Chapter 6, Problem 4E

Differentiate parameters passing method i.e, by line, by reference, by parameter? with suitable examples.

2. Write a method isPalidrome(String arg) that determines if a String is palindrome or not. Palindrome is when a String remains the same after reversing. The method should return boolean type. For example: MADAM is palindrome.

In java language Before we write a class which is used to describe objects, let’s practice manipulating an object by calling its methods. Complete the class LeetMaker class using String methods. Remember that all the String methods are accessors. They do not change the original String. If you want to apply multiple methods to a String, you will need to save the return value in a variable. Complete the class by doing the following: Print the word in lowercase Replace "e" with "3" (Use the unmodified variable word) Print the changed word In the changed word, replace: "t" with "7" Print the changed word In this newest changed word, replace: "L" with "1" (uppercase L with the number 1). Then, print the final changed word (with all the replacements) Print the length of the word The code to print the original word is already included for you. Do not change that statement.  You will need to use the replace() method multiple times. Then print the final String. Remember that replace is an…

JAVA Practice Question for Midterm 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. 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.

Why is it asserted that the String class's length() method does not deliver accurate results?

When passing a property on to a method in the form of a parameter, there is one requirement that absolutely must be satisfied on your end. What precisely is it going to be used for?

Write a method specification for the method below.public String getDefinitionFromDictionary(String word)

Write a method that will have a C++ string passed to it. The string will be an email address and the method will return a bool to indicate that the email address is valid. Email Validation Rules: ( These rules are not official.) No whitespace allowed 1 and only 1 @ symbol Must not start with the @ symbol At least 1 period after the @ symbol. Must not start with a period after the @ symbol Program will prompt for an email address and report if it is valid or not according to the rules posted above. The program will loop and prompt me to continue.

The Hal9000 has one constructor which takes a String parameter of a name of the crew member it is interacting with. It has methods: public String getName() which gets the name public void setName(String newName) which sets a new name public String greet() which returns a string consisting of "Greetings, name" where name is the name supplied in the constructor. public String reportStatus() which returns a string consisting of "All systems are operating normally, name" where name is the name supplied in the constructor. public String execute(String command) which returns a string consisting of "I am sorry, name. I can't " + command where name is the name supplied in the constructor and command is the parameter.