udunits/src/main/java/ucar/units/StandardUnitDB.java
public static void main(final String[] args) throws Exception {
    final UnitDB db = StandardUnitDB.instance();
    System.out.println("db.get(\"meter\")=" + db.get("meter"));
    System.out.println("db.get(\"meters\")=" + db.get("meters"));
    System.out.println("db.get(\"metre\")=" + db.get("metre"));
    System.out.println("db.get(\"metres\")=" + db.get("metres"));
    System.out.println("db.get(\"m\")=" + db.get("m"));
    System.out.println("db.get(\"newton\")=" + db.get("newton"));
    System.out.println("db.get(\"Cel\")=" + db.get("Cel"));
    System.out.println("db.get(\"Roentgen\")=" + db.get("Roentgen"));
    System.out.println("db.get(\"rad\")=" + db.get("rad"));
    System.out.println("db.get(\"rd\")=" + db.get("rd"));
    System.out.println("db.get(\"perches\")=" + db.get("perches"));
    System.out.println("db.get(\"jiffies\")=" + db.get("jiffies"));
    System.out.println("db.get(\"foo\")=" + db.get("foo"));
  }
public static void main(final String[] args) throws Exception {
    final UnitDB db = StandardUnitDB.instance();
    System.out.println("db.get(\"meter\")=" + db.get("meter"));
    System.out.println("db.get(\"meters\")=" + db.get("meters"));
    System.out.println("db.get(\"metre\")=" + db.get("metre"));
    System.out.println("db.get(\"metres\")=" + db.get("metres"));
    System.out.println("db.get(\"m\")=" + db.get("m"));
    System.out.println("db.get(\"newton\")=" + db.get("newton"));
    System.out.println("db.get(\"Cel\")=" + db.get("Cel"));
    System.out.println("db.get(\"Roentgen\")=" + db.get("Roentgen"));
    System.out.println("db.get(\"rad\")=" + db.get("rad"));
    System.out.println("db.get(\"rd\")=" + db.get("rd"));
    System.out.println("db.get(\"perches\")=" + db.get("perches"));
    System.out.println("db.get(\"jiffies\")=" + db.get("jiffies"));
    System.out.println("db.get(\"foo\")=" + db.get("foo"));
  }
Tests this class.