save and reuse Random (sonar java:S2119) #473
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"Creating a new Random object each time a random value is needed is inefficient and may produce numbers that are not random, depending on the JDK. For better efficiency and randomness, create a single Random, store it, and reuse it."
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"Creating a new Random object each time a random value is needed is inefficient and may produce numbers that are not random, depending on the JDK. For better efficiency and randomness, create a single Random, store it, and reuse it."
also test CI for pull-requests ;-)