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View Compilation Error

0_0_35420840_21463\Main.java:1: 错误: 类sum是公共的, 应在名为 sum.java 的文件中声明
public class sum{
       ^
0_0_35420840_21463\Main.java:2: 错误: 找不到符号
    public static void main(string[] args){
                            ^
  符号:   类 string
  位置: 类 sum
0_0_35420840_21463\Main.java:6: 错误: 找不到符号
    sum = a+b;
    ^
  符号:   变量 sum
  位置: 类 sum
0_0_35420840_21463\Main.java:7: 错误: 找不到符号
    return sum;
           ^
  符号:   变量 sum
  位置: 类 sum
4 个错误


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