J2ME手机通讯录简易版

import java.io.*; import javax.microedition.lcdui.List; import javax.microedition.rms.InvalidRecordIDException; import javax.microedition.rms.RecordEnumeration; import javax.microedition.rms.RecordStore; import javax.microedition.rms.RecordStoreException; import javax.microedition.rms.RecordStoreFullException; import javax.microedition.rms.RecordStoreNotFoundException; import javax.microedition.rms.RecordStoreNotOpenException; public class DataOperate { RecordStore rs; int count; public DataOperate() { try { rs = RecordStore.openRecordStore("Phone", true); } catch (RecordStoreFullException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (RecordStoreNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (RecordStoreException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public void save(String str) { try { rs = RecordStore.openRecordStore("Phone", true); ByteArrayOutputStream baos=new ByteArrayOutputStream(); DataOutputStream dos=new DataOutputStream(baos); dos.writeUTF(str); dos.close(); byte[] b=baos.toByteArray(); rs.addRecord(b, 0, b.length); } catch (RecordStoreNotFoundException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } catch (RecordStoreFullException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } catch (RecordStoreNotOpenException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } catch (RecordStoreException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } public void delete(String str) { try { RecordEnumeration re=rs.enumerateRecords(null, null, false); while(true) { int id=re.nextRecordId(); byte[] b=rs.getRecord(id); ByteArrayInputStream bais=new ByteArrayInputStream(b); DataInputStream dis=new DataInputStream(bais); String temp=dis.readUTF(); if(temp.endsWith(str)) { rs.deleteRecord(id); break; } } } catch(RecordStoreNotFoundException e) { e.printStackTrace(); } catch(RecordStoreException e) { e.printStackTrace(); } catch(IOException e) { e.printStackTrace(); } } public List get() { List list=null; try { rs = RecordStore.openRecordStore("Phone", true); RecordEnumeration re; re = rs.enumerateRecords(null, null, false); count=re.numRecords(); String str[]=new String[count]; for(int i=0;i<count;i++) { byte[] b=re.nextRecord(); ByteArrayInputStream bais=new ByteArrayInputStream(b); DataInputStream dis=new DataInputStream(bais); String temp=dis.readUTF(); str[i]=temp; } list=new List("备忘录信息",List.IMPLICIT,str,null); } catch (RecordStoreNotOpenException e) { // TODO Auto-generated catch block e.printStackTrace(); }catch(InvalidRecordIDException e) { e.printStackTrace(); }catch(RecordStoreException e) { e.printStackTrace(); }catch(IOException e) { e.printStackTrace(); } return list; } }