Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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JAVA Practice Question for Midterm

  1. Write a class with a constructor that accepts a String object as its argument. The class should have a method that returns the number of vowels in the string, and another method that returns the number of consonants in the string. Demonstrate the class in a program by invoking the methods that return the number of vowels and consonants. Print the counts returned.
  2. Imagine you are developing a software package for an online shopping site that requires users to enter their own passwords. Your software requires that users’ passwords meet the following criteria:
  • The password should be at least six characters long.
  • The password should contain at least one uppercase and at least one lowercase letter.
  • The password should have at least one digit.

a program that asks the user to enter a password, then displays a message indicating whether it is valid or not.

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