1. arrays... forums.oracle.comhi everyone, getting a bit confused with my array. It is set to a maximum size of 80 but not all is used.i am currently checking every other digit in the array to see if it is more than a number and if it is, it needs to be inserted in to that position. the remaining numbers numbers in the array ... |
Thanks for all your help, i have got the booleanis full method working fine now i am just haveing problems adding a new element to the array i know how to do it but my coding skills are not that good. i want to use boolean is full on the add (person p) method first then use a loop to check ... |
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it should show error because we are allocating memory to both the arrays and writing i = j , that means changing the memory reference . In C & C++ , it shows error , why not showing error in Java. Compile this Code:-----> public class example { int i[] = {0}; public static void main(String args[]) { int i[] = ... |
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I have finished my program and now i have given the program a bigger list of records in the thousands. After running it the program stops always at the same number being 269794. Can someone give me some information on this? I am using a simple read file method as shown below that just saves every line in a file to ... |
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Ok, let me explain the problem a little bit better, I have to do a lottery ticket or something like that, so in one part of the program I need to create a method that does a QuickPick witht he Random generator, the problem is that I need to check that those random numbers do not repeat, so that's why I ... |
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13. Array help forums.oracle.com |
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Yes! You can do that. Check out the java.lang.reflect.Array class. It has a newInstance method that takes a class and a length as arguments. I would guess that using this method is slower than normal array instantiation, but if your app is not too performance-intensive it shouldn't matter. If you want some examples on how to use this method, check out ... |
16. array's forums.oracle.comLook up ArrayList and the methods for adding elements to it. You already have the code to get the numbers out, currently you are just printing them with println. Create an ArrayList to hold the numbers, then whenever you read in a number, add it to the arraylist. After you are done reading the file, do whatever you want with the ... |
hello all i want to add a number and increase an array of Integers. here is my code,it does not work if anyone can correct it please feel free: public void add(int a[],int num){ int newPlace=a.length+1; a= new int[newPlace]; a[newPlace]=num; } this is my array: int arr[]={1,2,3}; as i said i want to increase by one to put in number 4 ... |
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ah sorry about that. I dont understand how to write a compare statement if i do it like that. I understand that if i did reverse it i could do something like. if(Arrays.equals(numbersOne[], numbersTwo[])) { System.out.println("The second array is reverse of the first."); } else { System.out.println("The second array is NOT reverse of the first."); } Sorry bout the mess. Thanks ... |
I am working on a really easy card game called 10 of spades. you just draw cards untill someone gets the 10 of spades, but I am using special effects and music whatevs to make it look better haha. Anyways, I am having a few problems. I am pretty sure all of my pictures are in an ARRAY (props to rustypup ... |
21. Array Help forums.oracle.comSuppose the weekly hours for all employees are stored in a two dimensional array. each row records an employee's seven day work hours with seven columns. For example, the following array stores the work hours for eight employees. Write a program that displays employees and thier total hours in decreasing order of the total hours. |
I have a user input of ten elements of an array, i want to take that and average it out so i would obviously take all my elements and add them up, divide them by ten... well i can get that, but i was trying to make it work with a loop to make things simpler and so i didn't have ... |
Hi all, I've managed to create a bidimensional array, but I can't see where to go on from here... what i want is a bidimensional array that will write the following code: 0-1 0-2 0-3 0-4 0-5 1-0 1-2 1-3 1-4 1-5 2-0 2-1 2-3 2-4 2-5 3-0 3-1 3-2 3-4 3-5 4-0 4-1 4-2 4-3 4-5 5-0 5-1 5-2 5-3 ... |
24. Arrays forums.oracle.com |
Hello, I am supposed to create an array of stacks for a project. It needs to use the generic form of Stack. The stacks hold integers. When I try using this code: Stack[] = new Stack()[10]; I get the error TestofArrayofStacks.java:13: array required, but java.util.Stack found. Can someone please help me with this problem? |
the Comparable data is the barcode of each item. Basically the input of the text file is ABCD, PENCIL, 1, 0.35, 200, 100, 200 PRST, ERASER, 2, 1.40, 30, 45, 100 EWPV, RULER, 2, 0.80, 20, 30, 40 . These items are passed in to the binary search tree a line at a time. Therefore i would like the output file ... |
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It always a good idea to include the error message you get. Paste the exact message don't just paraphrase. In your case, you are attempting to print out the Strings "a[x][0]" and "a[0][x]" not the values, plus you have ommitted the + sign. Also, take a look at the printf method in the PrintWriter class. This will enable you to format ... |
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package assig6; public class ArrayDataVer2 { private double[][] sourceArrayOfArrays; private double[][] targetArrayOfArrays; private double highestLength = 0; private int j = 0; private int numRows; private int i = 0; private double[][] twoDimArrVar; // This will show as unused until you write // the method fillOutTheArrays private double targetArraysFillValue = 0; /** * Make targetArrayOfArrays a rectangular array (i.e. not a ... |
32. array forums.oracle.com |
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How do you know that numberOfEntries isn't buggy? Are you aware that once you find a match in removeFromTop, you keep going through the loop? Are you sure that Entry.equals behaves correctly when it's passed a null? Because if, for example, it returned true when its argument is null, then the loop in removeFromTop would incorrectly set things to null. Why ... |
Same thing again: You have a return statement that will always execute, then you have some more code. The code after that return statement can never be reached because the method has already returned. Same solution again: You either need separate methods for each array, or you need to check both arrays for (whatever) before returning. |
hi, i have two large arrays of booleans and i need to copy all the true values from array 1 to array2 without losing the trues that are already in array 2. From my knowledge of asm, i know that using the AND opperator is perfect for this, seeing as each boolean only takes one bit. Searching and is kinda useless, ... |
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I'm a norwegian student and I have two questions: How do you get your program to calculate the average number of the objects in the array, when there is a 2d array with 15 rows ans 25 cols? Need this in a task I have to deliver by friday. And is this the right thing to do to calculate max number ... |
40. 3-D Array forums.oracle.comso that is the representation that I would want in the array for the LShape and the Block shape. After I have the _shape array I want to be able to fill my _rotation array with the _shape array. That way when I have to do rotations and View Point changes I can rotate the array as a whole instead of ... |
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I need to make a program that lets me input student in an array and then have thier grades inputed into another array......Then i need to create a for statemnt that converts their integer grades into letter grades such a a,b,c,d,f and then i need to alphabetize the students names....i'm so confused on hwo to do this anyone know where i ... |
Sorry if posted in the wrong place. I am trying to find some help as to if it is possible to combine the numbers stored in an (int ) array into one single array. Let say a[0] =1 a[1]=2 a[2]=3 I want to then combine them into one single array such as c[0]=123 |
46. Array help forums.oracle.com |
no, because I'm not really font of NullPointerExceptions, and I think there should be no public attributes. I'd do something like this - (nested for loop) tiles[x][y] = new Tile(x, y, Tile.TERRAIN_MOUNTAIN, 20); If they all have different values, then I'd try to read them from a file and pass the String to the c'tor, for it to parse what the ... |
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i have read out the data from data file....and i created GUI to display the output, need to use array to arrange the output accordingly. i konw it's hard to explain without code.but there's 3 files. with long coding,so anyone can help me i will send the code to you. i will really appriciate your help. pls reply me as soon ... |
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So far I've done the part to get how many positions the turtle has to move plus the display part ( command 6 ) . Now I am stuck. Anybody has any ideas how exactly to implement the "moving" of the turtle ( going forward, turning left / right ) or to implement the current position? Any help is greatly appreciated. ... |
Thanks... but can advise how can i get the absolute value and the max element of an array? says that my array content is {1.323+j2.321, 3.323+j2.323, 3.232+j3.321, 4.321+j2.321, 4.321+j5.433, ....... , 5.323+j2.432} How can i count the absolute value of the complex number then select the max value among the array content... Thank you. |
Happy New Year to all, I have 2 arrays of integer which each array could have a size of 10,000. I wish to develop a code to compare these 2 arrays and pick out those integer number that appear in both array and store it in another array. Anyone got any ideas or guidance for me? Hope it will not take ... |
and I want to do an adding operation base in the following rules: 1) 1st + 2nd 2) 3rd is remain 3) 4th + 5th 4) 6th is remain 5) 7th + 8th 6) 9th is remain 7) the size of array can be dynamic e.g : {1 + 2, 3, 4 + 5, 6, 7 + 8, 9} which will ... |
Hello, I have been trying to design a program that solves the NQueens problem using an ADT Line, Column and Diagonal. I don't know if you are familiar with this problem but this isn't the point. In designing the ADT Diagonal i'm having a little trouble finding an effective method that returns the diagonal within a position a[x][y]. For instance, char ... |
blias wrote: I know this is coming from min = array[0]; but I can't think of other way that would give me the correct output. Think it through. You initialize min to some value. Then for each non-zero element, you check to see if that element is less than the current min, and if it is, you give min a new ... |
I have created a class of objects, with fields, constructors, methods, etc. So far, so good. Now I would like to create an array of these objects, and I have some methods that I would like to create that would manipulate the objects in an array. Is it possible to create a class that extends array, and that is always an ... |
Your example: {10, 2, 3, 4, 5, 2, 3}. When you reach the end of the array, you know 2 is the minimum and it appears twice (count is 2). Random.nextInt(count) will return sometimes 0, sometimes 1. Assume it returns 0. You loop throwgh the array again and you stop at the first 2 you find at index 1. Assume it ... |
I want to edit the array.--------int array2[] = new int[3][3]; (up 9 lines) Instead of specifying it as [3][3] for size. I would like to say new int - length of row and column - im pretty sure it is similar to the ints below - but cant seem to get the correct combination. Thanks in advance for any help folks. ... |
--- I tried making a Matrix object and overriding equals and hashCode, but I'm not quite sure what to change. The Java API says the hashCode for arrays is based on the content, though the following code gives back the same hashCode twice. I don't really understand this: int[] a1 = {0,1,2}; System.out.println(a1.getHash()); a1[0] = 1; System.out.println(a1.getHash()); |
I am new to java and I am having trouble coming up with a "read a record from array" method. I have delete and add methods that look like the following //add method public ItemArray addInventoryID( ItemArray ID ) { inventoryID[count++] = ID; return ID; } //delete method public void delete( int index ) { for ( int i = index; ... |
64. java array forums.oracle.com |
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You can't remove elements from an array. An array's size is fixed at creation time. If you mean you want to reset all the elements to some particular value, look at java.util.Arrays. It may have a method to do that. If not, just write one yourself; it's only about 3 lines of actual code. Edited by: jverd on Aug 24, 2011 ... |
Actually we can't judge anything from that code, since the forum software has mangled it. Please repost it in the {code} tags, that's what they are there for. (There's a link at the top of the forum which tells you how to use them.) Also when you repost it would be helpful if you could also post a description of your ... |