title: How can I increase performance of following code?
body: <p>I have following code that displays an Image with letters, </p>
  
  <pre><code>public class MainActivity extends Activity 
  {
      private String[] capital_letters,small_letters;
      @Override
      protected void onCreate(Bundle savedInstanceState) 
      {
          super.onCreate(savedInstanceState);
          this.requestWindowFeature(Window.FEATURE_NO_TITLE);
          this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
          setContentView(R.layout.activity_main);
      }
  
      @Override
      protected void onStart()
      {
          super.onStart();
  
          try
          {
              capital_letters = getApplicationContext().getResources().getStringArray( R.array.capital_letters );
              small_letters = getApplicationContext().getResources().getStringArray( R.array.small_letters );
  
              MyAdapter adapter = new MyAdapter ( MainActivity.this ,capital_letters,small_letters );
              ListView list = ( ListView ) findViewById( R.id.list );
              list.setAdapter( adapter );
  
              list.setOnItemClickListener( new AdapterView.OnItemClickListener() 
              {
                  @Override
                  public void onItemClick(AdapterView&lt;?&gt; arg0, View arg1, int position,long id ) 
                  {
                      Intent intent = new Intent ( MainActivity.this, LetterActivity.class );
                      intent.putExtra( "position", position );
                      intent.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
                      startActivity(intent);
                      overridePendingTransition( 0, 0 );
                  }
              });
          }
          catch ( Exception e ){e.printStackTrace();}
      }
  }
  </code></pre>
  
  <p>How can I make my code such a light weight that it works very smoothly. Smooth performance meaning, Proper declaration of variable, loops, Garbage Collection usage etc ?</p>