###. JRE證書
cacerts 位于 C:\Program Files\Java\jre1.8.0_211\lib\security
`keytool -list -rfc -keystore cacerts`
查看證書需要密碼,默認密碼是changeit。
### Applet簽名
1.
`keytool -genkey -keystore myapplet.store -alias myapplet`
2.
`keytool -export -keystore myapplet.store -alias myapplet -file myapplet.cer`
3.
`jarsigner -keystore myapplet.store myapplet.jar myapplet`
5.
`keytool -import -alias myapplet -file
myapplet.cer -keystore cacerts`
### Java權限





