database.java

来自「J2ME的手机游戏 马里奥版本的是男人就下一百层」· Java 代码 · 共 52 行

package Blocks;
import java.io.IOException;
import java.io.InputStream;
import java.io.ByteArrayOutputStream;
import javax.microedition.rms.*;

public class Database {
    public static final String DATABASE_NAME = "High Scores";
    public RecordStore rs = null;
    public boolean empty = true;
    public static final int recordsNum = 6;
    public static final int bufferSize = 20;
    public Database() {
        openDatabase();
    }
    
    private void openDatabase() {
        try {
            rs = RecordStore.openRecordStore(DATABASE_NAME, true);
            if (rs.getNumRecords() > 0) {
                empty = false;
            } else {
                populateDatabase();
            }
        } catch(RecordStoreException e){
            e.printStackTrace();
        }
    }
    
    public void closeDatabase(){
        try{
            rs.closeRecordStore();
        } catch(RecordStoreException e){
            e.printStackTrace();
        }
    }
    
    private void populateDatabase(){
        try{
            fillText("/records.txt");
        } catch( IOException e){
            e.printStackTrace();
        } catch( RecordStoreException e){
            e.printStackTrace();
        }
    }
    
    private void fillText(String fileName) throws IOException, RecordStoreException{
        InputStream is = this.getClass().getResourceAsStream(fileName);
        if(is != null){
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            //缂撳啿鍖