下面的应用程序中有一个组，组内有4个单选按钮，请在画线处填入正确的语句使程序能正确运行。

import javax.swing.*; public class OneTeam extends JFrame. { JRadioButton[] teams = new JRadioButton[3]; public OneTeam() { super("One Team"); setSize (140,160); setDefaultCloseOperation(JFrame.EXIT ON CLOSE JPanel pane = new JPanel(); teams[0] = new JRadioButton("red choose"); teams[l] = new JRadioButton("blue choose"); teams[2] = new JRadioButton("green choose"); 【 】; for (int i = 0;i ＜ teams.length;i++) { group.add(teams[i]); pane.add(teams[i]); } setContentPane(pane); } public static void main(String arguments[] { OneTeam t= new OneTeam(); ot.show(); }