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Java | JSP | JSF
Evaluate the JAVA code snippet below, then motivate why this is representative of good programming practices or not.
public class pattern{ public static void main(string[] args){ int rows = 5; for(int i = 1; i <= rows; ++i){ for(int j=1;j<=I;++j){ system.out.print(“*”); } System.out.println(); } }
public class pattern{ public static void main(string[] args){ int rows = 5; for(int i = 1; i <= rows; ++i){ for(int j=1;j<=I;++j){ system.out.print(“*”); } System.out.println(); } }
Java | JSP | JSF
Give an example of a class and an example of an object. Describe what a class is, what an object is, and how they are related. Use your examples to illustrate the descriptions.
Java | JSP | JSF
Write a Java program that displays at least four lines of your favorite song. Name the class as FavoriteSong.java and add meaningful comment to the class.
Java | JSP | JSF
Give an example of a while loop, then provide the equivalent do-while loop and for loop. Then give a different example of a do-while loop, along with the equivalent while loop and for loop. Finally, give an example of a for loop, along with the equivalent while loop and do-while loop. Use your examples to illustrate the advantages and disadvantages of each looping structure, and describe those advantages and disadvantages.
Java | JSP | JSF
Create an class called Book the following attributes
like,
book_id as integer
book_name as String
book_price as double
book_write as String
create another class called BookBO
which consist one field two methods like
Book[] book
i)public void setBook(Book[] book)
ii)public Book[] getBook()
iii)public boolean searchBook(int bookid)
create another class called Main to access all other class to save and extract the information of 5 books.
Java | JSP | JSF
Consider the following interface definition that is written without methods. Instead, it has comments followed by blank areas denoted by …………… to describe what each method has to
do. Add method definitions in those blank areas as indicated in the comment. Check exceptions
also.
public interface Quiz {
findQuiz (id) // Return the specific quiz
startQuiz(id) checkSoultions( ) //shows solutions of the quiz questions
getResult( ) //information about correct, incorrect answers, show score }
do. Add method definitions in those blank areas as indicated in the comment. Check exceptions
also.
public interface Quiz {
findQuiz (id) // Return the specific quiz
startQuiz(id) checkSoultions( ) //shows solutions of the quiz questions
getResult( ) //information about correct, incorrect answers, show score }
Java | JSP | JSF
What are wrapper classes and why are they useful for ArrayLists? In your answer, include examples of autoboxing and unboxing.
Java | JSP | JSF
Describe how you would develop object-oriented features of Java for the Quiz program developed in the Programming Assignments. In particular, describe how the program could use each of the following: class variables, instance variables, inheritance, polymorphism, abstract classes, "this", "super", interfaces, and event listeners.
Java | JSP | JSF
What are wrapper classes and why are they useful for ArrayLists? In your answer, include examples of autoboxing and unboxing.
Java | JSP | JSF
Give examples showing how "super" and "this" are useful with inheritance in Java. Include examples of using "super" and "this" both as constructors and as variables.
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#339914 on Dec 2023
#339914 on Dec 2023