배우기를 멈추는 사람은 20세건 80세건 늙은 것이다.

import java.util.*; import java.util.stream.*; class Test { public static void main(String[] args) { List list = new ArrayList(); list.add("Hello"); list.add("Hello"); list.add("World"); Map counted = list.stream() .collect(Collectors.groupingBy(Function.identity(), Collectors.counting())); System.out.println(counted); } } https://stackoverflow.com/questions/25441088/how-can-i-count-occurrences-..

https://www.jetbrains.com/help/idea/encoding.html Encoding | IntelliJ IDEA www.jetbrains.com

public static void printList(List list) { for (Object elem: list) System.out.print(elem + " "); System.out.println(); } You use the unbounded wildcards when the list (or the collection) is of unknown types. https://stackoverflow.com/questions/29342117/what-is-the-purpose-of-list-if-one-can-only-insert-a-null-value

hdfs dfs -rm -r https://stackoverflow.com/questions/13529114/how-to-delete-a-directory-from-hadoop-cluster-which-is-having-comma-in-its-na How to Delete a directory from Hadoop cluster which is having comma(,) in its name? I have uploaded a Directory to hadoop cluster that is having "," in its name like "MyDir, Name" when I am trying to delete this Directory by using rmr hadoop shell command as ..

https://stackabuse.com/encode-a-string-to-utf-8-in-java/ Encode a String to UTF-8 in Java In this tutorial, we'll take a look at how to encode a String to UTF-8 in Java - using StandardCharsets, getBytes() with ByteBuffer and Apache Commons with examples. stackabuse.com

https://www.verywellmind.com/tips-for-finding-your-purpose-in-life-4164689 7 Ways to Find More Meaning and Purpose in Your Life Finding your purpose in life isn't just a cliche. Studies show it has real benefits for you. Here are seven things you can do to find your purpose. www.verywellmind.com

=GOOGLEFINANCE("USDKRW") https://heecheoldo.tistory.com/40 [구글 스프레드시트] 환율 값 가져오기 (GOOGLEFINANCE 함수) 해당 콘텐츠는 구글 스프레드시트를 활용한 "주식 포트폴리오 양식" 제작을 위한 함수 내용입니다. ※ 주식 포트폴리오 양식 통합본 마지막, 주식 포트폴리오 양식 통합본 공유 (Full Version, 구글 heecheoldo.tistory.com

https://hydroponicglass.tistory.com/134 [JAVA] 정수의 최대값, 최소값 출력 자바에서 정수의 최대값, 최소값 출력 // java public static void main(String[] args) { System.out.println(Integer.MAX_VALUE); // 2147483647 System.out.println(Integer.MIN_VALUE); // -2147483648 } 32비.. hydroponicglass.tistory.com

int[] array = list.stream().mapToInt(i -> i).toArray(); https://stackoverflow.com/questions/960431/how-to-convert-listinteger-to-int-in-java How to convert List to int[] in Java? This is similar to this question: How to convert int[] to Integer[] in Java? I'm new to Java. How can i convert a List to int[] in Java? I'm confused because List.toArray() actually stackoverflow.com

file -bi myfile.txt https://stackoverflow.com/questions/1730878/encoding-of-file-shell-script encoding of file shell script How can I check the file encoding in a shell script? I need to know if a file is encoded in utf-8 or iso-8859-1. Thanks stackoverflow.com

System.out.println(String.valueOf(Charset.defaultCharset())); https://stackoverflow.com/questions/1006276/what-is-the-default-encoding-of-the-jvm What is the default encoding of the JVM? Is UTF-8 the default encoding in Java? If not, how can I know which encoding is used by default? stackoverflow.com

private static RestTemplate restTemplate; static { HttpComponentsClientHttpRequestFactory rf = new HttpComponentsClientHttpRequestFactory(); rf.setReadTimeout(3 * 1000); rf.setConnectTimeout(2 * 1000); restTemplate = new RestTemplate(rf); restTemplate.getMessageConverters() .add(0, new StringHttpMessageConverter(StandardCharsets.UTF_8)); } https://stackoverflow.com/questions/13837012/spring-rest..

삶의 의미는 자신의 재능을 발견하는 것이고, 삶의 목적은 그 재능으로 누군가의 삶이 더 나아지게 돕는 것이다. - 파블로 피카소 - 우물 안 개구리 세상을 동경하고, 우물을 벗어나지 못하는 자신을 괴롭히며 불안해한다. 넓은 세상으로 가 보리라. 나를 설명하는 포장지 서른 살은 무너진 자존심을 부여잡고 오기로 버티는 시간이었다. 우물이든 바다든 행복하게 살면 된다. 그냥 나로 행복하게 살면 된다. 가면 증후군(자신의 능력을 보잘것 없다고 느끼며 무기력해지고 불안해지는 심리 현상) 커밍아웃, 서로를 응원했다. 실패담과 성공담을 나누고, 마음과 생각을 정리하며 글을 썼다. 우린 스스로 생각하는 것보다 준비가 잘 되어 있다. 나만 빼고 레벨업 6개월 이라는 시간 망설이는 나를 밀어줄 친구와 방아쇠를 당길 용기라..

$ git clone https://github.com/username/repo.git Username: your_username Password: your_token https://docs.github.com/en/github/authenticating-to-github/keeping-your-account-and-data-secure/creating-a-personal-access-token Creating a personal access token - GitHub Docs You should create a personal access token to use in place of a password with the command line or with the API. docs.github.com

yourDf .coalesce(1) // if you want to save as single file .write .option("sep", "\t") .option("encoding", "UTF-8") .csv("outputpath") https://stackoverflow.com/questions/61063446/how-to-write-a-spark-dataframe-tab-delimited-as-a-text-file-using-java How to write a spark dataframe tab delimited as a text file using java I have a Spark Dataset with lot of columns that have to be written to a text ..