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https://www.youtube.com/watch?v=3IgUCGDnRPg&list=UUhwKlOVR041tngjerWxVccw
StringJoinerExample.java
Output
https://www.youtube.com/watch?v=3IgUCGDnRPg&list=UUhwKlOVR041tngjerWxVccw
StringJoinerExample.java
import java.util.StringJoiner; /* Method public StringJoiner merge(StringJoiner other) Parameters: other - The StringJoiner whose contents should be merged into this one Returns: This StringJoiner */ public class StringJoinerExample { public static void main(String[] args) { StringJoiner stringJoiner1 = new StringJoiner(":", "[", "]"); stringJoiner1.add("Java").add("Scala").add("Groovy"); System.out.println("stringJoiner1 : " + stringJoiner1 + System.lineSeparator()); StringJoiner stringJoiner2 = new StringJoiner(","); stringJoiner2.add("Apple").add("Ball"); System.out.println("stringJoiner2 : " + stringJoiner2 + System.lineSeparator()); /* * Adds the contents of the given StringJoiner without prefix and suffix * as the next element if it is non-empty. If the given StringJoiner is * empty, the call has no effect. * * If the other StringJoiner is using a different delimiter, then * elements from the other StringJoiner are concatenated with that * delimiter and the result is appended to this StringJoiner as a single * element. */ stringJoiner2.merge(stringJoiner1); System.out.println("stringJoiner2 afterMerge with stringJoiner1 : " + stringJoiner2); } }
stringJoiner1 : [Java:Scala:Groovy] stringJoiner2 : Apple,Ball stringJoiner2 afterMerge with stringJoiner1 : Apple,Ball,Java:Scala:Groovy
https://sites.google.com/site/javaee4321/java-collections/StringJoinerDemoMergeDemo.zip?attredirects=0&d=1
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