Sum of values in an array

I want to find the sum of the values I have stored in an irregular array (example: int[index][index2], index is set whereas index2 varies). I want the values in index2 to be added together to find a total for each index. Any suggestions about a repetition statement to write in order to do this?
Any advice is greatlly appreciated.

hey thanks alot, that worked. If it isn't too much trouble, could you briefly explain to me how you utilized the .length function for this two dimensional array. I am familiar with single dimensional .lengths and I kind of see what you did here but I do not fully understand what is going on.

Similar Messages

Finding the smallest value from an array

Hi there :)
I started learning Java a few days ago and have now run into my first problem :p
I am using Netbeans on Mac OS X.
I need to find the smallest value from an array. So far I've had no luck. Any suggestions would be fantastic.
The code so far:
* Math Problems
* Created on May 4, 2007, 10:54 AM
* PROJECT 1: - IN PROGRESS
* Create a program that allows you to create an integer array of 18 elements with the following values
* 3, 2, 4, 5, 6, 4, 5, 7, 3, 2, 3, 4, 7, 1, 2, 0, 0, 0
* - The program computes the sum of elements 0 to 14 and stores it in element 15                              // COMPLETED
* - The program computes the average and stores it in element 16                                              // COMPLETED
* - The program finds the smallest value from the array and stores it in element 17
* PROJECT 2: - TO DO
* Write a program that accepts from the command line and prints them out. Then use a for loop to print
* the next 13 numbers in the sequence where each number is the sum of the previous two. FOR EXAMPLE:
* - input>java prob2 1 3
* - output>1 3 4 7 11 18 29 47 76 123 322 521 843 1364
* PROJECT 3: - TO DO
* Write a program that accepts from the command line two numbers in the range from 1 to 40. It then
* compares these numbers against a single dimension array of five integer elements ranging in value
* from 1 to 40. The program displays the message BINGO if the two inputted values are found in the array
* element. FOR EXAMPLE:
* - input>java prob3 3 29
* - output>Your first number was 3
* -        Your second number was 29
* -        Its Bingo! // This message if 3 and 29 are found in the array
* -        Bokya!      // This message if 3 and 29 are not found in the array
* -        The array was 7 5 25 5 19 30
* PROJECT 3 EXTENSION: - OPTIONAL
* Generate the array of 5 unique integers using random numbers
package mathproblems;
* @author Mohammad Ali
public class Main {
    /** Creates a new instance of Main */
    public Main() {
     * @param args the command line arguments
    public static void main(String[] args) {
        int A[]={3,2,4,5,6,4,5,7,3,2,3,4,7,1,2,0,0,0};
        int O = A.length - 3;
        int B = A[0] + A[1] + A[2] + A[3] + A[4] + A[5] + A[6] + A[7] + A[8] + A[9] + A[10] + A[11] + A[12] + A[13] + A[14];
        A[15] = B; // Stores the sum of the integers in A[15]
        int C = B / O;
        A[16] = C; // Computes and stores the average in A[16]
        int D = 101;
            if (A[0] < A[1]) { D = A[0]; }
            else { D = A[1]; }
            if (A[1] < A[2]) { D = A[1]; }
            else { D = A[2]; }
        System.out.println("There are " + O + " numbers in the Array");
        System.out.println("Those numbers add up to " + B + ".");
        System.out.println("The average of those numbers is " + C + ".");
        System.out.println("The smallest value in the array is " + D + ".");
}The code is incomplete, but it works so far. The problem is I know there must be an easier way. SAVE ME :)

OK :)
Just thought I should show you the output as to help anyone else with the same problem:
* Math Problems
* Created on May 4, 2007, 10:54 AM
* PROJECT 1: - IN PROGRESS
* Create a program that allows you to create an integer array of 18 elements with the following values
* 3, 2, 4, 5, 6, 4, 5, 7, 3, 2, 3, 4, 7, 1, 2, 0, 0, 0
* - The program computes the sum of elements 0 to 14 and stores it in element 15                              // COMPLETED
* - The program computes the average and stores it in element 16                                              // COMPLETED
* - The program finds the smallest value from the array and stores it in element 17                           // COMPLETED
* PROJECT 2: - TO DO
* Write a program that accepts from the command line and prints them out. Then use a for loop to print
* the next 13 numbers in the sequence where each number is the sum of the previous two. FOR EXAMPLE:
* - input>java prob2 1 3
* - output>1 3 4 7 11 18 29 47 76 123 322 521 843 1364
* PROJECT 3: - TO DO
* Write a program that accepts from the command line two numbers in the range from 1 to 40. It then
* compares these numbers against a single dimension array of five integer elements ranging in value
* from 1 to 40. The program displays the message BINGO if the two inputted values are found in the array
* element. FOR EXAMPLE:
* - input>java prob3 3 29
* - output>Your first number was 3
* -        Your second number was 29
* -        Its Bingo! // This message if 3 and 29 are found in the array
* -        Bokya!      // This message if 3 and 29 are not found in the array
* -        The array was 7 5 25 5 19 30
* PROJECT 3 EXTENSION: - OPTIONAL
* Generate the array of 5 unique integers using random numbers
package mathproblems;
* @author Mohammad Ali
import java.util.Arrays;
public class Main {
    /** Creates a new instance of Main */
    public Main() {
     * @param args the command line arguments
     public static void main(String[] args) {
              int A[]={3,2,4,5,6,4,5,7,3,2,3,4,7,1,2,0,0,0};
          Arrays.sort(A);
          System.out.println("The smallest value in the array is " + A[0] + ".");
          int num = A.length;
          System.out.println("There are " + num + " values in the Array.");
          int sum = 0;
          for (int i = 0; i < A.length; i++) {
               sum+=A;
          System.out.println("Those numbers add up to " + sum + ".");
          double d = (double)sum/num;
          System.out.println("The average value of those numbers is " + d + ".");
What Iearned:
1) How to create for loops properly
2) How to import java.util.Arrays ( =D )
3) How to get a more accurate average using double instead of int
4) This forum is the best and has very helpful people 24/7 ( =D)
Thanks Again,
Mo.

How to get the values of an Array using JSP Tags

Hey guys,
I need some help. I've splited a String using
fn:split(String, delim) where String = "1,2,3,4" and delim is ,
This method returns an Array of splited Strings. how do i get the values from this array using jsp tags. I don't wanna put java code to achive that.
Any help would be highly appreciated
Thanks

The JSTL forEach tag.
In fact if all you want to do is iterate over the comma separated list, the forEach tag supports that without having to use the split function.
<c:set var="list" value="1,2,3,4"/>
<c:forEach var="num" items="${list}">
<c:out value="${num}"/>
</c:forEach>The c:forTokens method will let you do this with delimiters other than a comma, but the forEach tag works well just with the comma-delimited string.

Get distinct values from plsql array

Hi,
I have declared a variable as below in plsql proc.
type t_itemid is table of varchar2(10);
inserted set of items in to this using a program
now i want distinct values from that array how can i get it.

I am using 9i so i cannot use set operator and more over my problem is that i am declaring the variable inside the plsql block . when i tried i am getting the below errors:
SQL> r
1 declare
2 type t_type is table of varchar2(10);
3 v_type t_type;
4 begin
5 v_type := t_type('toys','story','good','good','toys','story','dupe','dupe');
6 for i in (select column_value from table(v_type)) loop
7 dbms_output.put_line(i.column_value);
8 end loop;
9* end;
for i in (select column_value from table(v_type)) loop
ERROR at line 6:
ORA-06550: line 6, column 41:
PLS-00642: local collection types not allowed in SQL statements
ORA-06550: line 6, column 35:
PL/SQL: ORA-22905: cannot access rows from a non-nested table item
ORA-06550: line 6, column 10:
PL/SQL: SQL Statement ignored
ORA-06550: line 7, column 22:
PLS-00364: loop index variable 'I' use is invalid
ORA-06550: line 7, column 1:
PL/SQL: Statement ignored

How do I remove NaN values from an array?

I'm trying to test if the values in an array are less than 0.001. All of them are...BUT the problem is that some of the elements in the array are NaN. I'd like to do one of two things:
1. Remove the NaN elements from the array and set them to zero to make the test work.
2. Make the test understand that NaN elements are okay.
The test results in a boolean array of T/F values. If all of the values of the boolean array are T, it will result in a single boolean value of T. In #2, I am saying that I want it to test if an element of the array is less than 0.001 OR equal to NAN.
Solved!
Go to Solution.

Your statements don't make much sense. It's irrelevant how many NaNs are in the array. A sort will move them all to the bottom. You had said you wanted to find out if all the elements in an array are less than 0.001, and that you've got some NaNs in there. Well, this will do that:
twolfe13 wrote:
I did see how to remove NaN once, but couldn't determine a good way to generalize it other than doing a test loop. I thought there might have been a simple function that I overlooked to do this.
As I noted, there have been several posts in the past about efficient techniques for removing certain elements out of an array. Seek, and ye shall find.
Joseph Loo wrote:
Have you look at the coerce function where you can set the lower and upper limit?
That won't do anything for NaN. Or perhaps I misunderstood what you are suggesting to do?
Attachments:
NaN sort.png ‏20 KB
NaN sort small.png ‏5 KB

How can I sum the values in a given column on sheet 1 i.e. A1:A50 based on the adjacent columns specific value i.e. B1:B50 = "Living Room" on sheet 2

How can I sum the values in a given column on sheet 1 i.e. A1:A50 based on the adjacent columns specific value i.e. B1:B50 = “Dinning Room” on sheet 2
For Example:
SHEET 1
A
B
$50
Dinning Room
$800
Dinning Room
$300
Kitchen
$1,000
Master Bedroom
$100
Dinning Room
SHEET 2
Display the total SUM amount of each Project based on Sheet 1
Project Name
Total Cost
Dinning Room
$950
Kitchen
$300

Would be a good idea to open iWork Formulas and Functions User Guide and search for the description of the function named SUMIF
The Guide is available for every user thru the Help menu.
Yvan KOENIG (VALLAURIS, France) jeudi 19 mai 2011 17:32:42
Please :
Search for questions similar to your own before submitting them to the community
To be the AW6 successor, iWork MUST integrate a TRUE DB, not a list organizer !

Using DMA to update values in an array

Good afternoon,
I've been running into a few problems with my vi, and I'd like to give a bit of the background information before I ask my questions. I'm using Labview 8.5 and the NI USB-6009 DAQ. I want to use an encoder to control values that are being written to a file for DMA. I found that I couldn't use the encoder as an external clock since the 6009 DAQ doesn't have this capability. So I've been trying to go a differenet route by using a case structure with a True/false statement to allow me to input values from a simulated signal into a write vi (each time the encoder pulses, a value from the simulated signal should be inputed into the write data storage vi). From there, I want to then read those values and put them into an array. So the plan is to have a 10 element array that reads in values from the storage file (just like in FIFO for FPGA). As I continue reading values, the oldest value of the 10 element array will leave the array and be replaced by a new value.
Now here come the questions, I'm using the Write/Read data storage vi's and I keep getting errors. First, if I'm wanting to use DMA to read these values am I using the correct vi's, or is there a different route? Also, once I read these values into the array how would I be able to constantly update the array in a descending order from begining to end of the stored values?
I'm posting my most recent vi that I've been editing. Also, in advance, thank you!
-tjm
Attachments:
Using Encoder as an analog input 10_9_13 - Copy - Copy.vi ‏390 KB

Thank you for your reply.
First, I'm ultimately trying to use the array as input into a visual display for a meter (to display the mean of the array). I've been successful (in the past) with inputting into an array by not using DMA and using the Sort 1D Array point by point vi. The only problem is the timing mechanism with the encoder, and you are correct with stating that there is uncertainty with the encoder when trying to retrieve values from the input signal (sine wave). I thought about going down the route of using the encoder as a counter (since I am able to see the counter increase by a single digit with each pulse).
My question would then be how to control the case structure with a counter input?
I'm posting both my setup with the Sort 1D Array Point by Point and the simple vi for the encoder as a counter. My idea is to try to merge the two and have the counter control the case structure.
Is there a way I can do this?
Attachments:
Sort 1D Array Pt by Pt.vi ‏189 KB
Using Encoder as a counter input 10_9_13.vi ‏123 KB

Sum the values of a text field in a tabular form using JavaScript

Hi Folks.
OK, I put my hands up. I don't know Java script but I'm picking up the basics and I WANT to learn.
Here's my situation.
I have a tabular form which has lots of Standard Report Columns and ONE text field.
I want to sum the values entered in the text field, real time, using Java Script without the need to have a round trip to the database.
I'm guessing this will involve some kind of loop. Once I have that SUM figure I will store it in a hidden item and it will be used for validation when the user submits the form.
If anyone can give me a simple Java Script to do this, or point me in the direction of one, I'd be very grateful.
Many thanks.
Dogfighter.

Hi Arie.
Thanks for the link.
That's a great start,
What I've got working so far is the following...
<script type="text/javascript">
function f_calculate_delta(p_this,p_rownum)
var amt = $x(p_this).value;
alert (amt);
var display_item_to_set = 'f08_'+ p_rownum
$x(display_item_to_set).innerHTML = amt
</script>
This is working fine.
Where I'm stuck at the moment is how I can 'get' the value of another cell in the same row. They have all been set up using the APEX_ITEM API with their own unique IDs.
I will continue looking but if you could give me a steer, that would be great.
Many thanks
Simon
PS. APEX 3.1
PPS. Trying to get the value of another row using...
var display_item_to_get = 'f04_'+ p_rownum
var expected_amt = $x(display_item_to_get).value
PPPS. Also tried...
var display_item_to_get = 'f04_'+ p_rownum
var expected_amt = $v(display_item_to_get)
and
var display_item_to_get = 'f04_'+ p_rownum
var expected_amt = $v(display_item_to_get).value
None of which are working at the moment.
Message was edited by:
Dogfighter

How to take a field value in an array?

how to take a field value in an array? its urgent........

yaa... i know, but actually we need to multiply that number with some digit.
take it this is way, if i push it into another array, we have an array of digits but what i need is a all digit to be together to be multiplied to a number
for example -
if i push the numbers into new array say arr[];
so i will have something like this. arr[1,2,3,4,5,6.......]
but i need the new varaible should have value as 12345........ all concatenated.
if i perform operation on array each digit will be multiplied individually.
hope u got what m trying to sayy....
Thanks for the prompt response..........

Finding a minimum value in an array without using loops

I can find a minimum value in an array using a loop, but I am unsure of how to do it without any type of of loop
Here is what I have using a loop:
// This method searches for the minimum value in an array
public static int min(int a[]){
int min = a[0];
for(int i = 1; i < a.length; i++){
if(a[i] < min){
min = a;
return min;
How do I covert this to do the same thing, using no loops?
Thank you for replies
Edited by: kazmania on Feb 7, 2008 12:26 PM

public class Test112 {
public int recurse(int[] x, int i, int n)
if (i==x.length-1) { return (x[i] < n) ? x[i] : n; }
n = (n < x[++i]) ? n : x;
return recurse(x, i, n);
public static void main(String[] args) {
int[] nums = {3, 1, 56, 2, 99, 34, 5, 78, -400, 2383, 201, -9, -450};
Test112 t = new Test112();
int min = t.recurse(nums, 0, nums[0]);
System.out.println(min);

Store XML node value into an array with node element name

Hi,
I have the following code that displays the node element with the
corresponding node value. I want to store the values in an array in
reference to the node name.
i.e.
XML (my xml is much bigger than this, 300 elements):
<stock>
<symbol>SUNW</symbol>
<price>17.1</price>
</stock>-----
would store the following:
*data[symbol] = SUNW;*
*data[price] = 17.1;*
Thanks in advance,
Tony
test.jsp
Here's my source code:
<html>
<head>
<title>dom parser</title>
<%@ page import="javax.xml.parsers.*" %>
<%@ page import="org.w3c.dom.*" %>
<%@ page import="dombean.*" %>
</head>
<body bgcolor="#ffffcc">
<center>
<h3>Pathways Info</h3>
<table border="2" width="50%">
<jsp:useBean id="domparser" class="dombean.MyDomParserBean" />
<%
Document doc = domparser.getDocument("c:/stocks/stocks.xml");
traverseTree(doc, out);
%>
<%! private void traverseTree(Node node,JspWriter out) throws Exception {
if(node == null) {
return;
int type = node.getNodeType();
switch (type) {
// handle document nodes
case Node.DOCUMENT_NODE: {
out.println("<tr>");
traverseTree
(((Document)node).getDocumentElement(),
out);
break;
// handle element nodes
case Node.ELEMENT_NODE: {
String elementName = node.getNodeName();
//if(elementName.equals("MOTHER-OCC-YRS-PREVIOUS")) {
//out.println("</tr>");
out.println("<tr><td>"+elementName+"</td>");
NodeList childNodes =
node.getChildNodes();
if(childNodes != null) {
int length = childNodes.getLength();
for (int loopIndex = 0; loopIndex <
length ; loopIndex++)
traverseTree
(childNodes.item(loopIndex),out);
break;
// handle text nodes
case Node.TEXT_NODE: {
String data = node.getNodeValue().trim();
//if((data.indexOf("\n") <0) && (data.length() > 0)) {
out.println("<td>"+data+"</td></tr>");
%>
</table>
</body>
</html>
{code}
*MyDomParserBean.java*
Code: package dombean;
{code:java}
import javax.xml.parsers.*;
import org.w3c.dom.*;
import java.io.*;
public class MyDomParserBean
implements java.io.Serializable {
public MyDomParserBean() {
public static Document
getDocument(String file) throws Exception {
// Step 1: create a DocumentBuilderFactory
DocumentBuilderFactory dbf =
DocumentBuilderFactory.newInstance();
// Step 2: create a DocumentBuilder
DocumentBuilder db = dbf.newDocumentBuilder();
// Step 3: parse the input file to get a Document object
Document doc = db.parse(new File(file));
return doc;
{code}
Edited by: ynotlim333 on Sep 24, 2007 8:41 PM
Edited by: ynotlim333 on Sep 24, 2007 8:44 PM
Edited by: ynotlim333 on Sep 24, 2007 8:45 PM

I still need to store it in an array because its 300 elements in the XML stocks.
I've done the following but its not working, i'm getting error codes. I think its an easy fix. I'd also like to pass a String instead of a .xml document b/c my xml is stored inside a DB. Any suggestions on that?
<html>
<head>
<title>dom parser</title>
<%@ page import="javax.xml.parsers.*" %>
<%@ page import="org.w3c.dom.*" %>
<%@ page import="org.*" %>
</head>
<body bgcolor="#ffffcc">
<center>
<h3>Pathways Info</h3>
<table border="2" width="50%">
<jsp:useBean id="domparser" class="org.MyDomParserBean" />
<%
Document doc = domparser.getDocument("c:/stocks/stocks.xml");
traverseTree(doc, out);
%>
<%!
        public String element_store = null;
        public String[] stock_data = new String[400];
        private void traverseTree(Node node,JspWriter out) throws Exception {
        if(node == null) {
           return;
        int type = node.getNodeType();
        switch (type) {
           // handle document nodes
           case Node.DOCUMENT_NODE: {
             out.println("<tr>");
             traverseTree
             (((Document)node).getDocumentElement(),
             out);
             break;
          // handle element nodes
          case Node.ELEMENT_NODE: {
            String elementName = node.getNodeName();
            element_store = elementName;
             //if(elementName.equals("MOTHER-OCC-YRS-PREVIOUS")) {
               //out.println("</tr>");
             NodeList childNodes =
             node.getChildNodes();
             if(childNodes != null) {
                int length = childNodes.getLength();
                for (int loopIndex = 0; loopIndex <
                length ; loopIndex++)
                   traverseTree
                   (childNodes.item(loopIndex),out);
              break;
           // handle text nodes
           case Node.TEXT_NODE: {
              String data = node.getNodeValue().trim();
              if((data.indexOf("\n") <0) && (data.length() > 0)) {
              out.println("<tr><td>"+element_store+"</td>");
              out.println("<td>"+data+"</td></tr>");
              stock_data[element_store]=data;
%>
</table>
</body>
</html>

Assigning a value to an array cell populated [BULK]

Hi all,
I've got a problem in assigning a value to an array populated with BULK COLLECT INTO .
I can reproduce the problem with this
CREATE TABLE TEST_TABLE (
value1 NUMBER,
value2 NUMBER
INSERT INTO test_table VALUES(1,1);
INSERT INTO test_table VALUES(1,1);
INSERT INTO test_table VALUES(1,1);
INSERT INTO test_table VALUES(1,1);
INSERT INTO test_table VALUES(1,1);
INSERT INTO test_table VALUES(1,1);
INSERT INTO test_table VALUES(1,1);
INSERT INTO test_table VALUES(1,1);
INSERT INTO test_table VALUES(1,1);
INSERT INTO test_table VALUES(1,1);And this is the PL/SQL anonymous block that gives me problems:
DECLARE
SUBTYPE t_rec IS TEST_TABLE%ROWTYPE;
TYPE records_table IS TABLE OF t_rec;
elist RECORDS_TABLE;
CURSOR table_cursor IS SELECT * FROM TEST_TABLE WHERE rownum <= 20;
BEGIN
OPEN table_cursor;
FETCH table_cursor BULK COLLECT INTO elist;
    FOR j IN 1..elist.COUNT
    LOOP
      elist(j)(1) := elist(j)(1) +1;
    END LOOP;
CLOSE table_cursor;
END; The error is
ORA-06550: line 13, column 7:
PLS-00308: this construct is not allowed as the origin of an assignment
ORA-06550: line 13, column 7:
PL/SQL: Statement ignored
06550. 00000 - "line %s, column %s:\n%s"
*Cause:    Usually a PL/SQL compilation error.
*Action:So it doesn't compile because of this line of code:
elist(j)(1) := elist(j)(1) +1;
Why doesn't it work?
If I try to do this, works perfectly:
DECLARE
TYPE v_num_table
IS
TABLE OF NUMBER;
TYPE v_2_num_table
IS
TABLE OF v_num_table;
v_nums V_2_NUM_TABLE := V_2_NUM_TABLE();
BEGIN
v_nums.EXTEND;
v_nums(1) := v_num_table();
v_nums(1).EXTEND;
v_nums(1)(1) := 1;
v_nums(1)(1) := v_nums(1)(1) +1;
dbms_output.put_line(v_nums(1)(1) );
END;Edited by: user10396517 on 2-mar-2012 2.35

Variable "elist" is a collection of record, so you access an individual field of a given collection element by specifying the field name, not its position :
DECLARE
SUBTYPE t_rec IS TEST_TABLE%ROWTYPE;
TYPE records_table IS TABLE OF t_rec;
elist RECORDS_TABLE;
CURSOR table_cursor IS SELECT * FROM TEST_TABLE WHERE rownum <= 20;
BEGIN
OPEN table_cursor;
FETCH table_cursor BULK COLLECT INTO elist;
    FOR j IN 1..elist.COUNT
    LOOP
      elist(j).value1 := elist(j).value1 + 1;
    END LOOP;
CLOSE table_cursor;
END;Your second example is different as you're dealing with a collection of collections.

Problem in assigning value to an array element

hi all
in the following prog i am not able to assign the value to the array element
i am not getting why it is giving me error
//my program is as follows
public class ArrayTest
     static int [] intArray = new int[5];
     static int [] intArray1 = new int[1];
     intArray1[0] = 5; // this line gives error
     static char [] charArray = new char[5];
     public static void main(String args[])
          System.out.println(charArray);
          intArray1 = intArray;
}thanx in advance as usual

The problem is that you try to execute code outside a method. This can be only done in form of a variable declaration or as a static initilization block which will be executed once when the class is loaded:public class ArrayTest
     static int [] intArray = new int[5];
     static int [] intArray1 = new int[1];
     static char [] charArray = new char[5];
     static {
          intArray[0] = 5;
     public static void main(String args[])
          System.out.println(charArray);
          intArray1 = intArray;
}

How to insert values into an array of class

Hello everyone,
I need help in inserting values into an array of class, which i have read from a file.
Length of the array is 5. I should insert values one by one into that array.
If the array is full (if count = 5), then I should split the array into 2 arrays
and adjust the values to left and right with median.
I'm getting an ArrayBoundException .. can anybody help me out ?
Thanks in advance
Here is my code..........
import java.util.*;
import java.io.*;
public class Tree
     static String second;
     static String first;
     static int count = 5;
     public void insert(int f1,int s1, int c)
          if(c!=0)
               Record[] rec = new Record[4];
               for (int i = 0; i < 5; i++)
                      rec[i] = new Record();
               for(int i = 0; i<=4;i++)
                    rec.x = f1;
                    rec[i].y = s1;
          else
               System.out.println("yes");
     public static void main(String[] args)
          Tree t = new Tree();
          try
               FileReader fr = new FileReader("output.txt");           // open file
               BufferedReader br = new BufferedReader(fr);
               String s;
               while((s = br.readLine()) != null)
                    StringTokenizer st = new StringTokenizer(s);
                    while(st.hasMoreTokens())
                         first = st.nextToken();
                         second = st.nextToken();
                    //     System.out.println("First-->"+first+" "+"Second-->"+second);
                    int fir = Integer.parseInt(first);
                    int sec = Integer.parseInt(second);
                    t.insert(fir, sec, count);
               fr.close(); // close file
          catch (IOException e)
System.out.println("Can't read file");
class Record
     public int x,y;

Hi qwedwe.
Record[] rec = new Record[4];
               for (int i = 0; i < 5; i++)
                      rec[i] = new Record();
                 }Here is your error: you have an array of 4 Records, but you create and (try to) insert 5 Record-instances.... try:
Record[] rec = new Record[c];
               for (int i = 0; i < c; i++)
                      rec[i] = new Record();
                 }Regards,
Norman

Need to store values in an array from a file

My input file is a series of float numbers in a single line. I need to copy these values and store them in an array. Likewise i need to write these files stored in the array to a new file. can someone help me with the code.
My data is something like this.
0.000000000000000E+00 -9.983341664682815E-02 -1.986693307950612E-01 -2.955202066613396E-01 -3.894183423086505E-01 -4.794255386042030E-01 -5.646424733950355E-01 -6.442176872376911E-01 -7.173560908995228E-01 -7.833269096274834E-01 -8.414709848078965E-01 -8.912073600614354E-01 -9.320390859672264E-01 -9.635581854171930E-01 -9.854497299884603E-01 -9.974949866040544E-01 -9.995736030415051E-01 -9.916648104524686E-01 -9.738476308781951E-01 -9.463000876874145E-01 -9.092974268256817E-01 -8.632093666488737E-01 -8.084964038195901E-01 -7.457052121767200E-01 -6.754631805511506E-01 -5.984721441039565E-01 -5.155013718214642E-01 -4.273798802338298E-01 -3.349881501559047E-01 -2.392493292139820E-01 -1.411200080598672E-01 -4.158066243329049E-02 5.837414342758009E-02 1.577456941432487E-01 2.555411020268317E-01 3.507832276896198E-01 4.425204432948525E-01 5.298361409084934E-01 6.118578909427193E-01 6.877661591839741E-01 7.568024953079282E-01 8.182771110644108E-01 8.715757724135882E-01 9.161659367494549E-01 9.516020738895160E-01 9.775301176650970E-01 9.936910036334645E-01 9.999232575641008E-01 9.961646088358406E-01 9.824526126243325E-01 9.589242746631385E-01 9.258146823277321E-01 8.834546557201531E-01 8.322674422239008E-01 7.727644875559871E-01 7.055403255703919E-01 6.312666378723208E-01 5.506855425976376E-01 4.646021794137566E-01 3.738766648302360E-01 2.794154981989259E-01 1.821625042720950E-01 8.308940281749640E-02

ram.west wrote:
hi,
i tried using string tokenizer, but i need to pass the values as float values to the array..The recommendation for StringTokenizer was a mistake. You could use split instead. Or a Scanner.
At any rate so you have some Strings. Which you want to turn into floats.
If only Java had a class, I don't know, let's call it java.lang.Float, and if only such a class existed wouldn't it be just brilliant if it had some sort of method that could parse a float primitive out of a given String?
I mean wouldn't that be just amazing ?

Sum of values in an array

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