There are two options for specifying the namespace/package that classes will be generated into:
1.-csnsname (C#) or -pkgname (Java): This option lets you specify a single namespace/package that all classes will be generated into. This option is a good alternative when your schemas do not have overlapping type names.
1.-csnspfx (C#) or -pkgpfx (Java): This option causes
the classes for each schema to be generated into a separate
namespace/package, each of which will be a child of the
namespace/package specified with the option. For example,
given "-csnspfx com.test", classes from
myschema.xsd will be in namespace
com.test.myschema
TIP: Choose your namespace/package name carefully. Avoid using a name whose first piece will be used as a name in your schema. For example, using test as a package name when there are elements (and thus generated fields) named test will likely cause C#/Java compilation errors (the field name will hide the namespace/package name).