Using RetainAll To Compare Contents Of Sets

Nov 16, 2014

I am trying to re factor the below code, so that the winning lotto numbers can be checked against more than one lotto line e.g. if the user decided to buy two lotto tickets.

public class Lottery {
public static final int NUMBERS = 6;
public static final int MAX_NUMBER = 40;

public static void main(String[] args) {
// get winning number and ticket sets
Set<Integer> winningNumbers = createWinningNumbers();
Set<Integer> ticket = getTicket();
System.out.println();

[code]....

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How To Compare Contents Of Text Field And DAT File

Sep 30, 2014

So basically I have this alpha.dat file which stores data submitted when I execute the alpha class and here I have a AWT textfield which reads a password from user. I have another class called beta and I have another AWT textfield in it which also reads the same password from user. How do I compare both passwords?(I know I need both classes to refer to alpha.dat but how do I compare both textfields in different classes)

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Displaying Sets Of Points

Jan 20, 2014

Here is my code

Java Code: //Points Display
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import java.awt.Graphics;
import java.awt.Color;
import java.awt.Dimension;
import java.util.Random;

[code]...

1. Why, when I press "New" rapidly, will it skip painting shapes sometimes/adding to totcount.

2. How can I make it so that The box in the background(which is currently connected in the wrong way as I was getting an error when I connected it correctly) can be modifiably large. AKA, I want to draw a grid in the background that can be different sizes, depending on the values of a variable xsize and ysize.

3. What can I do to clean this up? All I want it to do is display the convex hull of the four points given in the int[][] displaypoints.

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Intersection And Union Of Two Sets

Apr 6, 2014

class ArrayDemo3
{
static void union(int x[], int y[])
{
System.out.println("Union Elements:");
for(int i=0; i<x.length; i++)

[Code] ....

This is what i have tried. I do not want to use collections.

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Given Array A With Elements 0 To N-1 - Create N Sets

Jan 27, 2014

You are given an array A with elements 0 to n-1, numbers can be repeated in the array. Create n sets where

S[i]={a[i],a[a[i]],a[a[a[i]]]...}.

Set has all elements unique. Find the size of the largest set.

Input:

First line contains n, size of the array. n<1000

Next lines contains n numbers, each element of the array

Output :

Prints one number: Size of the largest set.

Sample Test Case:

Input: {3,1,2,0}

Output: 2

Explanation:

Four possible sets are

{3,0},{1},{2}{0,3}

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Converting Range Statements To Sets In Java

Mar 20, 2014

I am trying to Extract the ranges of Variables from a Text File. I extracted lines of the forms X in 1..10 Y in 12..50 Z in 0..19 / 66/ 95..100 Where X in 1 ..10 states that X takes values from set 1 to 10 Similarly for Y and for Z its a Union of different ranges of the values (0 to 19, union 66,union 95 to 100)

I want to Map these Variables to their respective sets using Hashmap where Key is Variable name and value will be a Set. My Hashmap Signature is HashMap> hm=new HashMap>();

Java Code:

while((line=br.readLine())!=null) {
Matt=Patt.matcher(line);
if(Matt.find()) {
//System.out.println(line);
String []s=line.split(" ");

[Code] .....

I am stuck at extracting the variables ranges from these plain strings.

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File Input - Multiple Sets Of Data

May 5, 2014

I am trying to create a Community Theater program that has Actors, Directors, Investors, Staff etc. I should eventually be able to input the information for the people from both a file and the keyboard. I'm working on trying to take in multiple Actors from one file and adding them to an ArrayList of Actors. My code takes in only one actor right now.

I am trying to take in multiple sets of data for the same type of class but creating new instances after each set of data (16 lines). Each actor has 16 lines of data (text file included), so I was thinking that I would need perhaps a for loop but I am unsure of how and where to implement it. I am also unsure about adding these new actors to the Actor ArrayList. I'm a little shaky on the idea of creating multiple objects when it is unknown how many you need to create. Right now, I know how many Actors I need to add but it would be nice if I could learn how to expand that based on the user's needs.

My Questions:
How can I write my program to know when it is done reading 16 lines and then initialize a new Actor (will expand to other people)?(expanded below)Eventually, I plan on using my theaterObj (an instance of CommunityTheater class), what if I wanted to move the readActorFile method to that class? Would that change the way I implement anything majorly? Would it still be a static method? I ask this because I want the Actors array to be a variable in the CommunityTheater class. I would extend this to adding actors to an ArrayList in a Play class which would be in CommunityTheater as well. So, essentially a CommunityTheater has different Play(s), and each Play contains a list of Actors.

I don't exactly know where I should put a loop (should I use a loop?) to read through each line, in readActorFile or in readInFile? How should I write this loop, as in, how do tell my program what line it's reading?

for(countLine=0; countLine < 17; countLine++) or while(countLine<17)
read all the info
and then an if(?)-

if(file has a next line)-I don't really know how to code this-start over with loop of reading information?I don't know about the for loop, as I'm not sure how to "count" lines in a text file.OR I've been thinking that readInFile in the Actor class could return something(true/false?) to let the method readInActor know that it's done reading, then readInActor can check to see if there's anything else in the file, if there is- it would call the readInFile in Actor class again to read in information... and so on. But again I am unsure of how to code this.

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Nodes Contain Array Data Sets In A Linked List?

Mar 9, 2014

TL,DR: observe the nodes just below, that is the data each node in the link list contains. How do I iterate through the entire list to reach the last element (H), so I can add an element right after it?

So I have 4 nodes doubly linked with two dummy nodes for head and tail:

head
node1 = {A}
node2 = {null, B}
node3 = {C, null, D, E}
node4 = {null, F, null, G, null, null, H, null}
tail

Ok, so since the list only contains 8 elements that are not null, its size is actually 8 correct? So now lets say I have an add method that has

add(E item) and inserts the item at the end of the list. So I can get to the last node with tail.previous(), but then how do I iterate to the end so I can add the item after the last item in the list (H). I guess I don't know how you only access one nodes data when that data is an array with empty spaces.

Here is the entire Node code:

Also, I can't just iterate through the whole thing because I am not supposed to. I am supposed to just find the right node and iterate through that only.how to maneuver around a linked list containing nodes where each node contains an array.

/**
* Node class that makes up a DoublingList. Feel free to add methods /
* constructors / variables you might find useful in here.
*/
public class Node<E> {
 
/**
* The node that comes after this one in the list

[code]....

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Code Will Not Calculate Or Print Intersection And Difference Of Two Sets Using Arrays

Nov 19, 2014

As part of the instructions we are required to use loops and methods to solve to program this code. We are not allowed to use any set functions that are already built in java.The methods for intersection and difference MUST return int value.

import java.util.Scanner;
public class setPractice {
public static Scanner kbd;
public static final int MAXSIZE = 20;
public static void main(String[] args) {
kbd = new Scanner(System.in);

[code]...

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Viewing Jar File Contents?

Jan 17, 2014

I have a jar file. I need to open and see the source code in the jar file to override some of the style related code like primefaces-3.4 related

org.primefaces.component.behavior.printer.PrinterBehavior.getScript()

How do I see jar content.

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Validating The Contents Of A File?

Oct 21, 2014

I have the assignment of making an application that reads a file and then validates the contents to create a statistical report.

I have managed to have the application read the contents but im completely puzzled on how the validating works.

Is there coding in the file that put the numbers and words into the correct data types or is that also done in the application?

The application is to read the file of rugby scores and the produce the report with the amount of goals scored.

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Servlets :: How To Obtain Contents Of Td

Mar 19, 2014

i have created a table in jsp, i want to obtain the contents of a td at the servlet.For example, here's one td of table:

<td align="center" title="tdun" id="cat"> <%= categoryname %> </td>

I want to get this value in my servlet .

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JTable Height Should Fit To The Contents

Jul 24, 2014

I have a jTable with one or 40 rows in it.

The problem is, also when I have only one row in my jTable, the size of the jTable is a little more bigger than 40 rows.

How can I say the jTable, that she should scale to the size of the content?

I don`t want that the jTable is bigger than the content. For example the picture below:

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Print Contents Of Arraylist In Object

Nov 7, 2014

i have a class that creates an object made of 2 strings and an arraylist

class Users{
private String ip;
private String userName;
private ArrayList <String>cons=new ArrayList();
Users(String i_p,String un,ArrayList con){//construc

[Code] .....

This object then gets returned to an arraylist of these objects

static ArrayList<Users>users=new ArrayList();

My question is how can i then get the arraylist from this object to print its contents?

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JSP :: Displaying Hindi Contents In Servlet?

Jul 9, 2014

I want to display hindi contents in servlet but it is displaying in following format-

निवासी. मैं ऊपर नाम साक्षी, सत्यनिष् ा वाणी है और नीचे के रूप में घोषित:

I have tried to change pageEncoding, characterEncoding and contentType in both jsp and servlet but i haven't got success.

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Printing Contents Of Linked List

Feb 17, 2015

I'm trying to print the contents of my linked list. I'm using nodes and within those nodes it hold String data. So i want to print out the data within the nodes. Whenever i do

System.out.println(node1.data),

it prints perfectly. But i'm trying to use a method where it would loop through the list and print out the data for every node in it. when i run my print method i get results such as

Node@15db9742
Node@6d06d69c
Node@7852e922.

Here is my print method i created

Java Code:

public void print(){
Node<E> current = head;
while (current.next != null){
System.out.println(current.data);
current = current.next;
}
} mh_sh_highlight_all('java');

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How To Print Contents Of Java Bean

Mar 24, 2015

I'm trying to debug a program and I need to see the values in a Bean. I tried

" system.out.println("OrderManager.java: packagePricing, packBean= "+packBean);"

but that just gives me

"OrderManager.java: packagePricing, packBean=com.voxportal.web.device.PackageBean@73dde7ae"

which I think is a reference to the bean but not the actual contents of the Bean.

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Function That Will Add Contents Of String Array

Sep 18, 2014

Write a function that will add the contents of a String array.

1. This time the input array to your function will be an array of Strings.

2. Your function body will be similar except you'll have to convert each String to a double number.

public class SumVals2 {
String aryVals[];
double result;

[Code]....

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How To View Contents Of ISO File In Java

Jul 15, 2014

Any method of viewing the contents of an .ISO in java. my searches so far have said to use the java api loopy but I cant find hardly any information on it and i have been unable to use it correctly so far. If there is no way to just view the .ISO file contents then extracting its contents and then viewing them would also be fine how to do that.

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Showing Contents Of File In Texteditor

Jul 16, 2014

I have query regarding showing contents of file in texteditor.

I am working on web app where user can open a fille from drop down list of files .

when user will select a particular file and open it , then file should be open in editor to modify its contents in web app.

can u tell me how can i do this, without applets.

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How To View Contents Of ISO File In Java

Jul 15, 2014

Any method of viewing the contents of an .ISO in java. my searches so far have said to use the java api loopy but I cant find hardly any information on it and i have been unable to use it correctly so far. If there is no way to just view the .ISO file contents then extracting its contents and then viewing them would also be fine ....

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Apr 10, 2014

I want to view contents of ByteCode. I used Notepadd++ to view it but it displays as nonsense. Is it possible to view .class content?

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How To Compare Strings

Mar 13, 2014

Its supposed to notify the user if they have a palindrome, but keeps returning true even when I type, "hello".

import java.util.Scanner;
public class PalinDrome {
public static void main(String[] args) {
String line;
Scanner input = new Scanner(System.in);
System.out.print("Please enter a word ");

[code]....

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JSF :: How To Compare Two Variables

Feb 25, 2014

Having two values

<c:set var="var1" scope="view" value="#{ID1}"/>
<c:set var="var2" scope="view" value="${ID2}" />

I tried in <c:if test=${var1 == var2}>

and eq also

above condition is not working. Both are same object. How to check?

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Trying To Compare Two JComboBox

Jul 23, 2014

I'm trying to get the input of two jcomboBoxes for example if jcombobox 1 option 1 and jcombox box 2 option 1 is selected result = x

Here is my code:

comboDest1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
//
// Get the source of the component, which is our combo box.
//
JComboBox comboDest1 = (JComboBox) event.getSource();

[Code] ....

How would i achieve this?

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How To Compare Date

Jun 17, 2014

how can i compare date with following request the value date transction must be within the Active date(>= greater than or equal) and inactive date(<= less than) date range

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