Uses of Class
java.util.AbstractMap

Packages that use AbstractMap 
Package Description
java.util
Contains the collections framework, some internationalization support classes, a service loader, properties, random number generation, string parsing and scanning classes, base64 encoding and decoding, a bit array, and several miscellaneous utility classes.
java.util.concurrent
Utility classes commonly useful in concurrent programming.
javax.print.attribute.standard
Package javax.print.attribute.standard contains classes for specific printing attributes.