From c1747b1a98e4c94eaf483a1b38f2004233024e01 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Roland=20H=C3=A4der?= <roland@mxchange.org>
Date: Thu, 25 Jan 2018 23:05:34 +0100
Subject: [PATCH] Continued: - added method FacesUtils.comareTo() and
 FacesUtils.compareToIgnoreCase() which   are a null-safe
 compareTo()/compareToIgnoreCase() methods
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Signed-off-by: Roland Häder <roland@mxchange.org>
---
 .../mxchange/jcoreee/utils/FacesUtils.java    | 60 +++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/src/org/mxchange/jcoreee/utils/FacesUtils.java b/src/org/mxchange/jcoreee/utils/FacesUtils.java
index e90b245..f015aa9 100644
--- a/src/org/mxchange/jcoreee/utils/FacesUtils.java
+++ b/src/org/mxchange/jcoreee/utils/FacesUtils.java
@@ -78,6 +78,66 @@ public class FacesUtils {
 		return baseUrl;
 	}
 
+	/**
+	 * Compares both string with null-safety. This method is based on the
+	 * example from
+	 * https://codereview.stackexchange.com/questions/20191/comparing-two-strings-which-could-be-null-or-blank-in-a-comparator
+	 * <p>
+	 * @param str0 First string
+	 * @param str1 Second string
+	 * <p>
+	 * @return Comparison value, 0 means equals, -1 means str0 smaller str2 and
+	 *         2 means str0 bigger str2
+	 */
+	@SuppressWarnings ("null")
+	public static int comareTo (final String str0, final String str1) {
+		// Check both strings for null and empty
+		boolean isStr0Empty = (str0 == null || str0.isEmpty());
+		boolean isStr1Empty = (str1 == null || str1.isEmpty());
+
+		// Check conditions
+		if (isStr0Empty && isStr1Empty) {
+			return 0;
+		} else if (isStr0Empty) {
+			return -1;
+		} else if (isStr1Empty) {
+			return 1;
+		}
+
+		// Compare both
+		return str0.compareTo(str1);
+	}
+
+	/**
+	 * Compares both string with null-safety, ignoring case-sensitivity. This
+	 * method is based on the example from
+	 * https://codereview.stackexchange.com/questions/20191/comparing-two-strings-which-could-be-null-or-blank-in-a-comparator
+	 * <p>
+	 * @param str0 First string
+	 * @param str1 Second string
+	 * <p>
+	 * @return Comparison value, 0 means equals, -1 means str0 smaller str2 and
+	 *         2 means str0 bigger str2
+	 */
+	@SuppressWarnings ("null")
+	public static int comareToIgnoreCase (final String str0, final String str1) {
+		// Check both strings for null and empty
+		boolean isStr0Empty = (str0 == null || str0.isEmpty());
+		boolean isStr1Empty = (str1 == null || str1.isEmpty());
+
+		// Check conditions
+		if (isStr0Empty && isStr1Empty) {
+			return 0;
+		} else if (isStr0Empty) {
+			return -1;
+		} else if (isStr1Empty) {
+			return 1;
+		}
+
+		// Compare both
+		return str0.compareToIgnoreCase(str1);
+	}
+
 	/**
 	 * No instances from this class are required
 	 */
-- 
2.39.5