Java 开发

Have a solid Java foundation, have a deep understanding of data structures, design patterns and object-oriented programming, proficient in Java collections, multithreading, thread pools, locks, queues, reflection, network programming (bio, NIO, AIO) and other basic development technologies;
Deep understanding of Java virtual machine, class loading mechanism, garbage collection mechanism, GC algorithm, GC garbage collector (CMS, G1), GC parameters. Proficient in JVM performance failure analysis tools, such as jmap, jstack, java visualVM, Arthas and other JVM performance monitoring tools;