将JTabbedPane中的选项卡放在前面？

所以，我的问题是：当选择“周长”从JComboBox时，我会怎样做，使标签（JTabbedPane的内召开）将显示在最前面？并与区域或其他选项卡类似。将JTabbedPane中的选项卡放在前面？

private void jComboBox1ActionPerformed(java.awt.event.ActionEvent evt) {           
    String selectedItem = jComboBox1.getSelectedItem().toString(); 

    if(selectedItem != null) 
    { 
     //if perimeter option selected, show the tab for it 
     if(selectedItem.equals("Perimeter")) 
     { 
      //bring the permeter tab to the front, all contained within a tabbedPane 
     } 

     if(selectedItem.equals("Area")) 
     { 
      //bring the area tab to the front, all contained within a tabbedPane 
     } 
    } 
}

来源

2011-03-06 Wesnc