plugins/InspectionGadgets/test/com/siyeh/igtest/bugs/array_equality/ArrayEquality.java

class ArrayEquality {

  boolean a(String[] a, String[] b) {
    return a <warning descr="Array objects are compared using '==', not 'Arrays.equals()'">==</warning> b;
  }

  boolean b(Number[] n) {
    return n == null;
  }
}