deleterecord.java

来自「jBuilderX无线应用开发源代码」· Java 代码 · 共 44 行

import javax.microedition.midlet.*;
import javax.microedition.rms.*;
import javax.microedition.lcdui.*;

public class DeleteRecord extends MIDlet {
	//声明一个RecordStore对象
	private	RecordStore	rs;
	private	Display	display;
	private	TextBox	t;
	
	public DeleteRecord () {
		//将rs初始化为null
		rs = null;
		display	= Display.getDisplay(this);
		t = new TextBox("Message", "Record deleted!", 256, 0);
	}
	
	public void	startApp() {
		try	{
			//打开记录存储myRecordStore
			rs = RecordStore.openRecordStore("myRecordStore", false);
	        	//删除第一条记录
	        	rs.deleteRecord(1);
            
			display.setCurrent(t);
		}catch(Exception e){
			System.out.println("Error: " + e.getMessage());
		}
		
		//关闭记录存储集
		try{
			rs.closeRecordStore();
		}catch(Exception e){
			System.out.println("Error: " + e.getMessage());
		}
	}
		
	public void	pauseApp(){
	}
	
	public void	destroyApp(boolean unconditional){
	}
}