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-rw-r--r--src/main/java/org/openecomp/dmaapbc/util/RandomInteger.java61
1 files changed, 61 insertions, 0 deletions
diff --git a/src/main/java/org/openecomp/dmaapbc/util/RandomInteger.java b/src/main/java/org/openecomp/dmaapbc/util/RandomInteger.java
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index 0000000..e8086ce
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+++ b/src/main/java/org/openecomp/dmaapbc/util/RandomInteger.java
@@ -0,0 +1,61 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * OpenECOMP - org.openecomp.dmaapbc
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.dmaapbc.util;
+
+import java.util.Date;
+// source: http://www.javapractices.com/topic/TopicAction.do?Id=62
+// with some modifications
+import java.util.Random;
+
+
+public final class RandomInteger {
+ private static Random randomGenerator;
+ private int range;
+
+ public RandomInteger( int r ) {
+ randomGenerator = new Random();
+ randomGenerator.setSeed((new Date()).getTime());
+ range = r;
+ }
+
+ public int next(){
+ return randomGenerator.nextInt(range);
+ }
+
+ /** Generate 10 random integers in the range 0..99. */
+ public static final void main(String... aArgs){
+ log("Generating 10 random integers in range 0..99.");
+ RandomInteger ri = new RandomInteger(100);
+ //note a single Random object is reused here
+
+ for (int idx = 1; idx <= 10; ++idx){
+ int randomInt = ri.next();
+ log("Generated : " + randomInt);
+ }
+
+ log("Done.");
+ }
+
+ private static void log(String aMessage){
+ System.out.println(aMessage);
+ }
+}
+