Java – (floating point value, integer value, long value) how to give unexpected results?

import java.util.*;

import java.util.*;
import java.lang.*;

class Main
{
    public static void main (String[] args) throws java.lang.Exception
    {
        Float f=new Float(3.1);
                Integer i=new Integer(1);
                long l=2;
                System.out.println("Result is "+l+f+i);
    }
}

Output: the result is 23.11

I saw the above code somewhere I tried to find the reason behind this unexpected output, but failed Please provide some links or references or explanations

Additional information: system out. Println (L f I "is the result"); 6.1 is the result This means that the order of strings and numbers affects the output

Solution

Add a focus here for other answers:

Whenever a string connection is made, the toString () method is called for each element in the connection So, the element to connect is,

"Result is ",l,f,and i

For primitives, Auto@R_288_2419 @Ing first converts them into wrapper classes, and each calls the toString () method, which is what happens