Camelsplit for pre Java 8 compat

src/com/massivecraft/massivecore/command/editor/CommandEditAbstract.java

@@ -293,8 +293,8 @@ public class CommandEditAbstract<O, V> extends MassiveCommand
 	public String createCommandAlias()
 	{
 		// Split at uppercase letters
-		final String[] words = this.getClass().getSimpleName().split("(?=[A-Z])");
+		final List<String> words = Txt.camelsplit(this.getClass().getSimpleName());
-		String alias = words[words.length - 1];
+		String alias = words.get(words.size() - 1);
 		alias = alias.toLowerCase();
 		return alias;
 	}

src/com/massivecraft/massivecore/command/editor/CommandEditContainerAbstract.java

@@ -82,10 +82,8 @@ public abstract class CommandEditContainerAbstract<O, V> extends CommandEditAbst
 	public String createCommandAlias()
 	{
 		// Split at uppercase letters
-		String name = this.getClass().getSimpleName();
+		String alias = this.getClass().getSimpleName();
-		name = name.substring("CommandEditContainer".length());
+		alias = alias.substring("CommandEditContainer".length());
-		final String[] words = name.split("(?=[A-Z])");
-		String alias = Txt.implode(words, "");
 		alias = Txt.lowerCaseFirst(alias);
 		return alias;
 	}

src/com/massivecraft/massivecore/command/type/TypeAbstract.java

@@ -68,7 +68,7 @@ public abstract class TypeAbstract<T> implements Type<T>
 		name = name.substring(prefixLength);
 		
 		// We split at uppercase letters, because most class names are camel-case.
-		final String[] words = Txt.PATTERN_UPPERCASE.split(name);
+		final List<String> words = Txt.camelsplit(name);
 		return Txt.implode(words, " ").toLowerCase();
 	}
 	

src/com/massivecraft/massivecore/util/Txt.java

@@ -41,7 +41,7 @@ public class Txt
 	
 	public static final Pattern PATTERN_WHITESPACE = Pattern.compile("\\s+");
 	public static final Pattern PATTERN_NEWLINE = Pattern.compile("\\r?\\n");
-	public static final Pattern PATTERN_UPPERCASE = Pattern.compile("(?=[A-Z])");
+	private static final Pattern PATTERN_UPPERCASE_ZEROWIDTH = Pattern.compile("(?=[A-Z])"); // NOTE: Use camelsplit instead for Java 6/7 compatibility.
 	
 	public static final long millisPerSecond = 1000;
 	public static final long millisPerMinute = 60 * millisPerSecond;
@@ -232,6 +232,15 @@ public class Txt
 	// Standard utils like UCFirst, implode and repeat.
 	// -------------------------------------------- //
 	
+	public static List<String> camelsplit(String string)
+	{
+		List<String> ret = Arrays.asList(PATTERN_UPPERCASE_ZEROWIDTH.split(string));
+		// In version before Java 8 zero width matches in the beginning created a leading empty string.
+		// We manually look for it and removes it to be compatible with Java 6 and 7.
+		if (ret.get(0).isEmpty()) ret = ret.subList(1, ret.size());
+		return ret;
+	}
+	
 	public static String upperCaseFirst(String string)
 	{
 		if (string == null) return null;