diff --git a/src/fr/devinsy/util/strings/StringList.java b/src/fr/devinsy/util/strings/StringList.java
index 94f41cc..daae59e 100644
--- a/src/fr/devinsy/util/strings/StringList.java
+++ b/src/fr/devinsy/util/strings/StringList.java
@@ -1274,6 +1274,29 @@ public class StringList extends ArrayList<String> implements CharSequence
 		return result;
 	}
 
+	/**
+	 * Shrink all string of the list to only one string.
+	 * 
+	 * @return the string list
+	 */
+	public StringList shrink()
+	{
+		StringList result;
+
+		if (!isEmpty())
+		{
+			String shrinked = toString();
+			clear();
+			add(shrinked);
+		}
+
+		//
+		result = this;
+
+		//
+		return result;
+	}
+
 	/**
 	 * Sorts this list.
 	 * 
diff --git a/src/fr/devinsy/util/strings/StringstUtils.java b/src/fr/devinsy/util/strings/StringstUtils.java
index cffed78..70fea9b 100644
--- a/src/fr/devinsy/util/strings/StringstUtils.java
+++ b/src/fr/devinsy/util/strings/StringstUtils.java
@@ -31,6 +31,7 @@ import java.io.PrintWriter;
 import java.io.UnsupportedEncodingException;
 import java.net.URL;
 import java.util.Collection;
+import java.util.Iterator;
 
 import org.apache.commons.lang3.StringUtils;
 
@@ -502,6 +503,92 @@ public class StringstUtils
 		return result;
 	}
 
+	/**
+	 * Checks if is blank.
+	 * 
+	 * @param source
+	 *            the source
+	 */
+	public static boolean isBlank(final Collection<String> source)
+	{
+		boolean result;
+
+		if (source == null)
+		{
+			result = true;
+		}
+		else
+		{
+			Iterator<String> iterator = source.iterator();
+			boolean ended = false;
+			result = false;
+			while (!ended)
+			{
+				if (iterator.hasNext())
+				{
+					String value = iterator.next();
+
+					if (StringUtils.isNotBlank(value))
+					{
+						ended = true;
+						result = false;
+					}
+				}
+				else
+				{
+					ended = true;
+					result = true;
+				}
+			}
+		}
+
+		//
+		return result;
+	}
+
+	/**
+	 * Checks if is empty.
+	 * 
+	 * @param source
+	 *            the source
+	 * @return true, if is empty
+	 */
+	public static boolean isEmptyFully(final Collection<String> source)
+	{
+		boolean result;
+
+		if ((source == null) || (source.isEmpty()))
+		{
+			result = true;
+		}
+		else
+		{
+			Iterator<String> iterator = source.iterator();
+			boolean ended = false;
+			result = false;
+			while (!ended)
+			{
+				if (iterator.hasNext())
+				{
+					String value = iterator.next();
+					if (StringUtils.isNotEmpty(value))
+					{
+						ended = true;
+						result = false;
+					}
+				}
+				else
+				{
+					ended = true;
+					result = true;
+				}
+			}
+		}
+
+		//
+		return result;
+	}
+
 	/**
 	 * Load.
 	 * 
@@ -748,6 +835,40 @@ public class StringstUtils
 		}
 	}
 
+	/**
+	 * Swap case.
+	 * 
+	 * @param source
+	 *            the source
+	 */
+	public static void swapCase(final StringList source)
+	{
+		if (source != null)
+		{
+			for (int index = 0; index < source.size(); index++)
+			{
+				source.set(index, StringUtils.swapCase(source.get(index)));
+			}
+		}
+	}
+
+	/**
+	 * Swap case.
+	 * 
+	 * @param source
+	 *            the source
+	 */
+	public static void swapCase(final StringSet source)
+	{
+		if (source != null)
+		{
+			StringList values = new StringList(source);
+			swapCase(values);
+			source.clear();
+			source.addAll(values);
+		}
+	}
+
 	/**
 	 * Concatenates the string from an array to a string.
 	 * 
@@ -1338,6 +1459,40 @@ public class StringstUtils
 		return result;
 	}
 
+	/**
+	 * Uncapitalize.
+	 * 
+	 * @param source
+	 *            the source
+	 */
+	public static void uncapitalize(final StringList source)
+	{
+		if (source != null)
+		{
+			for (int index = 0; index < source.size(); index++)
+			{
+				source.set(index, StringUtils.uncapitalize(source.get(index)));
+			}
+		}
+	}
+
+	/**
+	 * Uncapitalize.
+	 * 
+	 * @param source
+	 *            the source
+	 */
+	public static void uncapitalize(final StringSet source)
+	{
+		if (source != null)
+		{
+			StringList values = new StringList(source);
+			uncapitalize(values);
+			source.clear();
+			source.addAll(values);
+		}
+	}
+
 	/**
 	 * Upper case.
 	 * 
diff --git a/test/fr/devinsy/util/strings/StringListTest.java b/test/fr/devinsy/util/strings/StringListTest.java
index 30a1345..82c0c76 100644
--- a/test/fr/devinsy/util/strings/StringListTest.java
+++ b/test/fr/devinsy/util/strings/StringListTest.java
@@ -245,6 +245,56 @@ public class StringListTest
 		logger.debug("===== test done.");
 	}
 
+	/**
+	 * Test shrink 01.
+	 */
+	@Test
+	public void testShrink01()
+	{
+		//
+		logger.debug("===== test starting...");
+
+		//
+		StringList source = new StringList();
+
+		Assert.assertEquals(0, source.size());
+
+		source.shrink();
+
+		Assert.assertEquals(0, source.size());
+
+		//
+		logger.debug("===== test done.");
+	}
+
+	/**
+	 * Test shrink 01.
+	 */
+	@Test
+	public void testShrink02()
+	{
+		//
+		logger.debug("===== test starting...");
+
+		//
+		StringList source = new StringList();
+
+		source.append("alpha");
+		source.append("bravo");
+		source.append("charlie");
+		source.append("delta");
+
+		Assert.assertEquals(4, source.size());
+
+		source.shrink();
+
+		Assert.assertEquals(1, source.size());
+		Assert.assertEquals("alphabravocharliedelta", source.get(0));
+
+		//
+		logger.debug("===== test done.");
+	}
+
 	/**
 	 * Test substring 01.
 	 */