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Java String join()

The java string join() method returns a string joined with given delimiter. In string join method, delimiter is copied for each elements.

In case of null element, "null" is added. The join() method is included in java string since JDK 1.8.

There are two types of join() methods in java string.


The signature or syntax of string join method is given below:


delimiter : char value to be added with each element

elements : char value to be attached with delimiter


joined string with delimiter


NullPointerException if element or delimiter is null.



Java String join() method example

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Java String join() Method Example 2

We can use delimeter to format the string as we did in the below example to show date and time.

25/06/2018 12:10:10

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