http://java.sun.com/j2se/1.4.2/docs/guide/plugin/developer_guide/tracing_logging.html According to the end part of the above page, when we specify the property javaplugin.outputfiles.overwrite=false we can get the trace file and log file as the following name. .plugin<username><date hash code>.trace and .plugin<username><date hash code>.log In other words, we hope the trace and log information for each session respectively. However, even when we set javaplugin.outputfiles.overwrite=false , We still get the .plugin<version>.trace and .plugin<version>.log under the F:\Documents and Settings\<user>\Application Data\Sun\Java\Deployment\log REPRODUCE : 1) Open the java control panel in [start]-[control panel] 2) click the tab [java] and open the setting runtime. 3) Specify the properties as follows. -Djavaplugin.trace=true -Djavaplugin.trace.option=basic|net|security| ext|liveconnect -Djavaplugin.logging=true -Djavaplugin.outputfiles.overwrite=false 4) Look at the F:\Documents and Settings\<user>\Application Data\Sun\Java\Deployment\log The trace file and log file name is .plugin<version>.trace and .plugin<version>.log EXPECT : We can getthe trace and log files in .plugin<username><date hash code>.trace and .plugin<username><date hash code>.log as the web page expains. ACTUAL : plugin<version>.trace and plugin<version>.log CONFIGURATION: OS : WIndowsXP(SP2, Japanese) JRE : 1.5.0-beta3-b56 Browser : IE 6.0 (SP1) ========================================================================
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