I have,
int[10] oneDim = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, index = 0;
as shown here, we create the the two dimensional one from the origin. But ... |
Out of curiosity, how many dimensions of an array can you have in java.
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hi i am new to java.After so research about what i am facing, i try post to ask some question.
recently i am doing a text analyse software.
and i try to get ... |
I'm a Java noob. I don't know very much about the language (at least, not enough to do complex things) right now, but I'm getting there!
I know you can test the ... |
is there any performance difference between these two arrays in java (may be relevant for J2ME development...):
String[][][] a = //for getting an entry by a[group][person][field]
{
...
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I have an array like this :
A =
10 11 12 13 14 15 16 0
17 18 19 20 21 0 0 0
22 23 24 25 26 27 28 ...
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Hi, I have the requirement in the project to store the single dimensional array value to multi dimensioinal array. e.g. I ve array of blocks(area)from which I want to split each block(area) into X,Y-co-ordinates and store it in 2 dimensional array. int[i][j]=pix[i][];something like that. So how can I achieve it.right now I m getting INCOMPATIBLE TYPE error.please it is urgent. |
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I can think of no reason there would be in the language. It's possible that there is some limitation in the class file format or JVM. But as far a s the language goes there isn't any limit to the number of dimensions. [ February 04, 2003: Message edited by: Jon Strayer ] |
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In your two dimensional array example, referring to the first dimension as the row, and the second as the column is merely a human way to conceptualize such a datastructure - these aren't Java terms or notions. So, you can conceptualize a three dimensional array any way you'd like. Some people might envision a 3D cube like structure. Some people might ... |
Hi all, I have this question, say if I declare a 2D array for example; int arr[][] = new int[2][2]; and declare a single dimensional array; int x[] = new int[3]; so my question is that can I assign like this; arr[1] = x; Upto to my knowledge the size of the array once declared can't grow. But here it's not ... |
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In Java, 1. You can have arrays in Java, but you can't have multi-dimensional arrays. What appears to be a 2-directional array is not that; it is actually a 1-dimensional array of 1-dimensional arrays. What appears to be a 3-dimensional array is not that, it is a 1-dimensional array of 1-dimensional arrays of 1-dimenisonal arrays. That means you can write int[][] ... |
This is actually metioned somewhere in the JVM specification -- as part of a list of limitations. IMHO, it is pretty well buried in the document. Basically, there is a limit of 255 "dimensions" of arrays that can be declared. But I agree with Peter, using that many is horribly unwieldy, and should be avoided. Henry |
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Originally posted by Badri Narayanan: Why does this code is not legal ? Does this mean array dimension are read from left to right ?(Associativity for [] operator).I don't find a reason or simply could understand the reason.Can somebody gimme me more example to explain Thanks -Badri Okay, this code: int [][] testArray = new int[3][4]; Means to allocate an array ... |
I am learning Java, and am only up to as far as arrays go. Here is a code from the book I am using: class UnevenTwoDimensionArrayInitializer { public static void main(String args[]) { //Declare, allocate, initialize int myarray[][] = { {33, 71}, {-16, 45, 50, -7}, {99} }; //Display lengths of the array and its elements System.out.println("myarray.length = " + myarray.length); ... |
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hello, I am just getting started with Java and it's good fun. I'd need to know a couple of things. I hope someone here will be able to shed some light on the following questions for me First: is it possible to have a multi dimension array using different types of variables? let's say the first dimension would be int, the ... |
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sabre150 wrote: I don't know and I most definitely don't care since anything more than 2 is, in my opinion, just silly. It's also quite untractable from a memory standpoint. Say you have an 10 by 10 by 10 array. That's 10^3 elements. Now say you have 250 dimensions, that's 10^250 elements which is a huge number in the order of ... |
You can create a two dimensional array of Objects. You can also create a two dimensional ArrayList, as you say, with an ArrayList of ArrayLists... or a Vector of Vector's... or indeed a Collection of any other type of Collection... mix and match as you see fit. One thing to remember with big collections is that arrays are a LOT smaller ... |
Hello, I am trying to build a termite simulation. For the simulation, I need to create a 3 dimensional grid made up of cells (similar to how a rubiks cube is made up of smaller cubes) that will act as the termites' environment. I have managed to implement the grid as a 3 dimensional array of cell objects, and each cells' ... |
Hi everyone! I am writing a program whre a user enters a polynomial and it its coefficient as well as exponent is stored in a 2 dimension array. For example, if a user entered the following: 4x^3 + x^2 + 3x + 5 the array would store the following coefficient | power of x 5 | 0 3 | 1 1 ... |
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A constructor is just like a method, it can have parameters. So you need to write a constructor that has a single int parameter. You then use that parameter to determine the size of the array (instead of the hardcoded 10 in my example). Perhaps you need to read about constructors/methods/parameters again. |
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