java type mismatch: cannot convert from long to int

In Java programming, type mismatch errors are a common problem. When we try to convert a long value to an int, we get the error "java type mismatch: cannot convert from long to int". This error message means that we are trying to convert a data type with a larger range to a data type with a smaller range, resulting in the risk of data loss or overflow. In this article, PHP editor Xinyi will analyze the cause of this error for you and provide solutions to solve it.

Question content

long A[]=new long[1000];
   Scanner a=new Scanner(System.in);
   for(long I=0;I<A.length;I++)
   {
    A[I]=a.nextLong();//error
   }
   return true;
}

This is why I'm getting a type mismatch: cannot convert from long to int

I don't understand why we get type mismatch because i is long and a[] is also long So why do we get a long to int type mismatch.

Solution

Use int instead of long in the for loop:

long A[]=new long[1000];
    Scanner a=new Scanner(System.in);
    for(int I=0;I<A.length;I++)
    {
        A[I]=a.nextLong();//error
    }

Unable to index long type array:https://www.php.cn/link/6dfa678a0fa26a0b36addfbc8fdc23e1

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