check if string contains capital letters python code example

Example 1: javascript contains substring

var str = "We got a poop cleanup on isle 4.";
if(str.indexOf("poop") !== -1){
	alert("Not again");
}
//use indexOf (it returns position of substring or -1 if not found)

Example 2: how to check if a string contains only alphabets and space in java

class IsAlpha
{
    public static boolean isAlpha(String s) {
        return s != null && s.chars().allMatch(Character::isLetter);
    }
 
    public static void main(String[] args)
    {
        String s = "ABCD";
        System.out.println("IsAlpha: " + isAlpha(s));
    }
}