EN
Java - convert comma separated String to ArrayList
4 points
In this post we convert comma separated String to list and back again from list of strings to comma separated String.
xxxxxxxxxx1
import java.util.Arrays;2
import java.util.List;3
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public class Example1 {5
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public static void main(String[] args) {7
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String text = "a, b, c";9
List<String> list = Arrays.asList(text.split("\\s*,\\s*"));10
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System.out.println(list); // [a, b, c]12
}13
}Output:
xxxxxxxxxx1
[a, b, c]In this example we use regex:
\s*,\s*It removes whitespace from left and right side and split our String by comma.
To convert list of Strings to comma separated String, we can use Java 8 String.join method on ',' character.
xxxxxxxxxx1
import java.util.Arrays;2
import java.util.List;3
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public class Example2 {5
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public static void main(String[] args) {7
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List<String> list = Arrays.asList("a", "b", "c");9
String text = String.join(",", list);10
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System.out.println(text); // a,b,c12
}13
}Output:
xxxxxxxxxx1
a,b,c
