Problem description: The windows command line jps to view the java process does not respond. How to use jps to view the java process?
Solution: On Windows systems, after each java process is started, a file with the java process pid as the file name is created in the %TMP%/hsperfdata_user (user is the current login user name) directory to record the java process some information. There may not be write permissions to this file, causing the problem.