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Author description: Stores design ideas and algorithms for JAVA development: "Sword Finger Offer", "Programming Pearls", "In-depth Understanding of Java Virtual Machine: JVM Advanced Features and Best Practices", "Refactoring - Improving the Design of Existing Codes Chinese Version", "clean_code (Chinese Full Version)", "Java Programming Thoughts (4th Edition)", "Java Core Technology Volume I" (8th Edition)", "Quartz_Job+Scheduling_Framework"; some large files that cannot be uploaded are in the README
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