com.hazelcast.util.RandomPicker Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2013, Hazelcast, Inc. 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.
*/
package com.hazelcast.util;
import java.util.Random;
/**
* User: ahmetmircik
* Date: 10/7/13
* Time: 12:27 PM
*/
public final class RandomPicker {
private static Random randomNumberGenerator;
private RandomPicker() {
}
private static synchronized void initRNG() {
if (randomNumberGenerator == null) {
randomNumberGenerator = new Random();
}
}
public static int getInt(int n) {
if (randomNumberGenerator == null) {
initRNG();
}
return randomNumberGenerator.nextInt(n);
}
}