import java.util.Map; class Test { public static void main(String[] args) { <error descr="Incompatible types. Found: 'java.util.Map<java.lang.Integer,java.lang.Comparable>', required: 'java.util.Map<java.lang.Integer,java.lang.Object>'">Map<Integer, Object> map = make();</error> } public static <K extends Comparable, V extends Comparable> Map<K,V> make() { return null; } }