How to sign a jar to never expire?

Question

I used jarsigner to sign my jar file. But I got a warning:

 Warning: This jar contains entries whose signer certificate will expire within six months.

How can I make it never expire or expire for a longer time?

+7

Sawyer May 30 '11 at 1:28

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1 answer

trashgod · Accepted Answer · 2011-05-30T01:34:26+0000

Specify the required number of days in the -validity parameter in keytool .

Application: -validity is a keytool option.

 keytool -genkey -alias sawyer -validity 1234 -dname "…"

After creating a new key, use your unique alias jarsigner to sign the JAR.