创建添加1点并清除分数的按钮

Question

试图弄清楚如何在java中正确编码。

Team1           Team2

0                10
(+1) (-1)         (+1) (-1)

     (CLEAR ALL SCORES)

(clear team1)         (clearteam2)

我有team1的变量和team2的变量。当你点击+1时，分数上升1点，减去1则减少1点，除非变量设置为0.按钮清除变量和单独的按钮以清除一侧或另一侧

http://i.imgur.com/AiBBc.png