memory.java

非富多彩的十六个J2ME的例子

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.util.*;

public class memory extends MIDlet implements CommandListener
{
   Display dis;
   Form frm1,frm2;
   Ticker tick1,tick2;
   Command cmdok=new Command("OK",Command.OK,1);
   Command cmdexit=new Command("Exit",Command.EXIT,0);
   Command cmdback=new Command("Back",Command.BACK,2);
   
   public memory()
   {
   	
   }
   
   public void startApp() throws MIDletStateChangeException
   {
   		dis=Display.getDisplay(this);
   		frm1=new Form("SaveMyMoney");
   		frm2=new Form("Information");
   		tick1=new Ticker("Welcome to the world of moblie banking");
   		StringItem str=new StringItem("Welcome to SaveMyMoney bank","");
   		Calendar can=Calendar.getInstance();
   		int date=can.get(Calendar.MONTH);
   		String date1=Integer.toString(can.get(Calendar.DAY_OF_MONTH))+ "/"+Integer.toString(can.get(Calendar.YEAR));
   		Calendar can1=Calendar.getInstance();
   		String time=Integer.toString(can1.get(Calendar.HOUR)) +":"+Integer.toString(can1.get(Calendar.MINUTE))+":"+Integer.toString(can1.get(Calendar.SECOND));
   		Runtime run=Runtime.getRuntime();
   		String totalmenory=Long.toString(run.totalMemory());
   		String freemenory=Long.toString(run.freeMemory());
   		tick2=new Ticker(freemenory + ";" +totalmenory);
   		//tick3=new Ticker(totalmenory);
   		String month="0";
   		switch(date)
   		{
   		    case 0: month="January";
   		            break;	
   		            
   		    case 1: month="February";
   		            break;	        
   		            
   			case 2: month="March";
   		            break;	
   		            
   		    case 3: month="April";
   		            break;	
   		            
   		    case 4: month="Mary";
   		            break;
   		            
   		    case 5: month="June";
   		            break;	        
   		            	        
   		    case 6: month="July";
   		            break;
   		            
   		    case 7: month="August";
   		            break;	
   		            
   		    case 8: month="September";
   		            break;	        
   		            
   			case 9: month="October";
   		            break;	
   		            
   		    case 10: month="November";
   		            break;	
   		            
   		    case 11: month="December";
   		            break;
   		     
   		                    
   		            
   		}
   	
   		frm1.addCommand(cmdexit);
   		frm1.addCommand(cmdok);
   		frm2.addCommand(cmdexit);
   		frm2.addCommand(cmdback);
   		frm1.setTicker(tick1);
   		frm1.append(str);
   		frm2.append(date1);
   		frm2.append(new StringItem("","Date:"+month+","));
   		frm2.append(new StringItem("","Time:"+time));
   		frm2.setTicker(tick2);
   		
   		frm1.setCommandListener(this);
   		dis.setCurrent(frm1);
   	
   	
   }
   
   public void pauseApp()
   {
   	
   	
   }
   
   public void destroyApp(boolean unconditional)
   {
      notifyDestroyed();	
   	
   }
   
   public void commandAction(Command c,Displayable ds)
   {
   	   if(c==cmdexit)
   	     destroyApp(true);
   	   else if(c==cmdback)
   	      showform1();
   	   else
   	      showform2();
   	
   }	
   
   public void showform1()
   {
       frm1.addCommand(cmdexit);
       frm1.addCommand(cmdok);
       frm1.setTicker(tick1);
       frm1.setCommandListener(this);
       dis.setCurrent(frm1);	
   	
   }
   
   public void showform2()
   {
       frm2.addCommand(cmdexit);
       frm2.addCommand(cmdback);
//       frm2.setTicker(tick3);
       frm2.setCommandListener(this);
       dis.setCurrent(frm2);	
   	
   }
   
	
}