View Compilation Error

0_0_30227430_23065\Main.java:3: 错误: 需要'{'
      public class Main [
                       ^
0_0_30227430_23065\Main.java:6: 错误: 不是语句
while (sc.hasNext()) f
                     ^
0_0_30227430_23065\Main.java:6: 错误: 需要';'
while (sc.hasNext()) f
                      ^
3 个错误