Midterm - CIT 111 - Intro To Java

Declare an Integer, defined name and values are below.Integer Name is mynumbermynumber value is 22

Write out how you would import the class "java.util.Scanner"?

Declare a String and assign a value to the string as you would in Java programming code.1. String name is: city2. City Name is: Pittsburgh

Below is a simple Frame program we worked on in class. See what is missing and write it below? import javax.swing.*; public class SimpleFrame extends JFrame{ public SimpleFrame(){super("Frame Title");setSize(300,522);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setVisible(true); } private static void setLookAndFeel(){try {UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");   } catch(Exception exc){//ignore error }} public static void main(String[]arguments){setLookAndFeel();SimpleFrame sf = new SimpleFrame();//sf.setVisible(false);} }

Write out the main class of a java class program

In the following module you have a main class, and a method called void. Write out how you would call the Void method?//Main Class public static void main(String[] args) {// TODO Auto-generated method stub  } //Method public static void Info(){        //Do something...        }

What would be my output with the following source code?String lastName = "Walker";String firstName = "Neil";String Name = lastName + " " + firstName;System.out.println(Name);

Is a Container object in GUI programming a primitive variable that contains...    

• True

• False

The size of a frame on the screen is measured in pixels

• True

• False

What is the difference between private and public functions

• Public can be used by anyone, private can only be used by other code in the class you are writing

• Public are free

• Public can't be used

• Public is only for .NET

A method can be defined within the body of another method.  This is known as nesting methods?

• True

• False

To use the method Math.sqrt(x) you must import the package java.lang.

• True

• False

Void methods are always stand-alone statements

• True

• False

It is possible to create several methods with the same name in a single class

• True

• False

Is the name of the Swing class used for frames called SwingFrame

• True

• False

When you create a JFame object it is not automatically displayed.

• True

• False

A requirements document may specify that a new program be developed or they may specify updates to an existing program.

• True

• False

You may declare an unlimited number of variables in a statement as long as the variables are the same data type

• True

• False

As you develop a Java program you can use Eclipse to watch the stock options online

• True

• False

A syntax error occurs when there's a syntax error in a Java Statement

• True

• False

A console application uses a graphical user interface

• True

• False

A class is an object or a set of objects that share a common structure but not a common behavior

• True

• False

What is the size of a Char in Java

• 4 Bit

• 16 Bit

• 8 Bit

• 7 Bit

A Class is

• Object

• Variable

• Executable

• Program

What is a program? Choose between the examples below

• Wakeup, Brush my teeth, Floss my teeth, shave, and trim my eye brows

• Drive a car, Wake up in the morning, yawn at work, Take a nap at night

• Jump out of your chair at work, Go fishing on Lake Erie

• Jump and lay down

What was the name of the team at Sun Systems that developed Java

• Blue man Group

• Green Team

• Gurus

• Microsoft + Apple

A Data item is blank when it cannot be changed while a program is running

• Input

• Scanner

• Constant

• Boolean

Is a named memory location that you can use to store a value

• Variable

• Constant

• Integer

• Reference

Is a built-in class that provides you with the means for storing and manipulating character strings

• Boolean

• String

• Remainder

• Integer Division

A Dialog box asks a question and provides a text field in which the user can enter a response.

• Output

• Input

• Console

• String

The extension for a Java source file is

• .txt

• .jv

• .java

• .aspx

In Java, you use variables of type to store integers, or whole numbers

• Int

• Plus Sign

• Single

• Arithmetic

What window does Eclipse use to get input from a console application

• DOS

• UNIX

• Console Window

• Excel

To create a java source file you use a

• SQL Server

• Text Editor

• Google Chrome

• Write on a Chalkboard

Java runs on which systems

• Apple

• Windows

• Linux

• All Above

What will be the value of “num” after the following statements? int num; num = (5+4); num = num / 9; num = 9;

• 9

• Num

• 1

• 0

With inheritance, a derived subclass object can directly access any

• Protected Sub Class

• Public Super Class

• Private Subclass

• Stingray Class

What does GUI stand for

• Great Unicorn Investment

• Graphical User Interface

• Georgia Utah Iowa

• Graphical User Intercase

Which is not correct

• An object is a variable, where its type is the class used to declare the variable

• An objects exists in memory in run time

• A class needs to be instantiated as a object before

• Class and objects are just different names for the same thing

Choose the best definition of an object

• Instance of a class

• A Thing

• NFL Superstar

• Class Variable

Upon clicking the X (close) button on a window, it looks like you have "killed" the program, when in reality it keeps on running, but you see no frame.  This happened because you forgot to use the setDefaultCloseOperation( ) method so by default it used 

• JFrame.HIDE_ON_CLOSE

• JFRAME.EXIT_ON_CLOSE

• JFrame.DO_NOTHING_CLOSE

• JFrame.DISPOSE_ON_CLOSE

This is a data type that can hold 14 or 15 significant digits of accurarcy

• Integer

• Float

• Double

• String

What is the value that is returned in the following method? public static int getVolume() {   int v;    v = 23;   if (v < 50) {      return 50;   }   return v;}

• 50

• 12

• 100

• 233

How do you import all the classes in the AWT and Swing packages

• Import awt.* import.javax.swing.*

• Import awt/swing

• Import awt and swing;

• Do nothing

Which of the following sets the frame to 300 pixels wide by 200 high

• Frm.setVisible(300,200);

• Frm.setSize( 300, 200 );

• Frm.paint( 300, 200 );

• Frm.paintanddry( 300, 200 );

Choose the data type for value of true

• Double

• Int

• String

• Boolean

Following code will result in: class A { public static void main(String [] args) {A a = new B(); }} class B extends A {}

• Compile error

• Runtime Exception

• No Errors

• Output B

A class can't be declared

• Private

• Default

• Static

• Protected