Persisting data on the phone.
- By Chris Carpenter
- December 1, 2001
Java for Small Spaces
Can Java phone home?
by Chris Carpenter
Listing 1. Persisting data on the phone.
// This method stores the retrieved file in the phone's recordstore
// We are using Vector instead of ArrayList because Vector is the
// only supported collection
public void createRecordStore(Vector fileContents) {
RecordStore recordStore = null;
String recordStoreName = new String(fileName);
int recordID = 0;
// Delete the old database (if any)
try {
RecordStore.deleteRecordStore(recordStoreName);
} catch (Exception e) {
}
try {
recordStore = RecordStore.openRecordStore(recordStoreName, true);
} catch (RecordStoreException rse) {
System.err.println(rse.toString());
}
try {
byte[] incomingBytes;
Enumeration enumeration = fileContents.elements();
while (enumeration.hasMoreElements()) {
incomingBytes = ((String) enumeration.nextElement()).getBytes();
recordStore.addRecord(incomingBytes, 0, incomingBytes.length);
}
} catch (Exception e) {
System.err.println(e.toString());
}
try {
recordStore.closeRecordStore();
} catch (RecordStoreException rse) {
System.err.println(rse.toString());
}
}
About the Author
Chris Carpenter is a software engineer and architect at RoleModel Software, Inc. in Holly Springs, NC. He can be contacted at [email protected].