作业的左侧必须是变量

Question

我收到此错误“作业的左侧必须是变量”

public class employee {
    public static void main (String args[ ]){
          for(int i = 0; i < 10; i++)
           int sum = 10; // getting error over here
    }
}

但是，如果我按如下所示更改代码，则错误消失

public class employee {
    public static void main (String args[ ]){
          for(int i = 0; i < 10; i++) { //add braces over here
                 int sum = 10; 
          }
    }
}