[android-developers] problem for button

when I click ok nothing works
herre is my code
import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnKeyListener;
import android.widget.Button;
import android.widget.EditText;

public class main extends Activity implements OnClickListener,
OnKeyListener {

EditText editText1;
Button ok ;
String C ;

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
editText1= (EditText)findViewById(R.id.editText1);
ok= (Button)findViewById(R.id.ok);
editText1.setOnClickListener(this);
ok.setOnClickListener(this);
}

public void sendFeedback(View button) {

C = editText1.getText().toString();
}

@Override
public boolean onKey(View arg0, int arg1, KeyEvent arg2) {
// TODO Auto-generated method stub
return false;
}

@Override
public void onClick(View arg0) {
sendFeedback(ok);

}
}

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