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Java - string join() method example

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Created by:
Palusbug
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In this article, we would like to show you string join() method example in Java.

Quick solution:

String joinString = String.join(" ", "Dirask", "is", "awesome", "!");
System.out.println(joinString);

 

1. Documentation

Syntaxpublic static String join(CharSequence delimiter, CharSequence... elements)
Parameters

delimiter - a sequence of characters that is used to separate each of the elements,

elements - the elements to join together.

Resulta new String that is composed of the elements separated by the delimiter
DescriptionThe method returns a new String composed of copies of the CharSequence elements joined together with a copy of the specified delimiter.

2. Practical examples

Java string join() method returns a string joined with a given delimiter which is copied for each element.

Example 1

In this example, we join string elements with an empty string as a delimiter.

public class Example {

    public static void main(String[] args) {
        String joinString = String.join(" ", "Dirask", "is", "awesome", "!");
        System.out.println(joinString);
    }
}

Output:

Dirask is awesome !

Example 2

In this example, we use join() method with - as a delimiter to display string elements as a date.

public class Example {

    public static void main(String[] args) {
        String joinString = String.join("-", "2021", "03", "11");
        System.out.println(joinString);
    }
}

Output:

2021-03-11

Java - String documentation

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