# Cannot build processing by running "ant run"

**URL:** <https://discourse.processing.org/t/cannot-build-processing-by-running-ant-run/16513>\
**Category:** Development\
**Created:** [December 19, 2019, 3:14pm UTC](https://discourse.processing.org/t/cannot-build-processing-by-running-ant-run/16513 "2019-12-19T15:14:51Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Jedi18](https://avatars.discourse-cdn.com/v4/letter/j/58956e/32.png) [@Jedi18](https://discourse.processing.org/u/Jedi18)\
**Post date:** [December 19, 2019, 3:14pm UTC](https://discourse.processing.org/t/cannot-build-processing-by-running-ant-run/16513/1 "2019-12-19T15:14:51Z")

</div>

I’m on Windows 10 64 bit.

Error :-

```auto
Unable to locate tools.jar. Expected to find it in C:\Program Files\Java\jre1.8.0_202\lib\tools.jar
Buildfile: C:\Users\targe\Documents\GSoC\processing\build\build.xml

run:

ignore-tools:
     [echo] Ignore the 'Unable to locate tools.jar' message.
     [echo] The tools.jar file is not required to build Processing.

revision-check:

windows-check-os:

jre-check:

downloader-setup:

compile:

dist:

jre-download:
[downloader] Redirecting to https://edelivery.oracle.com/otn-pub/java/jdk/8u202-b08/1961070e4c9b4e26a04e7f5a083f551e/jre-8u202-windows-x64.tar.gz
[downloader] Redirecting to http://download.oracle.com/otn-pub/java/jdk/8u202-b08/1961070e4c9b4e26a04e7f5a083f551e/jre-8u202-windows-x64.tar.gz?AuthParam=1576768230_11e290b4e3bff34c74333d7a02ff5fd6
[downloader] Redirecting to https://download.oracle.com/otn-pub/java/jdk/8u202-b08/1961070e4c9b4e26a04e7f5a083f551e/jre-8u202-windows-x64.tar.gz?AuthParam=1576768230_11e290b4e3bff34c74333d7a02ff5fd6
[downloader] Header Name:Accept-Ranges
[downloader] Header value:bytes
[downloader]
[downloader] Header Name:null
[downloader] Header value:HTTP/1.1 404 Not Found
[downloader]
[downloader] Header Name:Server
[downloader] Header value:AkamaiNetStorage
[downloader]
[downloader] Header Name:ETag
[downloader] Header value:"477d9862374177c810b0b7d73b4f1e53:1531792454.541174"
[downloader]
[downloader] Header Name:Connection
[downloader] Header value:keep-alive
[downloader]
[downloader] Header Name:Last-Modified
[downloader] Header value:Wed, 31 Aug 2011 20:28:54 GMT
[downloader]
[downloader] Header Name:Content-Length
[downloader] Header value:7073
[downloader]
[downloader] Header Name:Date
[downloader] Header value:Thu, 19 Dec 2019 15:08:34 GMT
[downloader]
[downloader] Header Name:Content-Type
[downloader] Header value:text/html
[downloader]

C:\Users\targe\Documents\GSoC\processing\build>ant run
Unable to locate tools.jar. Expected to find it in C:\Program Files\Java\jre1.8.0_202\lib\tools.jar
Buildfile: C:\Users\targe\Documents\GSoC\processing\build\build.xml

run:

ignore-tools:
     [echo] Ignore the 'Unable to locate tools.jar' message.
     [echo] The tools.jar file is not required to build Processing.

revision-check:

windows-check-os:

jre-check:

downloader-setup:

compile:

dist:

jre-download:
[downloader] Redirecting to https://edelivery.oracle.com/otn-pub/java/jdk/8u202-b08/1961070e4c9b4e26a04e7f5a083f551e/jre-8u202-windows-x64.tar.gz
[downloader] Redirecting to http://download.oracle.com/otn-pub/java/jdk/8u202-b08/1961070e4c9b4e26a04e7f5a083f551e/jre-8u202-windows-x64.tar.gz?AuthParam=1576768242_343c9e1be6afaa3dc71b468dacd495a3
[downloader] Redirecting to https://download.oracle.com/otn-pub/java/jdk/8u202-b08/1961070e4c9b4e26a04e7f5a083f551e/jre-8u202-windows-x64.tar.gz?AuthParam=1576768242_343c9e1be6afaa3dc71b468dacd495a3
[downloader] Header Name:Accept-Ranges
[downloader] Header value:bytes
[downloader]
[downloader] Header Name:null
[downloader] Header value:HTTP/1.1 404 Not Found
[downloader]
[downloader] Header Name:Server
[downloader] Header value:AkamaiNetStorage
[downloader]
[downloader] Header Name:ETag
[downloader] Header value:"477d9862374177c810b0b7d73b4f1e53:1531792454.541174"
[downloader]
[downloader] Header Name:Connection
[downloader] Header value:keep-alive
[downloader]
[downloader] Header Name:Last-Modified
[downloader] Header value:Wed, 31 Aug 2011 20:28:54 GMT
[downloader]
[downloader] Header Name:Content-Length
[downloader] Header value:7073
[downloader]
[downloader] Header Name:Date
[downloader] Header value:Thu, 19 Dec 2019 15:08:43 GMT
[downloader]
[downloader] Header Name:Content-Type
[downloader] Header value:text/html
[downloader]

```