Quiz 1

String class is encapsulated inside java.lang package.

String is immutable in java because whenever we are performing changes to string object with that changes new object will get created.

toString() method is used to get the string representation of  an object.

In String class, StringBuffer, StringBuilder, wrapper classes and in all collection classes toString() method is overridden for meaningful string representation.

Object class toString() method internally class hashCode() method.

If our class doesn’t contain .equals() method then object class .equals() method will be executed which is always meant for reference compression.

charAt() method of String class is used to obtain character at specified index.

In java, length() method is used to find the length of the string.

java.sql.Date is the datatype of Date stored in database.

SimpleDateFormat can be used as

Date now = new Date();

SimpleDateFormat sdf = new SimpleDateFormat ("yyyy-mm-dd'T'hh:MM:ss");

String nowStr = sdf.format(now);

System.out.println("Current Date: " + );