// set up the generator
CMSSignedDataGenerator gen = new CMSSignedDataGenerator();
gen.addSigner(key, cert, CMSSignedDataGenerator.DIGEST_SHA224);
gen.addCertificatesAndCRLs(certsAndCRLs);
addsigner and addCertificatesAndCRLs are not found in netbeans.
Which version of Bouncy Castle and JDK version this supports?
This code doesn't recognise the package ( and therefore class ) timetest3, when I try to import it. The package I try to reference/call, follows, and works fine.
import javax.swing.JOptionPane;
import timetest3.TimeTest3;
public class timetest4 {
public static void main(String args[]) {
TimeTest3 time = new TimeTest3();
time.setTime(13,45,52);
[Code] ......
I am currently using notepad to create a Java program and using the command box to compile it and execute it and it has been working fine. I have the JDK version 7 so java.lang works which I know does not need to be imported. The Calendar method which should be recognized is not.
Here is the program. Cut this program and compile it in the command box. It will not recognize the Calendar method.
import java.util.*;
class Practice4_2
{
public static void main (String args[])
{
Calendar cal = Calender.getInstance();
Date.now = new Date();
[Code] ....
Here is my path if needed:
C:Program Files (x86)InteliCLS Client;
C:Program FilesInteliCLS Client;%SystemRoot%system32;
%SystemRoot%;%System Root%System32Wbem;%SYSTEMROOT%System32WindowsPowerShellv1.0;
[Code] ....
The compiler tells me that the variable after the while is not recognized.
What I especially don't understand is that the variable is defined and accepted in the character input and the swicth but later on is not recognized. I'm sure of this because I wrote the entire program, and then compiled it afterwards. I was therefore able to see the compiler advancing as the code was corrected
The error message is "cannot find symbol - variable choix"
do {
System.out.println ("1); Acheter Patons ");
System.out.println (" 2); Fabriquer baguettes ");
System.out.println (" 3); Vendre baguette ");
System.out.println (" q ou Q); Quitter ");
char choix = Clavier.lireChar();
switch (choix) {
[Code] ....
I wanted to create a simple window with the LWJGL and a key input request which closes the window.I also wanted to create the classes in seperated packages, so it's more organized.The window displays but if I press that certain key nothing happens.Here is the Main class:
package bb.main;
import bb.input.Input;
import bb.main.render.SimpleRenderer;
public class Main {
public static void main(String[] args){
SimpleRenderer createWindow = new SimpleRenderer();
Inputinput= new Input();
[code]....
Attempting to write a custom comparator for sorting songs, but I keep getting errors saying that the types cannot be resolved.
Java Code:
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import java.util.*;
public class SongCollection {
[Code] .....
I have a program in which I am prompting users for integer values to display in a JFrame. I call the method below to load an array with their input:
Java Code:
public String inputAssembly(){
if (!jtfInput.getText().matches("d")){
JOptionPane.showMessageDialog(null, "Input must be of integer value.");
} if (jrbFar.isSelected()){
return jtfInput.getText() + jrbFar.getText();
[Code] ....
Regardless of the input, both messages display (invalid input / got it). I've tried debugging so I know that the values are getting entered and read correct, at least to my knowledge. It is a very simple regular expression, only checking to be sure an integer was entered.
compiling javac is nt recognized as internal or external command
View Replies View RelatedI've installed the Java JDK onto my Windows 8 laptop and the first thing I need to do is run the compiler from the Command Prompt. The first prompt I enter is C:java -version. This worked fine, however when I try to enter the next prompt C:javac -version, I am getting the following screen and messages:
Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. All rights reserved.
C:UsersMary>java -version
java version "1.8.0_20"
Java(TM) SE Runtime Environment (build 1.8.0_20-b26)
Java HotSpot(TM) 64-Bit Server VM (build 25.20-b23, mixed mode)
C:UsersMary>javac -version
'javac' is not recognized as an internal or external command,
operable program or batch file.
I have entered the path into the environment variables area within my control panel. Not too sure why the first prompt works, but the second doesn't...
I did an implementation which is an extension of javafx.scene.control.ComboBox
Inside I imported the Class ComboBoxListViewSkin
import com.sun.javafx.scene.control.skin.ComboBoxListViewSkin;
I think this might be the reason as this comboBox is not recognized at the import to the scene builder library. I can show up the import dialog of custom controls, but my custom ComboBox is not showing up. All other implementations are there correctly as they are loaded from my customControl.jar file
I use the ComboBoxListViewSkin for the functionality to scroll to an item in the combo as a user types a letter on the keyboard.
I do this by:
/**
* This method scrolls the itemView of the items to the first item starting
* with the given char or string
*
* @param pressedKey
*/
public void scrollToChar(String pressedKey) {
String value = pressedKey.toUpperCase();
for (Object userEntry : getItems()) {
[Code] ....
I really need to show up my custom Combo in the scenebuilder, as otherwise the rest of my fxml is not editable in sceneBuilder 2.0 ....
I am writing a program in the GUI Builder and found that when I add code to print user input from text fields to a text file, the main method is no longer recognized. It throws all kinds of errors.
I have been able to get the code to work separately in a project file. Also, have been able to print to the console.
Write a function (or functions) that given a collection of files will produce a sum of integers from each line of each file. Each file can have any number of lines from 1 to N. Each line can contain only one integer and no other alphanumeric characters. All of the numbers from all of the files should be added to the final result. The result is just one number.
For either, what we are looking for is:
1. Clear separation of concerns
2. Well defined objects / interfaces
3. Application of good OO design principles to solve the problem
4. No code duplication
5. Test Driven Development
6. Well refactored code
7. Well tested code
This code is for a game I'm making. I'm new to using modulus, and I've been looking all over the place for a tutorial that I can understand. No luck. :
What I'm trying to do is get the console to print "enemy hits player" as soon as enemyAttacksPlayer() is called.
After one second, "player hits enemy" should be printed, so it alternates between these two lines every second.
The issue is when I call enemyAttacksPlayer(), it takes a few seconds to print any lines, and this delay is kinda annoying.
public int time = 0;
public void enemyAttacksPlayer() {
time++;
if (time % 120 == 60) {
System.out.println("enemy hits player");
} if (time % 120 == 0) {
System.out.println("player hits enemy");
}
}
I think I may be using % wrong.
I have an overloaded function 'f' as follows:
1. public void f(int i, long j){System.out.println("1");}
2. public void f(int...i){System.out.println("2");}
3. public void f(long l, long p){System.out.println("3");}
4. public void f(int j, int k){System.out.println("4");}
With the function call: f(1,2), the output is: 4.
My questions are the following:
a. Why is the compiler choosing #4 to execute and not the rest?
b. If I remove 4 and replace it with: 5. public void f(long j, int k){System.out.println("5");}, why does the compiler now give an error complaining of ambiguous function defintions when 'f' is called?
I have made a class here that has two methods. As you guys can notice, in my two methods that I made, I have listed some arguments in there with parameters. My question is that the variables im using in first method, can they be identical on my second method? Is this ok to do?
public class StudentScore {
private int math;
private int science;
private int calc;
private int history;
private int pe;
[Code] .....
my task is to add a few functions to an example calculator. I managed to add a divide button but I simply can't figure out how to add a working Pi and reciprocal function.
package newjavaproject;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class CalculateurNC extends Applet {
[code]....
I am writing a program for my Java class and I have every function of the program working aside from the modify and delete button. I'm not sure how to make them work. The course material doesn't cover these functions at all.
Here is what I have so far.. which is practically nothing. If I need to post any other code I will, I just don't want to post more than needed because going through unnecessary code can waste time.
public void actionPerformed(ActionEvent e)
{
inventoryTotalField.setText(String.valueOf(genre[ArrayIndex].getInventoryTotal()));
//add button functions
if (e.getActionCommand() == "First")//if first button is clicked
{
ArrayIndex = 0;//set array index to the first element in the array
setFieldValues(); // display dvd info on the form
[Code] .....
I've made a calculator that can add, subtract, multiply, and divide, but I still need a clear function and a square root one for it. I've tried going on the various calculator tutorials, but they don't work.
And here's my code:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Calculator extends JPanel implements ActionListener
{
private JTextField display = new JTextField("0");
private String button = "789/456*123-0.+=";
private double result = 0;
[Code] .....
Assignment 13 – Plot functions using abstract methods (Plot functions using abstract methods) Write an abstract class that draws the diagram for a function. The class is defined as follows:
Java Code:
public abstract class AbstractDrawFunction extends JPanel {
/** Polygon to hold the points */
private Polygon p = new Polygon();
protected AbstractDrawFunction() {
drawFunction();
[code].....
For each function, create a class that extends the AbstractDrawFunction class and implement the f method. Figure below displays the drawing for the first three functions.how to make the jframe to work so that I displays the panel
Java Code:
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.LayoutManager;
import java.awt.Polygon;
[code]....
Assignment 13 – Plot functions using abstract methods
Write an abstract class that draws the diagram for a function. The class is defined as follows:
public abstract class AbstractDrawFunction extends JPanel {
/** Polygon to hold the points */
private Polygon p = new Polygon();
protected AbstractDrawFunction() {
drawFunction();
[Code] ...
Test the class with the following functions:
a.f(x) = x2;
b.f(x) = sin(x);
c.f(x) = cos(x);
d.f(x) = tan(x);
e.f(x) = cos(x) + 5sin(x);
f.f(x) = 5cos(x) + sin(x);
g.f(x) = log(x) + x2;
For each function, create a class that extends the AbstractDrawFunction class and implement the f method. Figure below displays the drawing for the first three functions.
I am a 3rd year electrical engineer and I am working on a project on solar cell design in the developing world.For my project I am looking to create a very simple web page which can be used by people in the developing world to determine whether a photo voltaic system is suitable to their needs.
For this I want to have simple boxes where a user can input numbers and I used complex calculations to return values (a lot of trigonometric functions etc.), the values then should have the opportunity to be altered to the users digression. This will create a solar model.
For the load aspect of it I am looking to have drop down boxes for a number of components which the user can select and will have a numerical value in Watts which will sum to give total load on system. Ideally I would like to show this graphically in a pie chart showing how much energy each component is taking to give the option to remove.
I am also creating a statistical model which determines the likelihood of having no sunlight on a given day which looks at the solar output, battery capacity and load on the system and will return reliability of the system - this has not been completed but should be shortly.
Aim is to keep web page as simple as possible as unskilled computer users may want to use it.
I am working on a number of utility functions for square matrices and arrays, and I keep having trouble with segmentation faults.
arrayUtils~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
public class ArrayUtils {
//This function takes an array a, and returns the sum between indices
//i and j, where i is the lower index and j is the upper index. int size makes
//sure that the function doesn't go out of bounds.
public static int subSum(int[] a,int i, int j) {
int sum=0;
[Code] .....
I'm trying to make a code that will draw "roses" using polar functions. The code below is what I have, but when I run it nothing happens. What's missing?
package rose;
import edu.princeton.cs.StdDraw;
public class Rose {
public static void main(String [] args) {
int N = Integer.parseInt(args[0]);
StdDraw.setCanvasSize(512, 512);
[Code] .....
I am writing a java application that will function as a lottery game, using arrays it prompts the user to enter 5 digits and matches them against the random lottery numbers generated.
import java.util.Random;
import java.util.Scanner;
public class App {
public static void main(String[] args) {
int NUM_DIGITS = 5;
[Code] ....
What are they the rename To functions and lists the class file?
View Replies View RelatedI want to add admin-functions with a login at the main-window.I added first a Key Listener and later a Key Binding to replace the Key Listener.Both worked if i don't changed the background.Now the Key Binding is on a transparent JPanel in front of all other objects. "createback ground (boolean vorwrts)" removed the JLabel wich is the behind all objects and add a new JLabel at this position. Here is the "main code" for this Problem:
//[...]import
public class Surface{
int dx,dy;JFrame O,Ox;
protected JButton Bx;
String[] Names;
Image [] Images=null,QImages=null;
JLabel background=null;JPanel Top;
protected boolean view=true,play=false;
[code]....