import java.util.*; class FooClass { { Set[][] a = null; a[0] = new Set[]{ <error descr="Incompatible types. Found: 'java.util.List', required: 'java.util.Set'">fooBar()</error>, <error descr="Incompatible types. Found: 'java.util.List', required: 'java.util.Set'">fooBar()</error>}; } private List fooBar() { return null; } }