class StringExample
{
    public static void main(String[] args) 
    {
        String s1="Abook on java";
        String s2="Ilike it";
        String s3="Dreamtech press";

        System.out.println("First string is: "+s1+" second string is: "+s2+" and third string is: "+s3);
        System.out.println("Length of s2: "+s2.length());
        System.out.println("Length of s3: "+s3.length());
        String concatenatedString=s1.concat(s2);
        System.out.println("Concatenated String: "+concatenatedString);
        if(s1.startsWith("A")){
            System.out.println("String s1 starts with A");
        }
        else{
            System.out.println("String s1 does not start with A");
        }
        String substring=s3.substring(5,10);
        System.out.println("Substring of string s3: "+substring);
    }
}