Question

So I want to search through a string to see if it contains the substring that I’m looking for. This is the algorithm I wrote up:

    //Declares the String to be searched
    String temp = "Hello World?";

    //A String array is created to store the individual 
    //substrings in temp
    String[] array = temp.split(" ");

    //Iterates through String array and determines if the
    //substring is present
    for(String a : array)
    {
        if(a.equalsIgnoreCase("hello"))
        {
            System.out.println("Found");
            break;
        }
        System.out.println("Not Found");
    }

This algorithm works for “hello” but I don’t know how to get it to work for “world” since it has a question mark attached to it.

Thanks for any help!

Answer 1

Take a look:
http://docs.oracle.com/javase/1.5.0/docs/api/java/lang/String.html#contains(java.lang.CharSequence)

String.contains();

To get a containsIgnoreCase(), you’ll have to make your searchword and your String toLowerCase().

Take a look at this answer:
How to check if a String contains another String in a case insensitive manner in Java?

return s1.toLowerCase().contains(s2.toLowerCase());

This will also be true for:
war of the worlds, because it will find world. If you don’t want this behavior, youll have to change your method like @Bart Kiers said.