port already in use issue docker container

 https://www.curiousm.com/labs/2020/10/08/resolving-bind-address-already-in-use-when-starting-a-docker-instance/

sudo /etc/init.d/apache2 restart 

or 

sudo apachectl -k restart

aws cognito get user infromation based on token

 https://www.archerimagine.com/articles/aws/aws-cognito-tutorials.html

var params = { AccessToken: 'STRING_VALUE' /* required */ }; cognitoidentityserviceprovider.getUser(params, function(err, data) { if (err) console.log(err, err.stack); // an error occurred else console.log(data); // successful response });

java find value from json

 https://mkyong.com/java/jackson-tree-model-example/

http://tutorials.jenkov.com/java-json/jackson-jsonnode.html