mysql - Java Persistence Find Case Sensitive Data Retriving -

i'm using javax.persistence.entitymanager in programme. i've user table use string username primary key in mysql database. when find value username found problem.

sample data :

username : mobileuser001 username : mobileuser002

i used public <t> t find(class<t> entityclass, object primarykey);

so when send "mobileuser001" , "mobileuser001" , "mobileuser001" primary key persistence searched correct data. gives username input, not username correct case in database.

i need correct case "mobileuser001" input mentioned above.