public static boolean javaOperatorP(Stella_Object statement) {
    return (Stella_Object.consP(statement) &&
        Stella.getQuotedTree("((JAVA_UNARY_OP JAVA_BINARY_OP JAVA_TERNARY_OP JAVA_ASSIGN JAVA_SLOT_VALUE_SETTER) \"/STELLA\")", "/STELLA").memberP(((Cons)(statement)).value));
  }