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A file used to keep the root certificates of signing authorities. 1  in C:\Program Files\java\jre1.8.0_102\lib\security\cacerts. in JRE 1.8.0_102 on your local Windows C: drive.  in J:\Program Files\java\jdk1.8.0_102\jre\lib\security\cacerts. in JDK 1.8.0_102 on your local Windows J: drive.
Compile and run it, then hunt down the location of the java.exe image. E.g. in Windows 7 open the task manager, find the java.exe entry, right click and select 'open file location', this opens the exact location of the Java binary. need to know where JDK is located on my machine. On running 'Java-version' in cmd it shows the version as '1.6.xx'. To find the location of this SDK on my machine I tried using echo %JAVA_HOME% but it is only showing 'JAVA_HOME' (as there is no 'JAVA_PATH' var set in my environment variables).