BAEL-838 Refromatted code using formatter.xml. Added Assert.assertEquals import. Renamed test to follow convention. Reordered tests.

(cherry picked from commit d9d35f8)

core-java/src/main/java/com/baeldung/string/RemoveLastChar.java

@@ -1,18 +1,11 @@
-/**
- * 
- */
 package com.baeldung.string;
 
-/**
- * @author iaforek
- *
- */
 public class RemoveLastChar {
-	public static String substring (String s) {
-		if (s == null || s.length() == 0) {
-			return s;
-		} else {
-			return (s.substring(0, s.length() - 1));
-		}
-	}
+    public static String substring(String s) {
+        if (s == null || s.length() == 0) {
+            return s;
+        } else {
+            return (s.substring(0, s.length() - 1));
+        }
+    }
 }