2 回答定義報錯cannot find symbol

3 回答error: cannot find symbol

5 回答顯示25行錯誤HelloWorld.java:25: error: cannot find symbol System.out.println(scores[i]); ^ symbol: variable i location: class HelloWorld 1 error

1 回答提交后輸出：/85/1598/H2tH/HelloWorld.java:15: error: cannot find symbol Arrsys.sort(chengji); ^ symbol: variable Arrsys location: class HelloWorld 1 error，這是什么錯誤，請教。

5 回答sum cannot be resolved to a variable錯誤