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COMP 274 Week 1 Homework 1. What is the Java source filename extension? 2. Write a Java statement to display the string “The value is 100†to a user in a plain dialog box. 3. What is the command you would use to compile the file Addition.java? 4. What is the command you would use […]
COMP 274 Week 1 ilab Programming Assignment Do the following two programs: Write a Java application that inputsthree integers from the user and displays the sum, average, product, smallest and largest of the numbers. Use a Scanner object to get the input from the user. Use System.out to output the results. The average should be […]
COMP 274 Week 2 Homework 1. Can you access an instance variable from a static method? Explain why or why not. 2. Can you access a static variable from an instance method? Explain why or why not 3. Consider the case where you have two classes, ClassA and ClassB, such that ClassA contains a member […]
COMP 274 Week 3 Homework 1. Write a statement to create a JFrame object with a title of “My GUI Applicationâ€. 2. Given the object you created in question 1,write a statement to specify the window size to be 300 pixels wide and 400 pixels high? 3. What would you need to do to the […]
COMP 274 Week 3 ilab Create Java programs for the following two problems. 1. Write a Java application to display the following GUI. At this point you are only implementing the display. We are not ready to make the calculator actually do any calculations! COMP274_Lab3_v1_Prog1 This program has the following requirements: 1. The size of […]
COMP 274 Week 4 Homework 1. What is an abstract class and how does it differ from a regular class? 2. Why are abstract class constructors defined as protected? 3. Class X defines method M1( ) as abstract. Class Y inherits from Class X and implements the method M1( ). Given the following code, explain […]
COMP 274 Week 4 ilab Write a Java GUI application to do temperature conversions between Celcius, Fahranheit, and Kelvin. The GUI display should look something like the following: COMP-274_Lab4_TemperatureConversion Your program must meet the following requirements: 1. Do not use any of the GUI editing capabilities of Eclipse for this assignment. Do all the GUI […]
COMP 274 Week 5 Homework 1. Describe the graphical coordinate system in Java. Where is the origin? What units apply to the x,y coordinates? 2. How would you use the Graphics class to draw a line between 2 specific points? Give an example. 3. How do you specify a particular color to be used as […]
COMP 274 Week 5 Lab Timer and Mouse Events and Java Graphics Introduction The purpose of this week%u2019s programming assignment is to learn how to deal with events from multiple sources. In addition, we will learn how to use some of Java%u2019s graphics capabilities for drawing shapes in a display area. The programming assignment for […]
COMP 274 Week 6 Homework 1. What is the difference between throwing an exception and catching an exception? 2. How does a method declare that it can throw an exception? How does it actually throw an exception? Use Java code to illustrate your answer. 3. Explain the difference between a checked exception and an unchecked […]
COMP 274 Week 7 Homework Assignment What types of objects can be stored using the ObjectOutputStream? What is the method for writing an object? What is the method for reading an object? What is the return type of the method that reads an object from ObjectInputStream? If you serialize two objects of the same type, […]
COMP 274 Week 7 ilab Documentation The objective of this part of the lab is to create documentation using Javadoc for the Paddle Ball Game project from week 5. The following documentation requirements must be met: All commentary must use standard JavaDoc comments and tags. For every class add a class level comment including the […]
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