Question

For Strings..

How can i Detect if the string “name” has the text “Hello” a toast will come up saying yes but if it doesn’t a toast will come up saying no?
my code:

        String ft;
    if(ft.contains("Hello")){

        Toast.makeText(main.this ,"Yes", Toast.LENGTH_SHORT).show();
        }
        else{
        Toast.makeText(main.this ,"No", Toast.LENGTH_SHORT).show();
        }

I get a error at ft on if(ft.contains(“Hello”)) {

“The local variable ft may not have been initialized”

Answer 1

You declared String, but you didn’t initialize. Initializing it is setting them equal to a value:

String ft;        // This is a declaration

String ft="";    // This is an initialization

Perhaps String ft = ""; is “declaration and initialization.

You get the error because you haven’t initialized the variable, but you use them (e.g., ft.compare()) in if condition.

So try replacing
String ft; with String ft="";