Boolean Value (true Or False) Randomly Set?

Jun 15, 2014

I have the code and it works very well, but my professor wants us to use Junit testing to test our code. I've never used JUnit before, how it works. Is it possible to have a boolean value (true or false) randomly set?

Here is the code I need to test:

package musicalinstruments;
class MusicalInstrument {
public String name;
public boolean isPlaying;
public boolean isTuned;
public MusicalInstrument(){
isPlaying = false;
isTuned = false;

[Code]...

View Replies


ADVERTISEMENT

True And False / Scanner

Jul 7, 2014

My goal is to ask them for their name and if they got it right then it says yes while if they wrote it wrong, it would say no.

Java Code: public static void main(String[] args) {
Scanner name = new Scanner(System.in);
System.out.println("What is your name?");
String sname = name.nextLine();
name.close();
System.out.println("Are you sure it's " + sname + "?");
Scanner tfname = new Scanner(System.in);
String stfname = tfname.next();

[code]....

View Replies View Related

User Input True False Questions

Jan 11, 2015

Create an application that generates a quiz. Prompt for the user's first and last name, college major, and confidence in test taking (high, medium, or low). The quiz should contain at least five true/false questions about horticulture. When the user selects the correct answer, a message of positive reinforcement should be displayed. If the user selects the incorrect answer, the correct answer should be displayed with a message of constructive criticism. At the end of the quiz, display the number of correct and incorrect answers as well as the percentage of correct responses for each user.

import java.util.Scanner;
class HorticultureQuiz { 
public static void main(String[] args){

[Code].....

View Replies View Related

Truth Table - Display 1s And 0s Instead Of True False

Feb 26, 2005

I'm supposed to take this truth table and alter it so it displays 1's and 0's instead of true false. I'm assumed to do this I would just need to change the variable type and replace true and false with 1 and 0 but every way I try this does not work.

//a truth table for the logical operators.

class LogicalOpTable {
public static void main(String args[]) {
boolean p, q;
System.out.println("P Q AND OR XOR NOT");
p = true; q = true;
System.out.print(p + " " + q +" ");

[Code] ....

View Replies View Related

How To Make Panels Visibility Go False / True With Actionlistener

Jan 28, 2014

I'm trying to create a program that has two labels... one in the top left and one in the top right... so far when i run it only the one in the top right (label2) shows... also In the program there will be multiple button and when I click a button it will show a different panel and then i can go back to the first panel to select other panels... so far i haven't figured out how to make panels visibility go false/true with actionlistener. last thing... when i have more then one panel added to the frame none of them show up.

Java Code:

//Matthew
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Test{
public static void main(String[] args){

[code]...

View Replies View Related

True / False Result Cannot Be Printed Due To Variable Answer

Jun 30, 2014

Code in the book is written exactly like this:

import java.util.Scanner;
public class AdditionQuiz {
public static void main (String[] args){

//Generate random two integers using utility System.currentTimeMillis
int n1 = (int)(System.currentTimeMillis() % 10);
int n2 = (int)(System.currentTimeMillis() / 7 % 10);

[Code] ....

however the true/false result can not be printed due to the "answer" variable...

View Replies View Related

User Input 2 Ints - Output True If One Is In Range Otherwise False

May 14, 2014

How do I make it so that if both numbers are entered between 10 and 20 it will print false?

The assignment: Ask the user to enter 2 ints. Output "true" if one of them is in the range 10 - 20 inclusive, but not both. Otherwise output "false"

12 99 → true
21 20 → true
8 99 → false
15 17 → false

import java.util.Scanner;
 public class Practice {
 public static void main(String[] args) {
 //get user input
Scanner user_input = new Scanner(System.in);
System.out.print("Enter a number: " );

[Code] ....

View Replies View Related

Java Method - Return True If String Can Be Found As Element Of Array And False Otherwise

Mar 17, 2014

I am new to Java and would like to ask how to do this question specifically:

Code a Java method that accepts a String array and a String. The method should return true if the string can be found as an element of the array and false otherwise. Test your method by calling it from the main method which supplies its two parameters (no user input required). Use an array initialiser list to initialise the array you pass. Test thoroughly.

View Replies View Related

How Boolean Finished Is Set To False And Breaks While Loop

Sep 11, 2014

I'm having trouble understanding how this loop is broken, I can't understand how the boolean finished is set to false and breaks the While loop.

public void run()
{
char answer;
boolean finished = false;
while(!finished)// when false loop is broken

[Code] ....

View Replies View Related

Paint Not Looping Until Boolean Is True

Jan 19, 2015

I have a piece of code for an applet that I want to run as the main applet code, and I want it to loop until a boolean is true, but it needs to paint while the code is looping. Here is the relevant part of my code ....

public void paint(Graphics g)
{
g.drawImage(background, 0, 0, this);
if(over == false)
{
tick();

[Code] ....

(I have tried replacing the if with a for, that does not work.)

View Replies View Related

2D Boolean Array - Gain A Value When All Elements Have Been Turned True

Feb 2, 2014

I'm creating a 4x4 2D array. I need to be notified, or gain a value when all elements have been turned true. Is this as simple as

"If the2DArray[] = true { blah blah }" ?

View Replies View Related

Static Method - Take Three Boolean Inputs And Returns True If Odd Number

Jun 28, 2014

Write a static method odd() that takes three boolean inputs and returns true if an odd number of inputs are true, and false otherwise.

View Replies View Related

Binary Search Returning False

Apr 15, 2014

The problem is it is returning -2, and also returning false when it should be true. There is no error it just is not working correctly.

import java.util.Arrays;
import java.util.Scanner;
/**
* This Script will allow you to add e-Mails and than beable to search for them.
*/
public class eMailSeacher
{
public static void main(String[] args)

[Code] ....

1. Enter an Email
2. Find an existing email
3. Exit
1
Enter the users E-Mail:
josh
-1
Insertion successful.

ans so on .....

View Replies View Related

JCheckBox Is True With Some Value

Jul 30, 2014

I have 3 classes

ARCHIVIO that contain List<Persona>
PERSONA that contatin List<SmartCard> and get/set ORGANIZZAZIONE
ORGANIZZAZIONE

I am looking for a way in java for give me back in a table with checkbox if a PERSONA getOrganizzazione (this is also null value)

public Object getValueAt(int rowIndex, int columnIndex) {
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
if(columnIndex == 0) {
return ?????????????
}
return null;

[Code] ....

View Replies View Related

Servlets :: How To Set Httponly To False For A Secure Cookie In 2.5

Mar 26, 2015

As below i m creating cookie .

Cookie myCookie = new Cookie("myck", value);
myCookie.setSecure(true);
response.addCookie(myCookie);

I am trying to read that cookie in javascript as below.

var cookieValue = $.cookie("myck");

I can see the cookie in the browser. However the read is not happening I tried to set httponly to false

myCookie.setHttpOnly(false);

However it is throwing compilation error as my servlet version is 2.5

Is there any way to get the cookie in javascript?

View Replies View Related

SetVisible Not Working When Starting On False (AWT Label)

Jul 24, 2014

I'm trying to create a Label using AWT (not swing) that is invisible on startup but shows up when pressung a button. Here's the relevant code:

Label:

updated = makeConfirmedLabel("Updated!");
updated.setVisible(false);

Button:

update = new Button("Update");
update.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent evt) {
MainComponent.updateComponents();
System.out.println(updated.isVisible());
updated.setVisible(true);
System.out.println(updated.isVisible());
}
});

When I press the button I get the following output in console:
false
true

If I start with setVisible(true) and use updated.setVisible(!updated.isVisible()) it works fine. Why can't I start with it hidden??

I tried to use updated.revalidate() after setting it visible. That made it work but it makes the whole UI flicker when pushing the button which isnt desired.

View Replies View Related

String Declaration - Check A / B Returns False

Jan 30, 2014

I have doubts in string declaration. As I know we can declare string in two ways:

1. String a=new String("Hello");
2. String b="Hello";

What is exact difference between them? Another thing is when I check (a==b) it retuns me false, but when I check a.equals(b) it returns me with true. Why So?

View Replies View Related

Determine If There Is Path From One Vertex To Another - Why Is This Returning False

Dec 7, 2014

This method pretty much determines if there is a path from one vertex to another. When I check to see if there is a path from 5 to 2 (which there is) it return false. However, when I create a driver method, it return true (which it should). Why? It should never reach outside of the else because the condition is met, right???

Here is the graph:

0 1 2 3 4 5
------------
0| 0 1 1 0 0 0
1| 0 0 0 0 0 0
2| 0 0 0 1 0 0
3| 1 0 0 0 0 0
4| 0 0 1 0 0 1
5| 0 1 0 1 0 0

Path: 5 points to 1 and 3 (1 does not have a path to anything). 3 points to only 0. 0 points to 1 and 2. Thus there is a path from 5 to 2.

Here is the code without the driver (the one that is returning false, even tho it should be true)

public boolean existsPath(int x, int y){//x = 5, y = 2
stack.push(x);//mark x as visited
if(x == y){//path found
stack.removeAllElements();
return true;

[Code] ....

View Replies View Related

Queues - IsEmpty Method Only Returns False

Jan 29, 2015

My isEmpty method only returns false. Is something wrong? I printed the empty and not empty for testing purposes.

//determines if there are any items in the queue
public boolean isEmpty() {
if (front == -1 && rear == -1) {
System.out.println("empty");
return true;
} else {
System.out.println("not empty");
return false
}
}

View Replies View Related

Check If Height Is A Letter Between A To J - If Statement Always False

Jun 22, 2014

Why isn't heig ever equal to heightShipArray[count] no matter what letter I type in

String[] heightShipArray = {"A", "a", "B", "b", "C", "c", "D", "d", "E",
"e", "F", "f", "G", "g", "H", "h", "I", "i", "J", "j"};
boolean trueHeight = true; // checks if height is a letter between a-j/A-J
do {
Terminal.printLine("Input height with letters A to J");

[Code] ...

View Replies View Related

Dynamic Enum - How To Make DIME(10) False

Apr 20, 2015

I wrote a simple enum and a test class. The enum represents us coins and my test class uses the enum to calculate the change with the least number of coins. For example, I pass in 95 cents, I get back 3 quarters, 2 dimes. It all works just fine, easy to implement and I see why I should use an enum. Then I thought, what if the person is out of dimes. How could I tell the enum to skip dimes in it's switch statements? How would I make DIME(10) false?

View Replies View Related

JSP :: How To Set Scripting-invalid True

May 12, 2014

I was trying to set scripting-invalid true , but even after setting it to true I am able to use scripting. This is the web.xml under WEB-INF

<web-app>
<jsp-config>
<jsp-property-group>
<url-pattern>*.jsp</url-pattern>
<scripting-invalid>
true
</scripting-invalid>
</jsp-property-group>
</jsp-config>
</web-app>

And This is the jsp page

<html>
<body>
<!-- Here I am going to use scripting like scriptlet,expression and other element like jsp declaration element -->
<%!int i=0;%>
<%System.out.println("Scriptlet");%>
<%=new String("Expression")%>
</body>
</html>

Why its not working ?

View Replies View Related

IF Statement Never Gets Evaluated To True

Oct 27, 2014

Currently experiencing this issue where my IF statement never gets evaluated to 'true'.

public static void search(SalesEmployee[] employeeArray, int searchID)
{
for(int i = 0; i < employeeArray.length; i++) {
String e = ("" + employeeArray[i].getId());
if(e.equals(searchID)) {
System.out.println(employeeArray[i].toString());
}
}
}//end of search

View Replies View Related

Java Servlet :: IsTokenValid (request) Always Returns False

Jan 29, 2013

I am using saveToken(request) and isTokenValid(request) to stop duplicate request. But while checking isTokenValid(request), it always returns false.

View Replies View Related

Nested If Statement - Execute If True

Feb 16, 2015

I have a problem with an if statement I've done. I'm not sure how to fix my problem. I'll post the code of the if statement and the output.

if (box = true &&(shippingSwitch ==1))

if (ounces < .5)
{
additionalPrice = ((ounces % .5)/(0.0625))*1.25;
shippingPrice = 15.75 + additionalPrice;//((weight / 8)+ (weight % 8));

[Code] ....

Here's the output I get using println to test it.

Please enter 1 if your package is a letter and 2 if your package is a box
2
Please enter weight in pounds (Example: 1.2):
1.2
Please enter your shipping service option:
Press 1 for Next Day Priority:
Press 2 for Next Day Standard:
Press 3 for Two Day Shipping:
1
7.00

If I comment out the else statement on the last line of code I get the following output:

Please enter 1 if your package is a letter and 2 if your package is a box
2
Please enter weight in pounds (Example: 1.2):
1.2
Please enter your shipping service option:
Press 1 for Next Day Priority:
Press 2 for Next Day Standard:
Press 3 for Two Day Shipping:
1
13.75

What I want to happen is the code under the first comment to to execute if true, or go to the code under the next comments and execute if that statement is true and if that is not true I want the last block of code to execute underneath the last comments.

View Replies View Related

Does Either Of These Randomly Generate Both 0 And 1?

Nov 22, 2014

"which code is best for randomly generating integer 0 or 1". Haven't gotten my grade back yet but in reading these during the test I didn't think any of these would kick out both of those numbers, but there was no "none of the above" option on the test.This is exactly how it appeared on the test:

A) (int)Math.random() + 1
B) (int)(Math.random() + 0.2)
C) (int)Math.random()
D) (int)(Math.random() + 0.8)
E) (int)(Math.random() + 0.5)

I've tried all of them in the cs lab 100 times each and none of them generated both numbers. 'A' kicked out 1 every time. 'B,D and E' kicked out 0.2, 0.8 and 0.5 respectively each time, and 'C' kicked out 0. Did I just not run them enough times for the result to change or am I right in thinking there's a glitch on the test?

View Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved