I want to make DBAccess.java file..
But I saved DBAccess.java file then Errors happend..
(Because public interface must have each file... )
(example : interface DBAccess ---> DBAccess.java )
What shoud I do?
In advance .. thanks...
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package suncertify.db;
public interface DBAccess
{
// Reads a record from the file. Returns an array where each
// element is a record value.
public
String [] readRecord(long recNo) throws RecordNotFoundException;
(error happened : RecordNotFoundException cannot be resolved to a type )
// Modifies the fields of a record. The new value for field n
// appears in data[n]. Throws SecurityException
// if the record is locked with a cookie other than lockCookie.
public void updateRecord(long recNo, String[] data, long lockCookie)throws RecordNotFoundException, SecurityException;
(error happend : RecordNotFoundException cannot be resolved to a type)
// Deletes a record, making the record number and associated disk
// storage available for reuse.
// Throws SecurityException if the record is locked with a cookie
// other than lockCookie.
public void deleteRecord(long recNo, long lockCookie) throws RecordNotFoundException, SecurityException;
(error happend : RecordNotFoundException cannot be resolved to a type)
// Returns an array of record numbers that match the specified
// criteria. Field n in the database file is described by
// criteria[n]. A null value in criteria[n] matches any field
// value. A non-null value in criteria[n] matches any field
// value that begins with criteria[n]. (For example, "Fred"
// matches "Fred" or "Freddy".)
public long[] findByCriteria(String[] criteria);
// Creates a new record in the database (possibly reusing a
// deleted entry). Inserts the given data, and returns the record
// number of the new record.
public long createRecord(String [] data)throws DuplicateKeyException;
(error happened : DuplicateKeyException cannot be resolved to a type )
// Locks a record so that it can only be updated or deleted by this client.
// Returned value is a cookie that must be used when the record is unlocked,
// updated, or deleted. If the specified record is already locked by a different
// client, the current
thread gives up the CPU and consumes no CPU cycles until
// the record is unlocked.
public long lockRecord(long recNo) throws RecordNotFoundException;
(error happened : RecordNotFoundException cannot be resolved to a type )
// Releases the lock on a record. Cookie must be the cookie
// returned when the record was locked; otherwise throws SecurityException.
public void unlock(long recNo, long cookie) throws SecurityException;
}
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