This document contains 30 multiple choice questions about Java programming concepts such as classes, objects, arrays, inheritance, interfaces, events and GUI components. It also includes code snippets and questions asking to write short code examples to demonstrate understanding of concepts like layout managers, event handling and calculations.
OXUS 20 is pleased to offer PART I of Java Programming Questions and Answers with details explanation to support the educational needs and hoping these series help and benefit Computer Science student, IT professionals and those who eager to learn programming and in particular Java Programming...
OXUS 20 is pleased to offer PART I of Java Programming Questions and Answers with details explanation to support the educational needs and hoping these series help and benefit Computer Science student, IT professionals and those who eager to learn programming and in particular Java Programming...
Name _______________________________ Class time __________.docxrosemarybdodson23141
Name: _______________________________ Class time: __________
Prewriting Instructions for Paper 2 (Final Paper due 4/22)
1. Your choices for Paper 2 are posted on blackboard and also listed below.
2. Choose 1 of these paper options. Notice that each choice also mentions the type of paper (comparison, etc.) My paper choice is: _________________________: paper type: _______________.
3. Read the related essay(s) in your Research and Composition textbook.
4. Thursday: write a tentative thesis for paper 2 (one sentence): ______________________________________________________________________________________________________________________________________________________________________________________________________________________.
5. Thursday: write 5 questions that you will need to answer through research to write this paper (for ex. What is the divorce rate for 2012?) Write legibly please.
1.
2.
3.
4.
5.
6. Thursday: go to the library and use the databases to locate at least three sources that will likely give you the information to answer the five questions above. At least one should be a book, at least one should be a database article. In addition, you may use your textbook, internet, or even refer to a film. Write down the all of the information about each source. You will need this information for a works cited page later or to locate the article and book again. You do not need to answer the questions right away, but if you do find the answers, take notes or make a copy of the source.
Source 1: ____________________________________________________________________________________________________________________________________________________________
Source 2: ____________________________________________________________________________________________________________________________________________________________
Source 3: ____________________________________________________________________________________________________________________________________________________________
7. Have any new questions come to mind? What are they? Write them here:
8. Have you revised your thesis? What is it? ___________________________________
_____________________________________________________________________.
9. Write a tentative first paragraph to paper 2 (this includes your thesis):
10. Turn this in Tuesday 3/25 in exchange for your last Q exercise, M&M Color Distribution.
***You need this prewriting exercise completed to receive your instructions and data for this last Q exercise and parts of this exercise will count for your attendance in a week or so.
See next page
Writing Assignment 2 Choices due on or before 4/22
Here are your choices for Writing Assignment 2 due 4/22. Additional research is required for all choices. Two visuals, tables or figures, are required. Your paper will be in MLA format with a works cited page. This paper is approximately 5 pages including a works cited page.
1. Read the essays in Chapter 8. Go .
Q3 GIVEN THE TREND EQUATION NO OF STUDENTS-3000+200 YEAR BASE: 2003-0
1.INTERPRET EQUATION RESULTS 2.FORECAST FOR 2020 3.WHEN WILL THE NO OF
STUDENTS REACH 6000
Solution
x no of years from 2003 y no of students y = 3000+200x 1) The regression
equation has a positive slope of 200 y intercept is 3000 i.e. no of students in the year 2000
Thus for every year 200 students increase 2) For 2020, x = 17, y = 3000+200(17) = 6400
3) When y =6000, 6000 = 3000+200x or x = 15 Hence in year 2018 students reach 6000
B Regression C D. All the above.
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Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
How to Split Bills in the Odoo 17 POS ModuleCeline George
Bills have a main role in point of sale procedure. It will help to track sales, handling payments and giving receipts to customers. Bill splitting also has an important role in POS. For example, If some friends come together for dinner and if they want to divide the bill then it is possible by POS bill splitting. This slide will show how to split bills in odoo 17 POS.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
1. TO Buy the Tutorial Visit Our Website
Select the best answer.
1: The .class extension on a file means that the file
a.contains Java source code.
b.contains HTML.
c.is produced by the Java compiler (javac).
d.contains a machine specific executable image.
2: Which command compiles the Java source code file Welcome.java?
a.cd Welcome.java
b.javac Welcome.java
c.java Welcome.java
d.compile Welcome.java
3: A(n) ________ enables a program to read data from the user.
a.printf
b.import declaration
c.Scanner
d.main routine
4: Which of the following is a Scanner method?
a.nextLine
b.nextText
c.nextWord
d.readNext
5: Every Java application is required to have
a. at least one public static method.
b.at least one data member.
c. a String variable which holds the name of the application.
d.a content pane and several GUI components.
6: Which of the following statements about creating arrays and
initializing their elements is false?
a. The new keyword should be used to create an array.
b. When an array is created, the number of elements must be placed in
square brackets following the type of element being stored.
2. c. The elements of an array have unknown values just after the array has
been created.
d. A for loop is an excellent way to initialize the elements of an array.
7: Assume the following class declaration.
class MyClass
{
int a;
String q;
public void firstMethod()
{
int b, ;
* 7;
+ c * a;
}
}
Mark the following statements as TRUE or FALSE.
q is a reference variable which refers to the empty string. __TRUE___ b
and c are local variables. ___TRUE____ a, b, and c are primitive data
types. ___FALSE____ MyClass is a Java application. ___FALSE____
8: Which statement below could be used to randomly select a state from
an array which contains exactly 50 strings which are the names of the
states?
1 + ( int ) ( Math.random( ) * 49 ); ( int ) ( Math.random( ) * 51 ); ( int )
( Math.random( ) * 50 ); 1 + ( int ) ( Math.random( ) * 50 );
9: To draw a single line from (0, 15) to (20, 25), call the method
_________ of the Graphics class in the paintComponent method.
a.drawLine( 0, 15, 20, 25 );
b.drawString( "single line", 0, 15 );
c.drawLine( 0, 15, 20, 10 );
d.drawLine( 15, 0, 25, 20 );
10: In the Java graphics system, coordinate units are measured in
________.
a.dots
b.pixels
c.points
d.inches
11: Which is a correct way to invoke the static method sqrt of the Math
class?
a.sqrt( 900 );.
b.math.sqrt( 900 );.
c.Math.sqrt( 900 );.
d.Math Math(); math.sqrt( 900 );.
12: When an object is concatenated with a String
a.a compilation error occurs.
3. b.a runtime error occurs.
c.the object’s toString method is implicitly called to obtain the String
representation of the object.
d.the object’s class name is used.
13: What do the following statements do?
double array[];
double[ 14 ];
a. Creates a double array containing 13 elements.
b.Creates a double array containing 14 elements.
c. Creates a double array containing 15 elements.
d. Declares but does not create a double array.
14: Consider the class below:
public class Test
{
public static void main( String args[] )
{
int a[];
int[ 10 ];
for ( int ; i <a.length; i++ )
a[ i ] = i + 1 * 2;
int ;
for ( int ; i <a.length; i++ )
result += a[ i ];
System.out.printf( "Result is: %dn", result );
} // end main
} // end class Test
The output of this Java program will be
a. Result is: 62
b. Result is: 64
c. Result is: 65
d. Result is: 67
15: Which method call converts the value in variable stringVariable to
an integer?
a. Convert.toInt( stringVariable )
b. Convert.parseInt( stringVariable )
c. Integer.parseInt( stringVariable )
d.Integer.toInt( stringVariable )
16: Which of the following is the method used to display a dialog box to
gather input?
a. showMessageDialog
b. getInput
4. c. inputDialog
d. showInputDialog
17: provides the basic attributes and behaviors of a window—a title bar
at the top of the window, and buttons to minimize, maximize and close the
window.
a. JLabel
b. JFrame
c. JSwing
d. JWindowControl
18: Which of the following does not generate an event?
a. Typing in a text field.
b. Clicking on a button.
c. Viewing the text in a label.
d. Moving the mouse.
19: When the user presses Enter in a JTextField, the GUI component
generates an , which is processed by an object that implements the
interface .
a. ActionEvent, ActionListener
b. ActionEvent, ActionEventListener
c. TextEvent, TextListener
d. TextEvent, TextEventListener
202: When the user clicks a JCheckBox, a(n) occurs.
a. CheckedEvent
b. ButtonEvent
c. ItemEvent
d. ActionEvent
21: Which method determines if a JRadioButton is selected?
a. isSelected
b. getSelected
c. selected
d. none of the above
22: The logical relationship between radio buttons is maintained by
objects of what class?
a. MutualExclusionGroup
b. RadioButtonGroup
c. Group
d. ButtonGroup
23: Which layout manager is the default for JPanel?
a. FlowLayout
b. BorderLayout
c. GridLayout
d. none of the above
24. A Java interface
a. must contain only public abstract methods.
5. b. can be implemented by any number of Java classes.
c. reference can refer to objects of any class which implements the
interface.
d. all of the above
25. Writing an application which handles mouse events can be done by
a. having a GUI class implement the KeyListener interface.
b. creating an inner class which extends the MouseAdapter class.
c. adding mouse functionality to the paintComponent method.
d. all of the above
26. Write a Java statement using printf to output the value of Math.PI,
showing 5 digits after the decimal point.
27. Write a Java statement that declares a class called MyDrawingPanel
that inherits from the JPanel class. Do not declare any methods or
member variables in this class.
28. Class Cap has been defined as a base class, and class BaseballCap
inherits from class Cap. Is the following Java statement legal? Explain
why or why not.
29. Write a few lines of code that would place 2 radio buttons labeled on
and off side by side into the top part of a JFrame based window. Assume
that the code you are writing is inside the constructor of an application
which inherits from JFrame. Declare any variables that you need. You
should only need 6-8 lines of code.
30. This Java application is supposed to do the following. There are 2
text fields for user input. The first is used to input a voltage value. The
second is used to input a resistance value in ohms. All values are floating
point values. The user clicks a button to perform a calculation. One
button causes the program to calculate and display the current flowing
through the resistor, / R. Another button causes the program to calculate
the power being dissipated by the resistor, * V. The result of the selected
calculation is displayed in a single output text area. The output string
should say something like this: “10 volts dropped across 1000 ohms
creates 0.1 amps.” Clicking of a button generates the event which causes
the program to do the selected calculation and update the output area.
The user interface has already been setup in the class that follows. Your
job is to implement the ButtonHandler nested inner class which handles
button events, does the requested calculation and displays the
appropriate result.
6. b. can be implemented by any number of Java classes.
c. reference can refer to objects of any class which implements the
interface.
d. all of the above
25. Writing an application which handles mouse events can be done by
a. having a GUI class implement the KeyListener interface.
b. creating an inner class which extends the MouseAdapter class.
c. adding mouse functionality to the paintComponent method.
d. all of the above
26. Write a Java statement using printf to output the value of Math.PI,
showing 5 digits after the decimal point.
27. Write a Java statement that declares a class called MyDrawingPanel
that inherits from the JPanel class. Do not declare any methods or
member variables in this class.
28. Class Cap has been defined as a base class, and class BaseballCap
inherits from class Cap. Is the following Java statement legal? Explain
why or why not.
29. Write a few lines of code that would place 2 radio buttons labeled on
and off side by side into the top part of a JFrame based window. Assume
that the code you are writing is inside the constructor of an application
which inherits from JFrame. Declare any variables that you need. You
should only need 6-8 lines of code.
30. This Java application is supposed to do the following. There are 2
text fields for user input. The first is used to input a voltage value. The
second is used to input a resistance value in ohms. All values are floating
point values. The user clicks a button to perform a calculation. One
button causes the program to calculate and display the current flowing
through the resistor, / R. Another button causes the program to calculate
the power being dissipated by the resistor, * V. The result of the selected
calculation is displayed in a single output text area. The output string
should say something like this: “10 volts dropped across 1000 ohms
creates 0.1 amps.” Clicking of a button generates the event which causes
the program to do the selected calculation and update the output area.
The user interface has already been setup in the class that follows. Your
job is to implement the ButtonHandler nested inner class which handles
button events, does the requested calculation and displays the
appropriate result.