From 05c598c830d4ff10b926a3f413e8a6129fd4337a Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Tue, 8 Sep 2015 18:16:50 +0200
Subject: Stuff

---
 .../java/org/openslx/imagemaster/util/Util.java    | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'src/main/java/org/openslx/imagemaster/util')

diff --git a/src/main/java/org/openslx/imagemaster/util/Util.java b/src/main/java/org/openslx/imagemaster/util/Util.java
index ca595b5..79589c4 100644
--- a/src/main/java/org/openslx/imagemaster/util/Util.java
+++ b/src/main/java/org/openslx/imagemaster/util/Util.java
@@ -40,6 +40,28 @@ public class Util
 		}
 	}
 
+	/**
+	 * Check if the given object is null, abort program if true.
+	 * An optional message to be printed can be passed. A stack trace
+	 * will be printed, too. Finally the application terminates with
+	 * exit code 2.
+	 * 
+	 * This comes in handy if something must not be null, and you want
+	 * user friendly output. A perfect example would be reading settings
+	 * from a config file. You can use this on mandatory fields.
+	 * 
+	 * @param something the object to compare to null
+	 * @param message the message to be printed if something is null
+	 */
+	public static void notNullFatal( int number, String message )
+	{
+		if ( number == 0 ) {
+			if ( message != null )
+				log.fatal( "[NOTNULL] " + message, new NullPointerException() );
+			System.exit( 2 );
+		}
+	}
+
 	/**
 	 * Check if String is null or empty, abort program if so.
 	 * An optional message to be printed can be passed. A stack trace
-- 
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