Arrays.toString problem

Hello,
I'm trying to print out the values of an integer array using the method toString(int a[]) of the Arrays's class. While doing it, I encounter the following error:
Array.java:17: toString() in java.lang.Object cannot be applied to (int[])
          System.out.println (Arrays.toString(a));
The source code is the following:
import java.util.*;
class Array{
     public static void main (String[] args){
          int[] a = new int[10];
          Random rand = new Random ();
          for (int i=0; i<a.length; i++)
               a= rand.nextInt(10);
          Arrays.sort(a);
          System.out.println (Arrays.toString(a));
Hope someone can help me!
Thanks a lot.
Gabriel

sabre150 wrote:
Sounds like an interesting little project. I've been trying to write an article on cross platform/language encryption so I've been doing little bits of C/C++/C#/Python/PHP/JNI . I don't find writing easy so the task is turning out to be a lot bigger than I anticipated.
I have fond memories of electric shock treatment. Having trained as an Electrical Engineer I spend the first 4 years of my working life trying to kill myself. Nearly succeeded twice. Now I long to get back to the sort of breadboards that you are working on but no real chance. I would like to create a playing card dealing system but my hardware knowledge is so out of date that I don't really have a hope.Stay far away from hardware; I once fell for it and designed a little logic game in hardware (Nim); I got it all together, including the total costs (just a few bucks) and happily went to the electrickery store. They laughed at me and told me about power supplies and debouncing switches and buffers for the LEDs and what have you. After an hour I stood outside again after having spent almost 200 bucks. I started soldering and I soldered and soldered; in the end I had a big blob of spaghetti and it didn't work. I started all over again and I ended up with an even bigger blob of spaghetti that didn't even fit anymore in the little box I bought. But it worked.
I had fun for almost 10 minutes until my little rabbit (I kept it as a cat) saw it, chewed on the spaghetti blob and it never worked again ... so far for hardware; don't go there.
kind regards,
Jos ;-)

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Error using Arrays.toString()

Hi there,
I am getting the following error using Arrays.toString on a String Array. 'toString() in java.lang.Object cannot be applied to (java.lang.String[]).
The line in question is at the bottom of the below code. It starts 'rtitem.appendText.....
import lotus.domino.*;
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No, that doesn't make any sense. Arrays.toString can take any array as an arg: [http://java.sun.com/javase/6/docs/api/java/util/Arrays.html#toString(java.lang.Object[])]
import java.util.*;
public class A {
public static void main(String[] args) {
    String str = Arrays.toString(args);
    System.out.println(str);
:; java -cp . A abc 123 xxx
[abc, 123, xxx]

Associative Array (Object) problems

Here is the function i'm dealing with
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but outside the loop, the only key is the variable name and
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trace("line 134: suspendDataArray is: " +
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on lines 12-13 i assign the key=value pair to string
variables
then on lines 17-18 i assign those values to the associative
array using dot notation
the trace seems to work there
the problem is that when the procedure exits the for loop,
the associative array only has one key (myKey) and no value
(undefined)
all the documentation i've read shows using these types of
arrays with either non-quoted property names like:
myAssocArray.myKey = "somevalue";
or
myAssocArray[myKey] = "somevalue";
i tried assigning the key/value pairs directly from the
indexed arrays, but the result was always undefined
like this:
suspendDataArray.keyValArray[0] = keyValArray[1]
or
suspendDataArray[keyValArray[0]] = keyValArray[1]
i even tried building a string in the loop and trying to
assign all the pairs at once using the curly brace
this is pretty wierd behavior for actionscript or i'm missing
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Spreadsheet to array memory problems

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Attachments:
ExtractPortion.vi ‏33 KB

Hey all,
The in place element structure should be relatively straightforward, once you understand the concept behind it, which is that it keeps everything in the same memory location and does think about resizing it. Thus, deleting items in an in place structure would not function. Replacing items should however, as discussed in this help document: http://zone.ni.com/reference/en-XX/help/371361G-01/glang/in_place_element_structure/ and as shown here:
I tried to reproduce your issue, but I managed to make both notepad and word crash in the production of a large enough CSV file. My recommendation is go ahead and split the file up if at all possible. Since you said the code fails on the delete node, you could also simply use the array subset function to pull out all but the line you want to delete, rather than asking labview to give you a second memory location. On the other hand, on my computer the problem occurs at the VI which converts to a spreadsheet string--however, if I set .csv to false (meaning that VI does not have to convert to a float) it does not have a problem. My suggestion would be to convert it to a string first, then use the in place element structure to convert items one by one to the %f format, rather than %s. This is especially true since you are converting string to %f and then back to string (because you selected a 2-d string array as your output).
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Array declaration problems

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int array1[];you must initilize the array1
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Array index problem in formula node

dear friend
I'm trying to use formula node to solve a problem because I make this program using c at the begining.
It runs perfectly in turbo c, but somehow it doesn't work in the formula node.
I try to debug my source code, and I find that the formula node seems can't read the true value in
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Here is the code in the formula node.
int32 i,j,k;
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j = 1;
ep[i][0] = pa[i];
ep[i][1] = np[ep[i][0]][0];
while ( ep[i][j-1] != exit )
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This is the part that I think the problem might be.
if ( np[ep[i][j-1]][k] != -1 && (pc[ep[i][j-1]][ep[i][j]] + pc[ep[i][j]][exit] >= pc[ep[i][j-1]][np[ep[i][j-1]][k]] + pc[np[ep[i][j-1]][k]][exit] ) && (pc[ep[i][j-1]][np[ep[i][j-1]][k]] == org[ep[i][j-1]][np[ep[i][j-1]][k]] ))
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Thanks for your help

altenbach 已寫:
normanshi wrote:
ep[i][0] = pa[i];                                          (A)
ep[i][1] = np[ep[i][0]][0];                            (B)
...    if ( np[ep[i][j-1]][k] != -1 && ... )          (C)
      ep[i][j] = np[ep[i][j-1]][k];                       (D)
I state that "np[ep[i][j-1]][k] != -1" but I do get the value -1 in the array "ep".
Could someone tell me why I get -1 in the array?
I hope I can finally do it all by labview not using formula node,but array like "pc[ep[i][j-1]][np[ep[i][j-1]][k]] "
seems very hard to wire in labview. Could someone give me some good advices of doing this?
There are many possible scenarios to get a -1 in the ep output. For example if the -1 gets already written in step (A) or (B) at a certain index, and that index does not get overwritten in step (D). You are indexing all over the place! Is there some bounds checking on the array contents? What are typical inputs and array sizes?
I'm sure about that the -1 doesn't get already written in step (A) or (B) because ep[i][0] and ep[i][1] is fine. What really makes me confuse is that sometimes ep array has the value like this.
That means it does overwritten some value in step (D). The -1 should never be written into it because I have already state that np[ep[i][j-1]][k] != -1. Somehow I still get -1,and this is really strange! I'm indexing all over the place becuase I can't figure out a better way to achieve my requirement.
I think I should briefly tell you what I'm trying to do. In this program,I input some values which means the distance from one point to another. Then I use floyd's all pairs shortest-path algorithm to find all the shortest distance. Finally I want to find out the "shortest path". I mean like from point 4 to point 0,the shortest path might be like 4 -> 2 -> 1 -> 0, and what the formula node part do is trying to find out this "shortest path". Maybe you can give me some better advice of doing this, I have been thinking a better way to do it for about two months. I think I'm really not good at this.
I try to do it all by labview ,but again I get a strange problem. This time the ep[i][j-1] doesn't get the correct value. In the first time i=0 j-1=0 ep[i][j-1] = 1,but the second time i = 0 j-1 = 1 ep[i][j-1] = 0. This makes the "ep[i][j-1]!=exit" get the incorrect boolean value. The ep[i][j-1] should be 2,not 0. I try to use highlight to find if I make any mistake, but I can't one.This is the input and I put the labview program in attached file (temp4.vi).
Could you help me find out why this happened?
Thanks for your help altenbach!
由 normanshi 在 08-19-2006 10:06 PM 上編輯的訊息
Attachments:
temp4.vi ‏191 KB
ep.jpg ‏10 KB
input.jpg ‏9 KB

Control Array Access Problem while loading panel on 2 Tabs

I am using LabWindows CVI 10.0. My intention is to programmatically disable a control array in a panel.
Problem:
I am loading a panel with control array in TabControl pages - Tab0 and Tab1.
Error occurs, While programmatically accessing through below functions.
GetCtrlArrayFromResourceID( Tab0_panel, CTRLARRAY) - Able to get resource ID.
GetCtrlArrayFromResourceID( Tab1_panel, CTRLARRAY) - Not able to get resource ID.
Its giving error as Resource ID not found in UIR.
Error picture i have attached below for reference.
Please give some suggestions.
Solved!
Go to Solution.
Attachments:
Error.PNG ‏7 KB

Ok, if you didn't use it so far you should use it now : If you are accessing controls on a tab panel you have to use the correct panel handle using the function GetPanelHandleFromTabPage, you can not simply use the constant defined in your UIR.
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Hi,
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I always get an "')' is expected" error...When you have mismatched parenthesis the error may not be where it's reported. I guess you have more methods so carefully check that the ( mathches the ) in the class all the way through.

JRockit 1.4.2 array clone problem

JRockit 1.4.2 throws an IllegalAccessError on array cloning code produced by javac
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I can confirm this problem. We are working on a fix for the next service
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Regards,
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Nathan Bronson wrote:
JRockit 1.4.2 throws an IllegalAccessError on array cloning code produced by javac
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Array Copy Problem

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Deo_Favente wrote:
ARRAY COPY DOESN'T WORK.
YES. YES IT DOES. WHY DO YOU THINK THAT IT DOESNT WORK? WHY DON'T YOU POST WHATEVER CODE THAT YOU DO HAVE THAT IS CAUSING YOU PROBLEMS AND THEN MAYBE WE COULD WORK WITH IT. I THINK THAT'S A BETTER IDEA PERSONALLY, AT LEAST OPPOSED TO WHAT YOU DID HERE._+

Beginner : Array , String Problems continue.

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As long as now I have only, strings assigning to array. So there are strings in array but I do not know how to write code where I can find given letter by user.
I just do not know how I should think(anymore at all ;)) here. I am really frustrated and desperate, how to understand this?? Once and for all!!!
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Thank you very, very much for helping me, this is the first forum where I am getting any answers at all. Thanks guys!
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Here is another problem, with help of indexOf(char) I got index for character I searched, fine.
The way i wrote the code I got separate answer for each string(check in code). What I need to have is, separate printed strings where given character is found and nothing else should be printed. Later, I need just one general comment ,only in case if character is NOT found in given strings.
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System.out.println();
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How many strings ?4
String 1: hello
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String 4: batman
Write a letter you wish to find :a
Nothing in this string
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String 3 alex
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Write a letter you wish to find :a
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String 4: batman
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HI everyone I am looking for some help on an array problem.
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apple
orange
pear
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String[] words;
int i;
try {
BufferedReader reader = new BufferedReader(new FileReader("wordlist.txt"));
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for(i = 0; i < words.length; i++){
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if(findWord.equals(words[i])) {
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I I read in
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Correct me if Im wrong but I think I have created the
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Inside the loop, where you do words = split you're creating a new array each time. (And like I said, if there's only one word on a line, you don't need to spilt.)
As for putting the next
lines word into the array on each loop pass I do not
understand how to do this. Any help would be
appreciated?
for (int ix = 0; ix < numLines; ix++) {
arrar[ix] = the line that you just read
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Our main problem is quark files, I can open them on my mac using quark 6 as it's osx based, but I'm the only one in the company who has quark 6, is there any way of re-cxreating the resource forks so that they can be read by quark 4? Is there a nifty 3rd party piece of software that will scan a volume and rebuild all the resource forks for the os9 files - or am I just clutching at an impossible dream!!!!

Think I've fixed it.
By adding a physical extention (.qxd) to the end of the quark file then opening it from within quark and not via double-clicking, it opens, once you save it from here the file is fine and the same as it was before.
For some reason, even with the .qxd extention it won't open in quark by double-clicking, only through the file menu. Also it won't work if you try this on an osx machine, only if you're booted in os9.
weird but it works.

Array Splice problems...

Hi i am loading in xml into Flash
<question ID="n3.1a" level="3" />
<question ID="n3.2b" level="3" /> ... etc all the way
to n3.12b
So what i am trying to do is to Splice the array into 2 parts
all the questions ID's that are A and all that are B for for
example an array with:
level3a_Array = [n3.1a,n3.2a,n3.3a,n3.4a]
level3b_Array = [n3.1b,n3.2b,n3.3b,n3.4b]
but i am having problems with the code below trying to splice
them, so any help would be great!!!
var diagnosticXml:XML = new XML();
diagnosticXml.ignoreWhite = true;
diagnosticXml.load("databank/databank.xml");
diagnosticXml.onLoad = function(success:Boolean){
if(success){
aLevel = diagnosticXml.firstChild.childNodes;
lev3Array = aLevel[0].childNodes;
for(var a=12; a>0; a--){
var level_3:Number = _root.aLevel[0].childNodes.length;
_root.aLevel[0].childNodes.splice(0, 1);
lev3B_Array = _root.aLevel[0].childNodes.splice(0, 1);
trace("lev3Array: "+ lev3Array);
}

intialize both arrays and then push every other node into
your arrays.

Array copying problems

I'm sure this is a stupid question, but I'm not immensly knowledgeable about all the ins and outs of Java yet.
I have 2 arrays of 81 elements, one known as groups and one as tempGrps. I used the System.arraycopy(groups,0,tempGrps,0,81) to copy groups to tempGrps. The problem I am encountering is that when groups is modified after the arraycopy, the same modifications are made to tempGrps. I have a small routine in place that checks the contents of tempGrps. When the arraycopy command is in place, tempGrps has the modifications that are made to groups also made to it. When the command is not there, tempGrps remains empty(this was tested to make sure I wasn't somehow modifying it somewhere else). What is going on here? The entire reason for the tempGrps array was to hold a temporary backup of the groups array.

Could you explain this please? I mean, when I say
MyObject = new
MyObject(objectToCopy);How do I end up with
the wrong type of Object?Easily: When objectToCopy is a MyCustomObject that is
derived from MyObject.I think I see what you're saying - though, by explicitly saying that (woops, forgot the reference name there) myObject is of type MyObject, it's obvious you wanted a MyObject out of that ctor call, and since MyCustomObject is a MyObject then I think it's a stretch to say you get the wrong object type back.
>
Disclaimer: I haven't really read the article yet and
don't feel strongly for either side of the argument,
that's just one problem I've spotted.

Arrays.toString problem

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