How to search the whole string for a specific word?

Question

I have this code which searches a string array and returns the result if the input string matches the 1st characters of a string:

for (int i = 0; i < countryCode.length; i++) {
            if (textlength <= countryCode[i].length()) {
                if (etsearch
                        .getText()
                        .toString()
                        .equalsIgnoreCase(
                                (String) countryCode[i].subSequence(0,
                                        textlength))) {
                    text_sort.add(countryCode[i]);
                    image_sort.add(flag[i]);
                    condition_sort.add(condition[i]);
                }
            }
        }

But i want to get those string also where the input string matches not only in the first characters but also any where in the string? How to do this?

Answer 1

I have not enough 'reputation points' to reply in the comments, but there is an error in the accepted answer. indexOf() returns -1 when it cannot find the substring, so it should be:

    b = string.indexOf("I am") >= 0; 

Answer 2

You have three way to search if an string contain substring or not:

String string = "Test, I am Adam";
// Anywhere in string
b = string.indexOf("I am") > 0;         // true if contains 

// Anywhere in string
b = string.matches("(?i).*i am.*");     // true if contains but ignore case

// Anywhere in string
b = string.contains("AA")  ;             // true if contains but ignore case

Answer 3

Check out the contains(CharSequence) method