JGRIB a Java program to read GRIB (GRid in Binary) files. GRIB is a gridded data standard from WMO (World Meteorological Organisation) and is used by many meteorological organisation.
WKB4J is a Java library designed to read the Well-Known Binary format from a database and transform this data into corresponding Java objects. It supports several different GIS toolkits (JTS, PostGIS, OpenMap...).