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Java in Docker pitfalls

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Why Java is a special case

• JVM ergonomics
• Libraries ergonomics

JVM and libraries decide how much memory and how many threads to use.

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package com.example.demo;

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;

import java.math.BigInteger;
import java.nio.charset.StandardCharsets;
import java.util.Objects;