I am working on this program to approximate the integral of the function sin(x)/x using Riemann sums (left hand). It is close, but whenever I try to check it in the web grader some of my results are way off. Here is my code.
public class Integrate {
public static void main(String[] args) {
if (args.length != 3) {
System.out.println("Error: must enter a, b, n");
System.exit(1);
[Code] .....
What is the simplest way to sum a huge number of double precision numbers so the sum has higher precision than double?
View Replies View RelatedI just wanted to ask that when we invoke a function by passing certain arguments in it ,so for instance I have certain variables like a,b and c with some values assigned to them,so when I invoke a function like func(a*b , 8, c+a) where the function func accepts parameters like func(int x,int y,int z) ,so is there any order of evaluation of expressions defined like the value of c+d would be evaluated first and then assigned to variable z ,because in C we have sequence points and since comma when acting like a separator is not a sequence point so any of the expression can be executed first ,so basically is there any sequence in which the function arguments are assigned to the parameters of the function or any relation with the stack implementation.
Even in C ,the printf starts executing its expressions from right to left so basically in why does it happen there when comma is a separator in a function argument.
This is a simple recursion program I had to write. I just cant seem to display my sum function to the user
import java.util.*;
import java.io.*;
public class Recursion {
public static void main(String[] args) {
int number = 0;
[Code] .....
I am making a pizza program and most of the program works. I have made an order button that will output the total price of the order. The reset button that I made makes the JTextArea output $0.00, but if I press the order button to make another order, the program does not add the new amount to zero. For example, if I make an order that totals $5.00, but I want to make another order after resetting, the price for the new order will be added on to the previous order's price.
Here is the code. This is a JApplet program. Why the price will not reset? This code was made in BlueJ.
//Author:Kishan Patel
// Sources will be cited soon.
//This is Lab 7, the pizza parlour program.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
[code]....
Am i doing this right?
public class TwoStrings
{
public static String duplicate (String s) {
String t = s + s;
return t;
[Code] ....
I have understood my programming class up to this point and now I have been given a lab that I can't figure out for the life of me. Here what I have to do: Write a program that will call a method (called f) to calculate the following function" f(x)=(x^2)-16...this is what the output should be:
x f(x)
1 -15
2 -12
3 -7
4 0
5 9
6 20
7 33
8 48
9 65
10 84
I guess it also has to print this output in a table even though my professor never mentioned it. Usually
public class Lab12 {
public static int f(int x)
{
return x*x-16;
[code]....
I need to write a simple program that reads an amount of minutes and displays the approximate number of years and days for the minutes. For simplicity, assume a year has 365 days and the resulting amount of days is a whole number.
View Replies View RelatedI would use the return value of a function how parameter of other function..In java is:
// the call produce "YES"
SecondClassController.funcSecondClass(FirstClassController.funcFirstClass());
In my web page I need to do something like this:
[...]
<h:outputText value="#{secondClassController.funcSecondClass(#{firstClassController.funcFirstClass()})}" />
[...]
obtain:
javax.servlet.ServletException JBWEB006007: Failed to parse the expression
@Named
@SessionScoped
public class FirstClassController implements Serializable{
[...]
[code]....
my first assignment is to convert a md5 string to password of the user, the MD5 function is available, i just need to call it and print the result. Here is my code. I can't call the md5 because of the String[] and String is different in main and md5 function,modify the code so it can run properly, also the input has to be entered from command line.
import java.security.*;
public class PasswordCracker {
public static void main (String[] args){
String password;
md5(args)
System.out.printf(""+password+"");
[code]....
I'm trying to create a booklist in java using swings but I'm facing a problem. I don't know how to add a search function to my list. I need a search box with the book names.
View Replies View Relatedwhere I have to write a Java program that asks for user input regarding a book and provides information based on that input like the number of pages required, number of words on the final page and if the final page is more than half full, etc. We are told that each page should have 250 words maximum to use for our calculations. The problem I am having here is that when the total number of words is a multiple of 250 the output tells me that there are 0 words on the last page when in fact there are 250. I've tried messing around with mod functions in this format ((x+a)%250)+y which is what the professor told us to use instead of creating an if-statement for this case but I haven't been able to crack it. I don't think I fully understand how the mod function cycle could work for this case.
import javax.swing.JOptionPane;
public class CorreiaFranciscaA1Q1 {
public static void main(String[] args) {
String ManuscriptTitle =
JOptionPane.showInputDialog ("Please enter a book title.");
String AuthorName =
JOptionPane.showInputDialog ("Please enter the author name.");
String TotalWords =
JOptionPane.showInputDialog ("Please enter the number of words.");
[code]....
Above if totalWords is a multiple of 250 like 17500 then wordsFinalPage will give us 0 and I need it to give 250. How can I do that without using an if statement but instead using a mod function?
Using JPA 2.1, I have been trying without luck to call a function that returns a REF CURSOR containing RECORD TYPES. Is there a way of doing this?
One Example of trying:
Query query = em.createNativeQuery("select my_package.my_function from dual");
Object a = query.getSingleResult();
I have also tried to use the StoredProcedureQuery though this does not look like it can return the functions value.
Produced
org.springframework.orm.jpa.JpaSystemException: No Dialect mapping for JDBC type: -10;
nested exception is org.hibernate.MappingException: No Dialect mapping for JDBC type: -10
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:244)
[Code] ....
E.g:
onblurr="check(this, '<%=company.getId()%>' );return false;"
doing this, function check(field, inputVal) {
alert("companyId:" + inputVal);
}
Gave me the alerted value as :
companyId:<%=company.getId()%>
instead, if the company.getId() --> 30
When I do like this, how to get the value 30 inside the function? i want companyId:30
I want to test that a function has no any exceptions.In C++ and Google Test Framework (GTest) it will look like this:
ASSERT_NO_THROW({
actual = divide(a, b);
});
How will it look in Java?
In JSP page: firstly set the setter of a entity in bean and then set it in session,request etc. and gvet values using foreach loop as follow :
<jsp:useBean id="st" class="beans.student">
<jsp:setProperty name="st" property="roll_no"/>
</jsp:useBean>
<%
[Code]....
Here start is the variable whose value will vary after every time i visit this function.So how would i be able to use above query.
P.S. i was using scriplet before and i was able to deal these issues with scriplet easily.
So I have this
function checkvalue (val) {
if(val==='replaced')
document.getElementById('check1h').style.display='block';
else if (val==='checked')
document.getElementById('check1h').style.display='none';
else
document.getElementById('check1h').style.display='none';
}
Which works fine... But if I try and add another document under the if VAL === replaced then nothing works and neither of the boxes appear.
function checkvalue (val) {
if(val==='replaced')
document.getElementById('check1h').style.display='block';
document.getElementById('check1n').style.display='block';
else if (val==='checked')
document.getElementById('check1h').style.display='none';
else
document.getElementById('check1h').style.display='none';
}
Is this not possible?
Also, Both of my input type are set up like this...
<input type='text' style='display:none' name='check1n' id='check1n' placeholder='Name of Part' />
<br>
<input type='text' style='display:none' name ='check1h' id='check1h' placeholder='Part Number' />
I am new to java. I have written a function in C#,how can i convert it into Java.
public AsymmetricKey readKey(String filename)
{
StreamReader reader = new StreamReader(filename);
String modulus64 = reader.readLine();
String exponent64 = reader.readLine();
byte[] modulusBytes = base64Decode(modulus64);
byte[] exponentBytes = base64Decode(exponent64);
BigInteger modulus = new BigInteger(modulusBytes);
BigInteger exponent = new BigInteger(exponentBytes);
AsymmetricKey key = new AsymmetricKey(modulus, exponent);
[code]....
In my given below code..in Action listener #Report function does not calling.
Java Code:
import java.awt.Color;
import java.awt.Container;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
[Code] ....
import java.awt.*;
import java.awt.event.*;
import javax.swing.ImageIcon.*;
import java.awt.Font.*;
import javax.swing.*; //import java swing to use the Jframe etc
public class MathQuiz extends JFrame implements ActionListener
[Code] .....
I have 2 JButtons on my JFrame and i would like to add a function to it when i click on them.
I would like the JButton calculator allow me to open another JFrame if thats possible and i would like the JButton Exit allow me to exit the current Frame.
I am trying to make a function to tell me how to know if a byte is powered on or not but it must be through a mask depending on the position you send.
bool estaEncendido(char byte,int pos)
{
// byte = byte<<(7-pos) ;
//byte = byte>>(pos+1);
int mask=1;
int result =1;
for(pos=0; pos<8; pos++, mask <<=1)
[Code] ....
In the main should have been as well
System.out.print(estaEncendido(5/*000000101*/,2/*00000100*/));
/*00000101 */
/*00000100 &*/
/*00000100*/This ignition
I have the following code:
<% String callImp = null;
callImp = request.getParameter("callImp");
System.out.println("Call Importer: " + callImp)
if (callImp == null){
System.out.println("Aici null");
%>
and i have an [url] ....
Why is getParameter always returning null?
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class vowels{
public static void main(String arg [])
{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.print("Enter a String : ");
[Code] .....
Is it possible to create a JInternalFrame class with additional public functions that can be called from the desktop? Here is some snippets of the code. This is the Internal Frame with the public functions added after the constructor.
public class Search_Ifr extends javax.swing.JInternalFrame {
/**
* Creates new form Search_Ifr
*/
public Search_Ifr() {
initComponents();
[code].....
The line " ifrSearch.setTabPaneIndex("tabCust");" is throwing a compile error that the method is not found.
I am using AXIS2 tomcat6 and jre1.6.0_07 and I created java project using net beans. but when I execute java2wsdl I am getting the following. Can you solve my problem? Also I would like to know what is the function of java2wsdl and its parameters?T
C:axis2-1.4-binaxis2-1.4in>%AXIS2_HOME%injava2wsdl -cp . -cn samples.quickstart.service.pojo.StockQuoteService -of StockQuoteService.wsdlUsing AXIS2_HOME: c:axis2-1.4-binaxis2-1.4Using JAVA_HOME: C:Program FilesJavajre1.6.0_07An error occured while generating codejava.lang.ClassNotFoundException: samples.quickstart.service.pojo.StockQuoteService C:axis2-1.4-binaxis2-1.4in>
String pool puzzles me again. I think a==b and a==c are both true...
public class StringPoolTest {
public static void main(String[] args) {
String a = "abc";
String b = f() + "c";
String c = g();
[Code] .....