What is StringJoiner ?
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Java - Interview Questions and Answers

Not frequently asked as it was introduced with Java 8.
 Q1. What is StringJoiner ?Core Java
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Ans. StringJoiner is a util method to construct a string with desired delimiter. This has been introduced with wef from Java 8.

Sample Code

StringJoiner strJoiner = new StringJoiner(".");
strJoiner.add("Buggy").add("Bread");
System.out.println(strJoiner); // prints Buggy.Bread


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