String str = "Hello";

​

//This will return true because string str starts with "He"

str.startsWith("He");

public class StringExample 

{

    public static void main(String[] args) 

    {

        String blogName = "howtodoinjava.com";

        System.out.println( blogName.startsWith("how") );               //true

        System.out.println( "howtodoinjava.com".startsWith("howto") );  //true

        System.out.println( "howtodoinjava.com".startsWith("hello") );  //false

    }

}

​

String str = "Hello, world!";

String prefix = "Hello";

​

if (str.startsWith(prefix)) {

    System.out.println("The string starts with the prefix.");

} else {

    System.out.println("The string does not start with the prefix.");

}