[BAEL-8232] - Moved java string related code and github links into new module java-strings

core-java-9/README.md

@@ -17,7 +17,6 @@
 - [Java 9 Reactive Streams](http://www.baeldung.com/java-9-reactive-streams)
 - [How to Get All Dates Between Two Dates?](http://www.baeldung.com/java-between-dates)
 - [Java 9 java.util.Objects Additions](http://www.baeldung.com/java-9-objects-new)
-- [Compact Strings in Java 9](http://www.baeldung.com/java-9-compact-string)
 - [Convert Date to LocalDate or LocalDateTime and Back](http://www.baeldung.com/java-date-to-localdate-and-localdatetime)
 - [Java 9 Variable Handles Demistyfied](http://www.baeldung.com/java-variable-handles)
 - [Exploring the New HTTP Client in Java 9](http://www.baeldung.com/java-9-http-client)

core-java-9/src/main/java/com/baeldung/java9/compactstring/CompactStringDemo.java

@@ -1,24 +0,0 @@
-package com.baeldung.java9.compactstring;
-
-import java.util.List;
-import static java.util.stream.Collectors.toList;
-import java.util.stream.IntStream;
-
-public class CompactStringDemo {
-
-    public static void main(String[] args) {
-        long startTime = System.currentTimeMillis();
-        List strings = IntStream.rangeClosed(1, 10_000_000)
-          .mapToObj(Integer::toString).collect(toList());
-        long totalTime = System.currentTimeMillis() - startTime;
-        System.out.println("Generated " + strings.size() + " strings in " 
-          + totalTime + " ms.");
-
-        startTime = System.currentTimeMillis();
-        String appended = (String) strings.stream().limit(100_000)
-          .reduce("", (left, right) -> left.toString() + right.toString());
-        totalTime = System.currentTimeMillis() - startTime;
-        System.out.println("Created string of length " + appended.length() 
-          + " in " + totalTime + " ms.");
-    }
-}