How to disable spring logo banner in spring boot?

By default, all spring boot applications will show up below spring logo banner in all spring boot applications.

Spring Logo Banner in Spring Boot Application Start up logs

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v1.5.2.RELEASE)

We can disable spring logo in various ways using Banner.Mode. Banner.Mode comes with there options:

CONSOLE: Print the banner to System.out.

LOG: Print the banner to the log file.

OFF: Disable printing of the banner.

You can update banner mode in application.properties file as shown below:

application.properties

spring.main.banner-mode=off

You can also update it in SpringApplication class as shown below:

SpringBootWebApplication

package com.java2novice.springboot;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.Banner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class SpringBootWebApplication {

	private static Logger logger = LoggerFactory.getLogger(SpringBootWebApplication.class);

	public static void main(String[] args) throws Exception {

		SpringApplication springApp = new SpringApplication(SpringBootWebApplication.class);
		springApp.setBannerMode(Banner.Mode.OFF);
		springApp.run(args);
	}
}

Also you can update it through command line arguments:

Terminal

$ java -Dspring.main.banner-mode=off -jar myAppBundle.jar

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Accessing elements are faster with ArrayList, because it is index based. But accessing is difficult with LinkedList. It is slow access. This is to access any element, you need to navigate through the elements one by one. But insertion and deletion is much faster with LinkedList, because if you know the node, just change the pointers before or after nodes. Insertion and deletion is slow with ArrayList, this is because, during these operations ArrayList need to adjust the indexes according to deletion or insetion if you are performing on middle indexes. Means, an ArrayList having 10 elements, if you are inserting at index 5, then you need to shift the indexes above 5 to one more.

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