adding more functionality in split/join, added chars() usage (#1155)

* rest with spark java

* 4

* Update Application.java

* indentation changes

* spring @requestmapping shortcuts

* removing spring requestmapping and pushing spring-mvc-java

* Joining/Splitting Strings with Java and Stream API

* adding more join/split functionality

core-java/src/main/java/com/baeldung/streamApi/JoinerSplitter.java

@@ -14,10 +14,23 @@ public class JoinerSplitter {
 				.collect(Collectors.joining(","));
 	}
 	
+	public static String joinWithPrefixPostFix ( String[] arrayOfString ) {
+		return Arrays.asList(arrayOfString)
+				.stream()
+				.map(x -> x)
+				.collect(Collectors.joining(",","[","]"));
+	}
+	
 	public static List<String> split ( String str ) {
 		return Stream.of(str.split(","))
 				.map (elem -> new String(elem))
 				.collect(Collectors.toList());
 	}
 	
+	public static List<Character> splitToListOfChar ( String str ) {
+		return str.chars()
+				.mapToObj(item -> (char) item)
+				.collect(Collectors.toList());
+	}
+		
 }