private void jButton1KeyPressed(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_jButton1KeyPressed
    if (evt.getKeyChar() == evt.VK_ENTER) {
        jButton1.doClick();
    } else if (evt.getKeyCode() == 40) {
        btnRemove.grabFocus();
    } else if (evt.getKeyCode() == 37) {
        jList1.grabFocus();
    } else if (evt.getKeyCode() == 39) {
        jList3.grabFocus();
    }
}//GEN-LAST:event_jButton1KeyPressed