Creating an Array of Strings
Does anyone know how to create an array of three strings? I need to then prompt a user for the three strings and enter them into the array...No idea how to code this at all.
i'm not quite sure about your problem,anyway i've posted a snippet hope this helps,if not explain in detail.. :)
import java.io.*;
class ts{
public static void main(String as[]) throws Exception{
int j=3;//no of strings to be inputted i.e 3 in ur case
String sArray[]=new String[j];
for(int i=0;i<j;i++){
BufferedReader reader = new BufferedReader
(new InputStreamReader(System.in));
System.out.println("Enter name"+(i+1));
sArray[i] = reader.readLine();
for(int i=0;i<j;i++){
System.out.println("array name"+(i+1)+" = "+sArray);
Similar Messages
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"Using a CIN to Create an Array of Strings in LabVIEW" example crashes LV on Linux
Tried to utilize this NI example: "Using a CIN to Create an Array of Strings in LabVIEW" (http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B4B282BE7EF907C8E034080020E74861&p_node=&p_source=External)
Compiles OK with the makefile made by the LV's lvmkmf utility. Nevertheless when I try to run the VI (with the code loaded into the CIN, of course), LabVIEW 7.1.1 on a SUSE 9.3 Linux machine crashes:
LabVIEW caught fatal signal
7.1.1 - Received SIGSEGV
Reason: address not mapped to object
Attempt to reference address: 0x0
Segmentation fault
Any ideas? Did anybody try this on a Windows machine?H View Labs wrote:
Tried to utilize this NI example: "Using a CIN to Create an Array of Strings in LabVIEW" (http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B4B282BE7EF907C8E034080020E74861&p_node=&p_source=External)
Compiles OK with the makefile made by the LV's lvmkmf utility. Nevertheless when I try to run the VI (with the code loaded into the CIN, of course), LabVIEW 7.1.1 on a SUSE 9.3 Linux machine crashes:
LabVIEW caught fatal signal
7.1.1 - Received SIGSEGV
Reason: address not mapped to object
Attempt to reference address: 0x0
Segmentation fault
Any ideas? Did anybody try this on a Windows machine?
This code is badly broken. In addition to resizing the actual handle to hold the number of string handles you also would need to create the string handles itself before attempting to write into them. NumericArrayResize is the fucntion to use as it will either resize an existing handle (if any) or create a new one if the value is uninitialized (NULL).
/* resize strarr to hold handles to NUMSTRINGS strings */
err = SetCINArraySize((UHandle)strarr, 0, NUMSTRINGS);
if (err)
goto out;
/* perform this loop once for each element */
/* of array of strings being created */
for (i = 0; i < NUMSTRINGS;) {
LStrHandle handle = (*strarr)->arg1[i];
/* determine length of string that will be element of strarr */
strsize = StrLen(str[i]);
err = NumericArrayResize(uB, 1, &handle, strsize);
if (err)
goto out;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/* moves strsize bytes from the address pointed to */
/* by str[i] to the address pointed to by the data pointer in the handle */
MoveBlock(str[i], LStrBuf(*handle), strsize);
/* manually set size of string pointed to by *strarr */
(*((*strarr)->arg1[i]))->cnt = strsize;
/* manually set dimSize of strarr */
(*strarr)->dimSize = ++i;
return noErr;
out:
return err;
Rolf KalbermatterMessage Edited by rolfk on 06-30-2005 03:15 AM
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions -
How can I create a custom data type that is a 2D array of string by using TestStand API?
Hi all,
I'm new in TestStand:
I'm able to create a custom data type that is a 1D array of string but I cannot find the way to create a 2D array of string.
Can anyone help me?
Thank you in advance.
FedericoI made it!!
Indeed my 2D array is an item of a container:
/* Create a new container */
RunState.Engine.NewPropertyObject(Locals.NewDataType,PropValType_Container,False,"",0)
/* Create an array of strings as item of the container */
Locals.NewDataType.NewSubProperty("Array_2D",PropValType_String,True,"",0)
/* Reshape the array as an empty 2D array */
Locals.NewDataType.GetPropertyObject("Array_2D",0).Type.ArrayDimensions.SetBoundsByStrings("[0][0]","[][]")
being:
NewDataType a local property (type Object)
Attachments:
AddCustomTypeAndCreateFileGlobals.seq 11 KB -
Help creating 2D array from tab delimited text file
I can print the info from the file, but darned if I can't make a 2-D array.
import java.util.regex.*;
import java.io.*;
public final class goodSplitter {
private static BufferedReader br;
private static BufferedReader br2;
private static String INPUT;
private static int numLines;
private static int numLine2;
private static int q;
private static int t;
private static int n;
private static String [][] indexArray;
public static void main(String[] argv) {
initResources();
processTest();
closeResources();
private static void initResources() {
try {
br = new BufferedReader(new FileReader("index.txt"));
System.out.println("found the input file.");
} catch (FileNotFoundException fnfe)
System.out.println("Cannot locate input file! "+fnfe.getMessage());
System.exit(0);
try {
br2 = new BufferedReader(new FileReader("index.txt"));
System.out.println("found file again.");
} catch (FileNotFoundException fnfe)
System.out.println("Cannot locate input file again! "+fnfe.getMessage());
System.exit(0);
try {
int numLines = 0;
while ( ( INPUT = br.readLine( ) ) != null )
{ numLines++; } // end while
System.out.println("file has the number of lines: " + numLines);
q = numLines;
System.out.println("creating the array.");
String [][] indexArray = new String[q][];
System.out.println("populating the array.");
while ( ( INPUT = br2.readLine( ) ) != null ) {
n = t++;
System.out.println("first array index = " + n);
String[] ss = INPUT.split("\\s");
for(int i = 0; i < ss.length; i ++)
System.out.println( new String( ss[i] ) );
indexArray[n] = ss[i];
} // end for
} // end while
} catch (Exception e)
{System.out.println("something went wrong in populating the array of length " + q); }}
private static void processTest() { System.out.println("processed text."); }
private static void closeResources() {
try{ br.close(); }catch(IOException ioe){} }you haven't sized the 2nd part of the 2d array
add this line
String[] ss = INPUT.split("\\s");
indexArray[n] = new String[ss.length];//<--------------
for(int i = 0; i < ss.length; i ++)
but note you have declared indexArray both as a class variable
private static String [][] indexArray;
and a variable local to the try/catch block
String [][] indexArray = new String[q][];
probably what you want is
indexArray = new String[q][]; -
How do I resize an array of strings in a CIN ?
I've been using a call to NumericArrayResize() to allocate enough memory for numeric arrays, but I now have an array of strings that I need to build in a DLL/CIN and pass back to Labview. Can someone point me to a snippet that will demonstrate how to populate an array of strings with data?
Kindest,
WarrenCheck the follwing example. It may be what you want:
Using a CIN to Create an Array of Strings in LabVIEW
http://zone.ni.com/devzone/devzoneweb.nsf/opendoc?openagent&AD517F5DCCAF70228625683A000A570F&cat=2F4F574886553A62862567AC004F032D
Also, check the following example, as it provide an example on how to handle strings.
Code Interface Node (CIN) That Converts a LabVIEW String to a C String, Modifies it, and Returns it as a LabVIEW String
http://zone.ni.com/devzone/devzoneweb.nsf/opendoc?openagent&D978409908EA760D8625683A000B6B6E&cat=2F4F574886553A62862567AC004F032D
Regards;
EV
www.vartortech.com -
How to create an array list of strings by using buttons?
HI, i need some guidance from you guys to help me out. How do i create a list of array whenever i click on a button it will generate a string and place it in an array row by row. if i dont click on the button it will ignore it and wont create the array. i have tried many technics such as looping and building array but it wont generate the list that i want.
Attachments:
untitled.JPG 97 KBI am not sure if I have understood your question correctly, but is the attached what you were looking for?
Adnan Zafar
Certified LabVIEW Architect
Coleman Technologies
Attachments:
Example.vi 12 KB
example.JPG 100 KB -
Creating array of strings in Webi
In Webi I need to create array of string in one formula and want to use that formula in another formula, Now my issue here is how can I create a array in webi.
Please help me.
Thanks
SivaHi,
I didn't see any option for creating Array in WebI .
You will have to do it in Backend . -
How do I create an array with variables also splits words in a txtfile?
Hello guys,
I made a script that reads a text file.
function readMyFile()
var myFile=File(app.activeDocument.filePath + "/LareLog.txt");
if (myFile.exists)
myFile.open("r");
var Temps = myFile.read();
alert (Temps); // message the content
var nyRad=("\n"); // break the line
textArr=Temps.split(nyRad);
alert(textArr); // message the content with all info on new lines ("\n");
myFile.close();
my textfile contains:
~/Desktop/3.indd ,Thu Mar 20, 2014, 11:26:34 , GMT+0100
I wonder how do I sort the content in array
in this order, also creates variables for each string.
var= string 1[~/Desktop/3.indd]
var2=string 2[11:26:34]
var3=string 3[11:26:34]
var4=string 4[2014]
var5=string 5 [GMT+0100]
Thank you in advance people.Hmmh?
Jump_Over said it before: „… are stored as separate array's elements …“ in your [textArr]
So you can create now variables on this way:
var string_1 = textArr[0]; // and so on
alert(string_1);
See Java Scripting reference for more examples how to use Arrays. -
Easy way to create a list of strings in an object?
I'm trying to create a HashSet of Strings but I don't want to have to add each string to the HashSet. There is a constructor for HashSet that allows you to give it a Collection. But how can I create a Collection of String other than having to add each string? Can I just :
HashSet hs = new HashSet("String1", "String2", "String3", "String4");
?This programming problem is as old as the hills, and there are a zillion ways to do it. One of the simplest is by using String.split. Example: String separator = "[^\\w]+";
String string = "I think, therefore I am; or maybe not. What do you think?";
String[] array = string.split(separator);
System.out.println("String : \"" + string + "\"");
System.out.println("Word count: " + array.length + " words.");The key is the String separator. This is what is known as a "regular expression." It looks pretty obtuse (and is); do some research on regular expressions to figure out it means.
This example does not account for a few special cases, such as words split between lines with hyphens, and perhaps words enclosed in double quotes. That is left as an exercise for the reader. -
How to create an array with Generic type?
Hi,
I need to create a typed array T[] from an object array Object[]. This is due to legacy code integration with older collections.
The method signature is simple:public static <T> T[] toTypedArray(Object[] objects)I tried using multiple implementations and go over them in the debugger. None of them create a typed collection as far as I can tell. The type is always Object[].
A simple implementation is just to cast the array and return, however this is not so safe.
What is interesting is that if I create ArrayList<String>, the debugger shows the type of the array in the list as String[].
If I create ArrayList<T>, the class contains Object[] and not T[].
I also triedT[] array = (T[]) Array.newInstance(T[].class.getComponentType(), objects.length);And a few other combinations. All work at runtime, create multiple compilation warnings, and none actually creates T[] array at runtime.
Maybe I am missing something, but Array.newInstace(...) is supposed to create a typed array, and I cannot see any clean way to pass Class<T> into it.T[].class.getComponentType()Returns something based on object and not on T, and T.class is not possible.
So is there anything really wrong here, or should I simply cast the array and live with the warnings?
Any help appreciated!Ok. May be you could keep information about generic type in the your class:
public class Util {
public static <T> T[] toTypedArray(Class<T> cls, Object[] objects){
int size = objects.length;
T[] t = (T[]) java.lang.reflect.Array.newInstance(cls, size);
System.arraycopy(objects, 0, t, 0, size);
return t;
public class Sample<T> {
Class<T> cls;
T[] array;
public Sample(Class<T> cls) {
this.cls = cls;
public void setArray(Object[] objects){
array = Util.toTypedArray(cls, objects);
public T[] getArray(){
return array;
public static void main(String[] args) {
Object[] objects = new Object[] { new LinkedList(), new ArrayList()};
Sample<List> myClass = new Sample<List>(List.class);
myClass.setArray(objects);
for(List elem: myClass.getArray()){
System.out.println(elem.getClass().getName());
} -
[CS3][JS] How to turn negative number in array into string
Hello,
I have a script that compares the array of the geometric bounds of all text frames to the margins for a document (all pages having the same margins). Any frames that do not match the margins are flagged.
In order to compare the array of text frame geometric bounds to two arrays of margins (because they are facing pages), I have to convert the numbers to strings.
My problem is that in the following snippet of code that creates the two margin arrays, the negative of the variables become numbers again. This would not be too difficult to solve except that all the numbers have to be 4 decimal points before converted to strings.
Thanks,
Tom
var myDoc = app.activeDocument;
var marginY1 = myDoc.pages.item(0).marginPreferences.top.toFixed(4);
var marginX1 = myDoc.pages.item(0).marginPreferences.left.toFixed(4);
var marginY2 = (myDoc.documentPreferences.pageHeight - myDoc.pages.item(0).marginPreferences.bottom).toFixed(4);
var marginX2 = (myDoc.documentPreferences.pageWidth - myDoc.pages.item(0).marginPreferences.right).toFixed(4);
var marginsRHand = [marginY1, marginX1, marginY2, marginX2];
var marginsLHand = [marginY1, -marginX2, marginY2, -marginX1];Well, I think I have solved it. But I don't know why this solves it.
I would think that in the above script all the variables would be numbers and not strings. But the data browser says they are strings.
The solution is:
var marginsLHand = [marginY1, Number(-marginX2).toFixed(4), marginY2, Number(-marginX1).toFixed(4)]
If someone can explain why now all variables in the arrays are strings and not numbers, I'll be happy.
Tom -
Hi,
I have an array of strings like:
private String myStrArr[];
myStrArr = new String[256];
I have to get rid of hard coded size.
Is it ok to use vector instead , or is there another way to get rid of hard coded size.
If we can use vector instead , is there a solution similar for booleans??
I also have an array of booleans:
private boolean myBoolArr[];
myBoolArr = new boolean[256]You can wrap the primitive booleans you have in the Boolean class via
myList.add(new Boolean(primitiveBooleanValue));Even better, to save space, use the already existing Boolean values instead of creating new ones. If you are using Java 1.4, you can:
myList.add(Boolean.valueOf(primitiveBooleanValue));Otherwise you can do one of these:
myList.add( primitiveBooleanValue ? Boolean.TRUE : Boolean.FALSE ); -
Trying to create an array of a class
This is the first time ive tried to use an array so its not surprising im having trouble.
this is my program:
import java.util.*;
public class studentRecordDemo
public static void main(String[] args)
int studNum, index;
System.out.println("Enter the number of students you wish to record");
Scanner keyboard = new Scanner(System.in);
studNum = keyboard.nextInt();
studentRecord student[] = new studentRecord[studNum];
for (index = 0; index < studNum; index++)
{student[index].readInput();
student[index].writeOutput();}
}And it lets me compile it but when i enter a number it gives me the error:
Exception in thread "main" java.lang.NullPointerException
at studentRecordDemo.main(studentRecordDemo.java:15)the
So yeah im trying to create an array of the class "studentRecord" and the number is input by the user. Is there a way to make that work or would it be easier to just make the array a really high number?your error is in here:
student[index].readInput();its null...
This is the first time ive tried to use an array so
its not surprising im having trouble.
this is my program:
import java.util.*;
public class studentRecordDemo
public static void main(String[] args)
int studNum, index;
System.out.println("Enter the number of students
ts you wish to record");
Scanner keyboard = new Scanner(System.in);
studNum = keyboard.nextInt();
studentRecord student[] = new
ew studentRecord[studNum];
for (index = 0; index < studNum; index++)
{student[index].readInput();
student[index].writeOutput();}
}And it lets me compile it but when i enter a number
it gives me the error:
Exception in thread "main"
java.lang.NullPointerException
at
studentRecordDemo.main(studentRecordDemo.java:15)the
So yeah im trying to create an array of the class
"studentRecord" and the number is input by the user.
Is there a way to make that work or would it be
easier to just make the array a really high number? -
How do I get ColdFusion to put information in the WSDL to show it returns an array of strings?
How do I specify that the return value of my web service is an array of strings?
Saying
<cffunction name="getInfoSources" access="remote" returntype="string[]">
produces the error:
coldfusion.xml.rpc.CFCInvocationException: [coldfusion.xml.rpc.SkeletonClassLoader$UnresolvedCFCDataTypeException : Cannot resolve CFC datatype: string.]
when I try to create the WSDL
I know that I can specify "array", which puts into the WSDL:
<wsdl:part name="getInfoSourcesReturn" type="impl:ArrayOf_xsd_anyType"/>
I want users of the service to know that the array is specifically made up of _strings_.
Thanks!
-- Mabel :-)
[email protected]What if you click Never remember for this site and later change your mind? There should be a way to remember the username and password later if you'd like. I installed the Saved Password Editor 2.6.3 extension and added in the information manually i.e. by choosing New and it still isn't making a difference. What happened to the live chat support Firefox used to have?
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How to create an array of generics?
I have the following snippet of code using array of vectors:
Vector[] tmpArr = new Vector[n];
for(int j=0; j<n; j++)
tmpArr[j] = new Vector();
String str = ...
if (!tmpArr[j].contains(str))
tmpArr[j].add(str);
And I want to convert to generics:
Vector<String>[] tmpArr = new Vector<String>[n];
for(int j=0; j<n; j++)
tmpArr[j] = new Vector<String>();
String str = ....
if (!tmpArr[j].contains(str))
tmpArr[j].add(str);
But the first row gives me an error:
-->Generic array creation.
If I change it in
Vector<String>[] tmpArr = new Vector<String>[n];
(as I've seen in a pdf by G.Bracha talking aout collections)
it gives me the error:
-->cannot find symbol
-->method add(String)
in the
tmpArr[j].add(str);
row.
The only way it seems to work is
Vector<String>[] tmpArr = new Vector[n];
but it gives me the unchecked conversion warning.
How can I create an array of generics?
Thank you!
MatteoYou can't
Actually, that depends on the exact definition of a generic array. If by generic array someone means "an array comprised of elements defined by a type parameter", there is a solution.
import java.lang.reflect.Array;
public class Something<T> {
private final Class<T> type;
public Something(Class<T> type) {
this.type = type;
public String getTypeName() {
return this.type.getName();
public T[] newArray(final int length) {
return (T[]) Array.newInstance(this.type, length);
}The constructor introduces the type information (T) to the runtime environment, which means an instance of Something will know its type. Method newArray therefore does not cause a warning on unchecked type conversion, so this approach is typesafe.
// Type parameter class is demanded by constructor...
Something<String> stringThing = new Something<String>(String.class);
// Cheating won't work, because the compiler catches the error...
Something<Vector> vectorThing = new Something<Vector>(Integer.class);This approach, however, doesn't enable you to create an array of typed elements (like Vector<String>[]). If that is the definition of a generic array, then it is indeed not possible to create one.
After all, while Vector[].class exists and can be resolved at runtime, there's no such thing as Vector<String>[].class, so there's no way you could provide the class definition of the component type to the constructor of Something.
This may be a surprise to mdt_java, because if I remember correctly, templates in C++ cause actually different classes to be created for 'generic' types. This is not the case with Java.
Maybe you are looking for
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