[問題] JAVA繪圖的問題paint函數

[supercygnus (......)]

程式碼:http://ideone.com/AweoN0


目前程式碼不能跑,請問要怎麼改才能跑
問題好像出在paint函數裡
到底要怎麼改才可以跑
真的快被搞瘋了-.-

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◆ From: 220.132.37.216
→ cooper6334:class j1223_2 is public, should be
→ cooper6334:declared in a file named j1223_2.jav