Join String list elements with a delimiter in one step

Question

Is there a function like join that returns List s data as a string of all the elements  joined by delimiter provided    List lt String gt  join        String join   list join           join     Elem 1 Elem 2     or one must use an iterator to manually glue the elements

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You can use the StringUtils join   method of Apache Commons Lang   String join   StringUtils join joinList

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If you are using Spring you can use StringUtils join   method which also allows you to specify prefix and suffix   String s   StringUtils collectionToDelimitedString fieldRoles keySet                      n     lt value gt      lt  value gt

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Or Joiner from Google Guava   Joiner joiner   Joiner on       String join   joiner join joinList

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If you just want to log the list of elements  you can use the list toString   method which already concatenates all the list elements

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Java 8      String joined   String join      list     Documentation  http   docs oracle com javase 8 docs api java lang String html join-java lang CharSequence-java lang Iterable-

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You can use   org springframework util StringUtils   String stringDelimitedByComma   StringUtils collectionToCommaDelimitedString myList

[java] Join String list elements with a delimiter in one step

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