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View Compilation Error

0_0_3217441_32719\Main.java:3: 类 test 是公共的，应在名为 test.java 的文件中声明
public class test {
       ^
0_0_3217441_32719\Main.java:11: 不可比较的类型：int 和 <nulltype>
			if (scan.nextInt() == null)
			                   ^
2 错误


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