Record store does not remain persistant throughout various openings of MIDLet

[Imdad Soomro]

Hi,
I am using RMS for persistent storage for my J2ME application. I store records in record store, they remain there until i close the application. when i launch application again, the data no more exist. can any one tell what could be the problem?
I also want to store records at run time. Like after installing .jar file in my mobile, i launch the application and there is textfield. User enters word in textfield and it should store in record store and should not get deleted when application is closed.

[Peter Miklosko]

Please post your code so we see what you doing...

[Imdad Soomro]

import java.util.Vector;
import javax.microedition.rms.RecordStore;

public class Add {

public void addRec(){
try{
RecordStore recordStore = RecordStore.openRecordStore("words", true );
recordStore.addRecord("a".getBytes(), 0, "Imdad".getBytes().length);
recordStore.addRecord("b".getBytes(), 0, "Asmat".getBytes().length);
recordStore.addRecord("c".getBytes(), 0, "Inam".getBytes().length);
recordStore.addRecord("d".getBytes(), 0, "Ikram".getBytes().length);
recordStore.addRecord("e".getBytes(), 0, "Shafqat".getBytes().length);

recordStore.closeRecordStore();
}catch(Exception e){}

}

public void insert(String str){
try{
RecordStore rs=RecordStore.openRecordStore("words", true);
rs.addRecord(str.getBytes(), 0, str.getBytes().length);
System.out.println("Added user");
}catch(Exception e){}

}

public Vector getRec(){

Vector vt=new Vector();
try{
RecordStore recordst=RecordStore.openRecordStore("words", true);

int u=recordst.getNumRecords();
System.out.print(u);

for(int i=1; i<=recordst.getNumRecords(); i++){
byte br[]=recordst.getRecord(i);
String tr=new String(br);
vt.addElement(tr);
}
}catch(Exception e){}
return vt;
}


}




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insert method will be called when user press insert button on a form which has textfield. The value of that text field should store in recordStore. These values should not be deleted when application is closed.

[Imdad Soomro]

My problem is solved Record Store didn't remain persistent in the J2ME emulator but when i installed the application in mobile, the record store remained persistent. The data remained their no matter how many times i close the application and open again. It created .rms file which stores the data. That file was not visible in mobile but when i see my folders in computer, it also shows the .rms file along with other files.

[Pradeep Gudipati]

https://coderanch.com/t/499206/JME/Mobile/ME-record-management-system-concept