Missing return statement making triangle program

Question

public String displayType(int side1, int side2,int side3)
    {
        if(( side1+side2 > side3))

            if(( side1==side2) && (side2==side3))//tell if         


        

Answer 1

Compiler is saying that You have to return something,because if all your IF conditions fail then what will it do?

you can do like this:

public String displayType(int side1, int side2,int side3)
{
    if(( side1+side2 > side3))

        {
if(( side1==side2) && (side2==side3))//tell if equalateral
        {
            return ("Equalateral Triangle.");
        }
        else if (( side1==side2) & (side2 != side3) || (side1 == side3) & (side3 != side1))//tells if isosceles
        {
            return ("Isosceles Triangle.");
        }
        else if ((side1 != side2) & (side2 != side3))//tells if scalene
        {
            return ("Scalene Triangle.");        

    }
return ("It is not a triangle");
} // missing return statement here error