Since Oracle Download Oracle JDK need to log in account, so similar to that provided online to download the statement is not feasible, you must bring authentication parameters:
Error: curl -O https://download.oracle.com/otn/java/jdk/8u221-b11/230deb18db3e4014bb8e3e8324f81b43/jdk-8u221-linux-x64.tar.gz
Right: curl -O https://download.oracle.com/otn/java/jdk/8u221-b11/230deb18db3e4014bb8e3e8324f81b43/jdk-8u221-linux-x64.tar.gz ? AuthParam = 1568282940_b353569083df29f3ef7a719b5c85d9df
So how to do authentication parameters:
JDK can be downloaded in Windows with Chrome, and then copy the URL in the download can be obtained, as shown below: