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public class teclas extends KeyAdapter {
        @Override
public void keyPressed(KeyEvent que)
{
if (que.getKeyCode() == KeyEvent.VK_ENTER){buscar(jTextFiel1.getText());}
} // end keyPressed()
}
jTextField1.add ( new teclas);

public class teclas2 extends KeyAdapter {
        @Override
public void keyPressed(KeyEvent que)
{
if (que.getKeyCode() == KeyEvent.VK_ESCAPE){Systemexit(0);}
} // end keyPressed()
}

add (new teclas2());
this.add (new teclas2());
form.add (new teclas2());