dalvik format error in android

[beta jane]

 
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ListActivity;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.TextView;


public class mylist extends ListActivity {
	TextView t;
	private ArrayAdapter mediaList;
	@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
         setContentView(R.layout.songlist);
         String[] mStrings = new String[] 
                                      	{    			
                                      		"1.Erase all","2.File info"
                                      	};
         mediaList = new ArrayAdapter(this,R.layout.listitem1, mStrings);
         setListAdapter(mediaList);
         t=new TextView(this);
         t.setClickable(true);
         t=(TextView)findViewById(R.id.Rsk_Options);
         t.setOnClickListener(clickListener); 
	}
	public OnClickListener clickListener = new OnClickListener() {

        public void onClick(View v) {
        	//Toast.makeText(mylist.this, "TextClicked", 100).show();
        	showDialog(1);
        }
    };
    @Override
	protected Dialog onCreateDialog(int id)
    {
    	if(id==1)
    	{
    		return new AlertDialog.Builder(mylist.this)
    		.setTitle("Options")
			.setIcon(null)    					
			.setAdapter(mediaList, new DialogInterface.OnClickListener()
			{
				public void onClick(DialogInterface dialog, int which) 
				{
					new AlertDialog.Builder(mylist.this)
				.setMessage(" ")
				.show();
			}
		})
			
				.create();
    	}
			return null;
    }
    
    }




   

Iam getting this error:

[2009-10-22 10:13:52 - ring]Could not find ring.apk!
[2009-10-22 10:37:45 - ring]
trouble processing "java/security/cert/CertPathParameters.class":
[2009-10-22 10:37:45 - ring]
Attempt to include a core VM class in something other than a core library.
It is likely that you have attempted to include the core library from a desktop
virtual machine into an application, which will most assuredly not work. If
you really intend to build a core library -- which is only appropriate as
part of creating a full virtual machine binary, as opposed to compiling an
application -- then use the "--core-library" option to suppress this error
message. If you go ahead and use "--core-library" but are in fact building
an application, then please be aware that your build will still fail at some
point; you will simply be denied the pleasure of reading this helpful error
message.
[2009-10-22 10:37:45 - ring]1 error; aborting
[2009-10-22 10:37:45 - ring]Conversion to Dalvik format failed with error 1
[2009-10-22 10:42:20 - ring]
trouble processing "java/security/cert/CertPathParameters.class":
[2009-10-22 10:42:20 - ring]
Attempt to include a core VM class in something other than a core library.
It is likely that you have attempted to include the core library from a desktop
virtual machine into an application, which will most assuredly not work. If
you really intend to build a core library -- which is only appropriate as
part of creating a full virtual machine binary, as opposed to compiling an
application -- then use the "--core-library" option to suppress this error
message. If you go ahead and use "--core-library" but are in fact building
an application, then please be aware that your build will still fail at some
point; you will simply be denied the pleasure of reading this helpful error
message.
[2009-10-22 10:42:20 - ring]1 error; aborting
[2009-10-22 10:42:20 - ring]Conversion to Dalvik format failed with error 1

[beta jane]

please respond

[Monu Tripathi]

The error message tells you what is wrong:

Attempt to include a core VM class in something other than a core library.
It is likely that you have attempted to include the core library from a desktop
virtual machine into an application, which will most assuredly not work. If
you really intend to build a core library -- which is only appropriate as
part of creating a full virtual machine binary, as opposed to compiling an
application -- then use the "--core-library" option to suppress this error
message. If you go ahead and use "--core-library" but are in fact building
an application, then please be aware that your build will still fail at some
point; you will simply be denied the pleasure of reading this helpful error
message.

You probably are using class files that were compiled using a Statndard Java compiler to be run on JVMs for desktop systems. Android uses Dalvik Virtual machine and your code fails at the verification stage.

Maybe you need to recompile the class files...