How to use

assertKeyNotNull

method

in

javax.jdo.identity.ByteIdentity

/** Constructor with class and key.
 * @param pcClass the target class
 * @param str the key
 */
public ByteIdentity(Class pcClass, String str) {
  super(pcClass);
  assertKeyNotNull(str);
  construct(Byte.parseByte(str));
}

/** Constructor with class and key.
 * @param pcClass the target class
 * @param str the key
 */
public ByteIdentity(Class pcClass, String str) {
  super(pcClass);
  assertKeyNotNull(str);
  construct(Byte.parseByte(str));
}