My code is like follows. I want add the lines of data from text file to arraylist.After add the lines to array list,i want to get the interesection between the lines of data. But I could not get the intersection and it returns empty. My sample data from specific line in text file as follows,
We had to use these methods with the given parameters and code them correctly. We cannot use any built in java methods for sets.
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); int[] setA = new int[MAXSIZE]; int[] setB = new int[MAXSIZE]; int[] intersect = new int[MAXSIZE];
[Code] ....
This is the input given to the program:
How many numbers will be in the 1st set: 3 Enter list of integers for 1st set: 12 3 2
The ascending order for 1st is: 2 3 12
How many numbers will be in the 2nd set: 4
Enter list of integers for 2nd set: 2 3 6 1
The ascending order for the 2nd set is: 1 2 3 6
The intersection of the two sets is: 0 0 0 //Program not correctly print intersection of two sets
The difference of A-B is: //Program is not printing the difference either...
I have created this project and want to be able to add new members to my members arraylist, store the input in a .txt file and load the new members after closing and opening the program.
I have declared an array list that will store data type of 1 Character and 2 integer. The data that will be store in this list is
1. A = {0 3} 2. B = {0 5} 3. C = {0 3} 4. D = {0 3} 5. E = {0 5} 6. F = {0 6}
Now here the alphabets are routers and integers are there con1 and con2 respectively. I have a set of router={ A,B,C,D,E,F}.
Step 1:I have to subtract con1 from con2 i.e. (3-0) of all the routers and Step 2: then put the router having largest value in new set 1 and Step 3: then this router will be subtract from the router set. Step 4:then again I have to repeat the step 1 until the value of routers become <= 1.
Now what I did is I defined 3 arrays first is String array that stores names of routers, 2nd array that stores the first value and 3rd array that stores the second value. I can find the largest value but how to store the name of router against the largest value in the set.
If I lets say have an interface Animal, and I create a lot of classes with a different animal name that implement the interface Animal. Then I create an ArrayList of Animal. Then I would put in lets say Dog class into the ArrayList, which has custom methods and data that the Animal Interface doesn't have, is this data ripped away except for the methods that are put in the Animal interface? So if I would cast the Animal back to Dog, would it retain all the data that existed before it was placed in the ArrayList?
public void draw(ArrayList<int[]> good,ArrayList<int[]> bad){ drawing = true; goodToDraw=good; badToDraw=bad; System.out.println("Canvase/draw: Calling paint with a size of "+goodToDraw.size()); middleMan();
[code]....
What this does is two ArrayList are sent to the draw function.one called good and the other bad. Right now I am only working on good. What is suppose to happen is paint takes all the good coordinates and paints them but I seem to loose the arrayList size when repaint is called. You can see in the picture below of my console that it starts of with 20. Then because I was wondering if the scope was to short i called middleman to make sure that it held its size outside of the first function. Then finally it calls paint and tells me the array is empty. To simplefy..Why does my arraylist size go to zero when I call repaint?
I have to use methods and loops to code this program. Cannot use any java set or any built in java shortcuts!
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] .....
This is the input I put in my code and this is the output:
How many numbers will be in the 1st set: 3
Enter list of integers for 1st set: 34 2 56
The ascending order for 1st is: 2 34 56
How many numbers will be in the 2nd set: 4
Enter list of integers for 2nd set: 56 2 33 6
The ascending order for the 2nd set is: 2 6 33 56
The intersection of the two sets is: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
I have created this project and want to be able to add new members to my members arraylist, store the input in a .txt file and load the new members after closing and opening the program.
I am trying to write a program that will take any comma separated data set and return the values in an arraylist without any commas. Like if I input "hello, world, program, java" it would output an arraylist [hello,world,program,java].
public void run(){ String line = readLine("Enter a CSV-formatted line of data: "); int lowerBound = 0; String entry = new String(""); ArrayList<String> string = new ArrayList<String>();
I am trying to remove the duplicate elements from ArrayList using .contains() if elements are primitive datatype it works but user-defined datatype does not work.
public class UserBean { String name; String address; public String getName() { return name;
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 managed to retrieve data, and set data in my own ways in which I like. But my problem is, if the file does not contain anything (fully empty), when I try to use my
If you were given a problem to search for an error in a section of code but it is incredibly long, what are some ways you can go through the lines of code quickly?
I'm working or better say.. I'm trying to work :) with Maven projects (m2eclipse plug-in) and Eclipse IDE. The problem I have is that sometimes the debugger seems to skip some lines of the code without a reason.
Is there an issue of synchronisation with my .class files?
class CreateFile implements ActionListener{ // MailOrderCreateFile.java @Override public void actionPerformed(ActionEvent ae){ String getDestination = txtDestination.getText(); file = new File(getDestination); // needed for Creating and Displaying the file currentTime = txtCurrentTime.getText(); try { FileWriter fw = new FileWriter(file);
[Code]...
What I wanted to do is that every time I press the button that will activate this part of the code, it will write to a .txt file defined in my txtDestination var (a JTextField). After the first time the file was created, it must append a new line every succeeding presses. However, everytime I do this, it just simply overwrites the contents of the .txt file. The example output would have been like this:
First time.
O R D E R D E T A I L S: Time ordered: 01/21/2015 Wed 10:21:54 PM Item number: 10 Item price: $4.59 Quantity ordered: 12,321 Total: $56,553.39
A friend and I are working on a project in which we must test "super anagrams" (anagrams in which all characters in the first string are found in the second). We have a driver and definitions class pasted below:
Definition class SuperAnagram{ String left = new String(""); String right = new String("");
[code]....
In the driver class, we get "cannot find symbol" errors at the beginning of cleanStrings and isSuper, both inside and outside of the if statement.
I'm using the Spring Layout Manager to put a form in a JPanel and I'm trying to center the lines horizontally so they will stay centered when the window is resized. Nothing I've tried has worked, I can't find anything on the web, and even my fallback of seeing how Netbeans does it fails as Netbeans doesn't seem to support the Spring Layout.
I have a text file with the below details and we get the input as name CONNECTION_PORT and we need to delete the matching global variable which as CONNECTION_PORT and keep the remaining global variable in file without using any temp files.
What would i have to do to insert a a piece of text in between hello and bye? I would like for the it to search for "hello", then add a line after it so it would look like :
------- hello newtext bye -------
I have these 2 methods that work as intended, but i just cannot seem to do what i've stated above.
Java Code: /** * @param location * Location of the .txt file. * @param text * The String to search for in the .txt file.
I've to read in an array of 1000 random numbers, and then my program sorts them depending on whether the user chooses bubblesort, selectionsort, etc...My code all works fine, my problem is with the actually output display. I have method that displays the content of the array that I call for the unsorted array, and for the sorted array. So at the moment the output to the user looks like:This program sorts an array of numbers by your choosing.
Array before sorting: 148 626 817 4 312 652 643 134 etc... for 1000 numbers
