How to change intellij idea theme to white

How to IntelliJ change background color to white

Steps are:-
1  go to File Menu
2  Select on Settings as shown in the image
3  then Search for Appearance and then
4 Use the Scheme list to select a color scheme.

Java 8 predicate test method example

for this
https://stackoverflow.com/questions/1128723/how-do-i-determine-whether-an-array-contains-a-particular-value-in-java/1128728#1128728                 

I have a String[] with values like so:

public static final String[] VALUES = new String[] {"AB","BC","CD","AE"};

Given String s, is there a good way of testing whether VALUES contains s?

ANS:

Java 8 predicate test method is best for it.

test(T t) : Evaluates this predicate on the given argument.boolean test(T t)

test(T t) Parameters: t - the input argument Returns: true if the input argument matches the predicate, otherwise false

Here is a full example of it.

import java.util.Arrays;

import java.util.List;

import java.util.function.Predicate;

public class Test {

public static final List<String> VALUES = Arrays.asList("AA", "AB", "BC", "CD", "AE");

public static void main(String args[]) {

Predicate<String> containsLetterA = VALUES -> VALUES.contains("AB");

for (String i : VALUES) {

System.out.println(containsLetterA.test(i));

}

}

}

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