keytool -import -alias cacerts -keystore cacerts -file D:\Programs\Java\jdk1.7.0_80\jre\lib\security\connection.cer
keytool -list -v -alias cacerts -keystore cacerts
keytool -import -alias cacerts -keystore cacerts -file D:\Programs\Java\jdk1.7.0_80\jre\lib\security\connection.cer
keytool -list -v -alias cacerts -keystore cacerts