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>();
From this, I need to extract the statements of variables that do not start with _G . I mean, I need to extract, Y in 1..15 , __X in 1..15 /17/20 but not _G7145 in 10..15 / 16.
I am using regular Expression for this as [^_G]^[A-Za-z0-9_]+ in|ins [-9 -9]..[-9-9] [/[-9-9]..[-9-9]]+
Now I want to convert this Set into a Range Statement which is of Form as follows...
Desired Range Statement Form is = 1..5/10/12.
Since 1 to 5 are contigious in my Set, they are represented as 1..5 and 10 and 12 are single non contigious elements they are given a single element with a union (/) Symbol.
Similarly, I want to convert the RangeStatement 1..5/10/12 to Set S=[1,2,3,4,5,10,12].
DO we have any efficient method to o this in Java? if I need to write my own method or is there any inbuilt method to do this.
I am trying to code a program that orders 5 random numbers from high to low with the basic coding i know (im starting to learn theory of methods... so you can imagine) When i run the code i cant get all 5 numbers ordered but my logic says the code is right although it's pretty confusing.
I know you could code in a simpler way but first i wanna get it as it is right now. When i debug (on my own way cause i dont know how to actually use it) shows line 72 with yellow color.
public class NuevaCalculadora { import java.util.Scanner; public static void main(String[] args) {
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.
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();
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.
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:
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
I'm converting from ASP to Java for a legacy site. I believe the first part of the if statement is right but I'm having an issue within the else staetment. I'm getting date is undefined, I've tried using getYear and getDate but have not been successful.
ASP:
If Request("action") = "results" Then aMonth = Request("selMonth") aDate = cint(Request("selDate")) aYear = cint(Request("selYear")) Else aMonth = UCase(MonthName(Month(Date()),true)) aDate = Day(DateAdd("d",-1,date())) aYear = Year(Date()) End If
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);
I compiled a java program and converted it to an exe file and it works fine on the computer I created the java file in but when i try it on another computer it gives me a "Java Virtual Machine Launcher - A Java Exception has occured" error message.
I am trying to use a for loop for getting hours for an employee for five days. how to convert my pesodocode into java language so that it will compile. This is what my pesodocode looks like:
begin getHours() for(index=0; index <5; index++) get hours **System.out.println() **inputString = input.readLine() **plumbersHours[index] = plumbersHours [index] = integer.parseint(inputString) endfor index = 0 while (index < 5) totalHours + = plumbersHours[index] index++ end while return
how to use Java and for my coursework I have been asked to construct an application that will read in the exam mark and coursework mark and then print out to 1 decimal place the average of the coursework and exam mark. When I submit it to the coursework submission system it says it's incorrect.
The answer that it's asking for is the answer that my code produces (ex = 71 cw = 40 mark = 55.5) But for some reason it says this when I submit it:
-#### << Differences between expected (<) your answer (>) >> ------------ 1c1 < ex= 91 cw = 80 mark = 85.5 --- > ex = 71 cw = 40 mark = 55.5 -------------------------------------------------------------------------
Check the above output for why this attempt failed And when I change the ex to 91 and cw to 80 it asks for > ex = 71 cw = 40 mark = 55.5 again.
class Main { public static void main( String args[] ) { int ExamMark=71; int CourseworkMark=40; double cost = (double)(ExamMark + CourseworkMark) / 2; System.out.printf("ex = " + ExamMark + " cw = " + CourseworkMark + " mark = " + cost); System.out.println(); } }
I am trying to create a program that allows me to enter 5 students numeric grade (0-100) to a letter grade (A, B, C, D, F) and I CANNOT use an array. When I try to run my program it says main class not found, and when I change the it from a string to a void in the main method it does not work.
Java Code:
import java.util.Scanner; public class Week3ControlStatements2 { public static String main(String[] args){ int numberGrade = 0; int quotient = numberGrade / 10; int remainder = numberGrade % 10;
I am trying to write a program for converting positive binary inputs into hex. in the hex output the point (".")is missing.
Suppose my expected output is e7.6 , but i am getting e76
only the "." is missing.
here is my BinToHex class..
import java.io.*; public class BinToHex { double tempDec,fractionpart; long longofintpart,templongDec; String input ="11100111.011"; String hexOutput=null,tempDecString,hex = null; static int i = 1;
I am in the process of creating a calculator GUI that calculates different answers based on inputs two main comboboxes and numbers in the appropriate textfields. The first one allows the user to choose from 18 different materials, while the second has the user choose between two different shapes. In a brief word explanation, here's how it's set up:
User chooses material. User chooses shape. User types in appropriate values. 'Calculate' button clicked. If shape = rectangle, execute rectangle calculation. Else if shape = cylinder, execute cylinder calculation.
Everything works just fine with zero errors on all 18 materials and all kinds of decimal numbers when the second shape is selected. So the math and layout is solid. However, when the first shape is selected, it returns a $0.00 answer regardless of the input values (still no red-line errors). In efforts to troubleshoot, when I have /* Cylinder section */, the rectangle section works to a 'T'. This, I believe is caused by poor formatting in the syntax of the 'if' 'else if' in regards to the shape combobox.
//If 'Rectangle' is selected: if(shapeDropDown.getSelectedIndex()==1) { //6061 if(materialDropDown.getSelectedIndex()==0) { String msg0 = "The price is: $" + currencyFormat.format((0.098*(number2*number3*number4)*3.06)); totalPrice.setText(msg0);
What I'm trying to do below is to say if (adultTickets > 0) I want to bypass the studentOAP tickets question and go straight to the question about dinner. But if (adultTickets ==0) I want to go to the studentOAP question and then if the (studentOAPTickets >0) to go to the question about dinner. But if the (studentOAPTickets ==0) I want to go straight to the question about the contact number.
System.out.print("How many adult tickets do you require? "); int adultTickets = 0; boolean validAdultValue = false; while (validAdultValue == false) { if(aScanner.hasNextInt())
My initial question had to do with looping but now I'm having trouble adding certain variables.
The original thread is here: [URL] ....
If you look at the end of the code it won't recognize the "overtime" and "hourDiff". I have to use it for each level the user chooses and am not sure how to do so. Even if I put it under the if{ statement it won't calculate. I assume it's due to it being cut off from other blocks but I'm not sure how to combine them.
My code is:
import javax.swing.JOptionPane; public class Pay { public static void main(String[] args) { double salary2 = 20.00; double salary3 = 22.00;
