as a tar archive
docker history	Show the history of an image
docker image	Manage images
docker images	List images
docker import	Import the contents from a tarball to create a filesystem image
docker info	Display system-wide information
docker inspect	Return low-level information on Docker objects
docker kill	Kill one or more running containers
docker load	Load an image from a tar archive or STDIN
docker login	Log in to a Docker registry
docker logout	Log out from a Docker registry
docker logs	Fetch the logs of a container
docker manifest	Manage Docker image manifests and manifest lists
docker network	Manage networks
docker node	Manage Swarm nodes
docker pause	Pause all processes within one or more containers
docker plugin	Manage plugins
docker port	List port mappings or a specific mapping for the container
docker ps	List containers
docker pull	Pull an image or a repository from a registry
docker push	Push an image or a repository to a registry
docker rename	Rename a container
docker restart	Restart one or more containers
docker rm	Remove one or more containers
docker rmi	Remove one or more images
docker run	Run a command in a new container
docker save	Save one or more images to a tar archive (streamed to STDOUT by default)
docker search	Search the Docker Hub for images
docker secret	Manage Docker secrets
docker service	Manage services
docker stack	Manage Docker stacks
docker start	Start one or more stopped containers
docker stats	Display a live stream of container(s) resource usage statistics
docker stop	Stop one or more running containers
docker swarm	Manage Swarm
docker system	Manage Docker
docker tag	Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE
docker top	Display the running processes of a container
docker trust	Manage trust on Docker images
docker unpause	Unpause all processes within one or more containers
docker update	Update configuration of one or more containers
docker version	Show the Docker version information
docker volume	Manage volumes
docker wait	Block until one or more containers stop, then print their exit codes

spring boot external static content

addresourcehandlers spring boot

return list of json spring boot rest controller

down vote

Let Say we have list of CarDetails Pojo and we want to return them back

@RestController
public class CarDetailController {
  @GetMapping("/viewAllCarDetailList")
    public List<CarDetail> retrieveAllCarDetails() {
        List<CarDetail> contacts = new ArrayList<CarDetail>();

        CarDetail objt = new CarDetail();
        objt.setCarModel("hyundai");
        objt.setSubModel("I10");
        CarDetail objt2 = new CarDetail();
        objt2.setCarModel("hyundai");
        objt2.setSubModel("I20");        
        contacts.add(objt);
        contacts.add(objt2);
        return contacts;
    }
}
    public class CarDetails {

            private String carModel;
            private String subModel;
// Will haave Setter getter and hash code equls method
//and constructor
    }

This JSON will be output:-

[
    {
        "carModel": "hyundai",
        "subModel": "I10"
    },
    {
        "carModel": "hyundai",
        "subModel": "I20"
    }
]

https://stackoverflow.com/questions/41719142/how-to-return-a-set-of-objects-with-spring-boot

scala object hello world eclipse example

scala hello world eclipse

object HelloWorldScala {
  def main(args: Array[String]) {
    println("Hello Scala !!")
  }
}

output will be as like bellow

Hello Scala !!

spark-shell java was unexpected at this time

spark-shell java was unexpected at this time

You can see this issue when your Java home set like following in windows

JAVA_HOME=C:\Program Files (x86)\Java\jdk1.8.0_162\bin
Issue here is space in "Program Files (x86)" If you add double quotes will not work on window 10

"C:\Program Files (x86)\Java\jdk1.8.0_162\bin"
You need to copy Java into outside Program Files (x86) then it should work

JAVA_HOME=C:\java\jdk1.8.0_171\bin
--------------------------------------------------------------------------------------------------
Finally I upgraded my java version to JDK 1.8 for Spark!!!

spark shell cmd not recognized as an internal or external command

spark shell cmd not recognized as an internal or external command


I fixed it after following changes:

There were multiple Java/bin path in the System Path.
 So I corrected them to reflect single Java/Bin, which is in sync with JAVA_HOME

Added C:Windows\system32 to System Path Variable.

hyperlink in HTML

<!DOCTYPE html>
<html>
<body>

<h2>hyperlink in  HTML </h2>
<p><a href="http://localhost:8080/addCarDetails">Visit our AddCarDetails</a></p>

</body>
</html>