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《Differences Between Oracle JDK and OpenJDK》https://www.baeldung.com/oracle-jdk-vs-openjdk
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Java hashCode() 和 equals()的若干问题解答https://www.cnblogs.com/skywang12345/p/3324958.html
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https://stackoverflow.com/questions/1906445/what-is-the-difference-between-jdk-and-jrehttps://stackoverflow.com/questions/1906445/what-is-the-difference-between-jdk-and-jre
https://www.educba.com/oracle-vs-openjdk/https://www.educba.com/oracle-vs-openjdk/
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