How to make program control switch between 2 computers
Hi all,
I Am a student, I have a question.
I want to write a networking program which should run on 2 computers by switching once for every 5 seconds. That is, the program should run on a computer for 5 seconds and the same control should be executed on some other computer. The program(which keeps switching between the 2 computers ) keeps sending and receiving some information to the 3rd computer all the time using UDP.
Can some one help me the steps or idea in coding this program .
Thank you,
Ravi
You should take a look at http://www.greenteatech.com/, particularly the GT Native Execution Tool
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d.import java.io.*;
import java.util.*;
Mobile ID Classification Program - 2003
Currently known memory bugs -
15/10/03 - JVM reports OutOfMemoryError when gsm_data.txt used as input
public class DataAnalysis {
/* Data structures used to store values **/
private Hashtable Activity = null;
private Vector table1 = null;
private Vector table2 = null;
private Vector table3 = null;
private BufferedReader fin;
private StringTokenizer st;
Mobile activity description strings
private final String A1 = "IMSI attach";
private final String A2 = "IMSI detach";
private final String A3 = "Periodic location update";
private final String A4 = "Normal location update+authentication";
private final String A5 = "Service request mobile call";
private final String A6 = "Service request SMS";
private final String A7 = "Service request supplementary service activation";
private final String A8 = "paging response";
// private final String A8a = "Paging response+authentication";
private final String A9 = "Service request energy";
/* main function where the program begins execution **/
public static void main(String args[]) {
if(args.length == 0) {
System.out.println("File name not specified. Usage : java -Xmx500mb DataAnalysis <file name> ");
else if(args.length > 1) {
System.out.println("Too many parameters. Usage : java -Xmx500mb DataAnalysis <file name> ");
else {
new DataAnalysis(args[0]);
/* Constructor. Takes input file name string as parameter **/
public DataAnalysis(String data_file_name) {
Activity = new Hashtable();
table1 = new Vector();
table2 = new Vector();
table3 = new Vector();
// Parse the input file. Read in lines.
try{
fin= new BufferedReader(new FileReader(data_file_name));
String line;
while((line = fin.readLine()) != null) {
if (line.trim().length() > 0) {
tokenize(line);
catch(Exception e) {
System.out.println(e.getMessage());
finally {
try {
fin.close(); // Close the file input stream then
catch(Exception ee) {
// Create the first two tables
createTable1();
createTable2();
// Free the memory occupied by table 1
// freeTable(table1);
table1 = null;
createTable3();
// Free the memory occupied by table 2
// freeTable(table2);
table2 = null;
// Select all the mobile ids in gsm_data.txt which have a city block distance value less than 0.25 threshold (upper limit)
System.out.println("--------------------------Table 3 : Relationship between mobile ids using Manhattan City Block distance -------------------------- \n" );
for(int ni =0;ni<table3.size();ni++) {
Vector inner_vec = (Vector) table3.elementAt(ni);
for(int nj = 0;nj<(inner_vec.size()-1);nj= nj+2) {
float val = ((Float) inner_vec.elementAt(nj)).floatValue();
if(val <= 0.25 && val > 0.0) {
System.out.println((String) inner_vec.elementAt(nj+1));
/* Returns the index from table 1 **/
public int getIndexFromTable1(String id) {
int index = -1;
for(int ni = 0;ni<table1.size();ni++) {
Vector v = (Vector) table1.elementAt(ni);
String vect_id = (String) v.elementAt(0);
if(vect_id.equalsIgnoreCase(id)) {
index = ni;
return index;
Create table with actual frequency of mobile activity for each mobile id.
Number of times an activity occurred in the input file.
public void createTable1() {
Enumeration e = Activity.keys();
int sum;
while(e.hasMoreElements()) {
Vector table1_row = null;
String s = (String) e.nextElement();
Integer num = (Integer) Activity.get(s);
StringTokenizer st1 = new StringTokenizer(s, "|");
String mobile_id = (String) st1.nextToken();
String mobile_act = (String) st1.nextToken();
int row_index = getIndexFromTable1(mobile_id);
if(row_index > 0) {
table1_row = (Vector) table1.elementAt(row_index);
sum = ((Integer) table1_row.lastElement()).intValue();
else {
table1_row = new Vector();
sum = 0;
if(table1_row.contains(mobile_id)) {
if(mobile_act.equalsIgnoreCase(A1)) { // IMSI attach activity
table1_row.setElementAt(num, 1);
sum += num.intValue();
else if(mobile_act.equalsIgnoreCase(A2)) { // IMSI detach activity
table1_row.setElementAt(num, 2);
sum += num.intValue();
else if(mobile_act.equalsIgnoreCase(A3)) { // Periodic location update activity
table1_row.setElementAt(num, 3);
sum += num.intValue();
else if(mobile_act.equalsIgnoreCase(A4)) { // Normal location update+authentication activity
table1_row.setElementAt(num, 4);
sum += num.intValue();
else if(mobile_act.equalsIgnoreCase(A5)) { // Service request mobile call activity
table1_row.setElementAt(num, 5);
sum += num.intValue();
else if(mobile_act.equalsIgnoreCase(A6)) { // Service request SMS activity
table1_row.setElementAt(num, 6);
sum += num.intValue();
else if(mobile_act.equalsIgnoreCase(A7)) { // Service request supplementary service activation activity
table1_row.setElementAt(num, 7);
sum += num.intValue();
else if(mobile_act.equalsIgnoreCase(A8)) { // Paging response activity
table1_row.setElementAt(num, 8);
sum += num.intValue();
else if(mobile_act.equalsIgnoreCase(A9)) { // Service request energy activity
table1_row.setElementAt(num, 9);
sum += num.intValue();
int lastIndex = table1_row.lastIndexOf(table1_row.lastElement()); // This is the last index which this table
table1_row.setElementAt(new Integer(sum), lastIndex);
else {
table1_row.addElement(mobile_id);
if(mobile_act.equalsIgnoreCase(A1)) {
table1_row.addElement(num);
sum += num.intValue();
else {
table1_row.addElement(new Integer("0"));
if(mobile_act.equalsIgnoreCase(A2)) {
table1_row.addElement(num);
sum += num.intValue();
else {
table1_row.addElement(new Integer("0"));
if(mobile_act.equalsIgnoreCase(A3)) {
table1_row.addElement(num);
sum += num.intValue();
else {
table1_row.addElement(new Integer("0"));
if(mobile_act.equalsIgnoreCase(A4)) {
table1_row.addElement(num);
sum += num.intValue();
else {
table1_row.addElement(new Integer("0"));
if(mobile_act.equalsIgnoreCase(A5)) {
table1_row.addElement(num);
sum += num.intValue();
else {
table1_row.addElement(new Integer("0"));
if(mobile_act.equalsIgnoreCase(A6)) {
table1_row.addElement(num);
sum += num.intValue();
else {
table1_row.addElement(new Integer("0"));
if(mobile_act.equalsIgnoreCase(A7)) {
table1_row.addElement(num);
sum += num.intValue();
else {
table1_row.addElement(new Integer("0"));
if(mobile_act.equalsIgnoreCase(A8)) {
table1_row.addElement(num);
sum += num.intValue();
else {
table1_row.addElement(new Integer("0"));
if(mobile_act.equalsIgnoreCase(A9)) {
table1_row.addElement(num);
sum += num.intValue();
else {
table1_row.addElement(new Integer("0"));
table1_row.addElement(new Integer(sum));
if(row_index > 0){
// Replace the vector in table1 with updated vector
table1.remove(row_index);
table1.insertElementAt(table1_row, row_index);
else {
// Add the row vector to the table vector as a row.
table1.addElement(table1_row);
tableToString(table1, "--------------------------Table 1: Number of times activity occurred in input txt file -------------------------- " );
Create table 2 by normalising the data values from table 1
public void createTable2() {
for(int ni = 0;ni<table1.size();ni++) {
int sum;
String name = "";
Vector table2_row = new Vector();
Vector table1_row = (Vector) table1.elementAt(ni);
// For each record of table 1
for(int nj = 0;nj<table1_row.size();nj++) {
sum = ((Integer) table1_row.lastElement()).intValue();
// Name of the activity
if(nj == 0) {
name = (String) table1_row.elementAt(nj);
table2_row.addElement(table1_row.elementAt(nj));
else if (nj == (table1_row.size() - 1)) {
// Don't do any thing, we dont want the sum of activities in table 2 !
else {
Integer num = (Integer) table1_row.elementAt(nj);
int num_val = num.intValue();
if(num_val == 0) {
table2_row.addElement(new Float("0.0"));
else {
if(sum > 0.0) {
table2_row.addElement(new Float((float)num_val/sum));
else {
table2_row.addElement(new Float("0.0"));
table2.addElement(table2_row);
tableToString(table2, "--------------------------Table 2: Table 1's Normalised Values --------------------------");
Create table 3 by comparing the relationship between vectors of table 2 using
the Manhattan City Block distance.
public void createTable3() {
Vector reference_vec = null;
for(int ni = 0;ni<table2.size();ni++) {
reference_vec = (Vector)table2.elementAt(ni);
createTable3Record(reference_vec);
/* public void createTable3Record(Vector reference_vec) {
// Vector table3_record = new Vector();
Table3Record table3_record = new Table3Record();
for(int ni = 0;ni<table2.size();ni++) {
float sum = 0;
// String name = "";
Vector v = (Vector) table2.elementAt(ni); // each record of table2
for(int nj = 0;nj<v.size();nj++) { // for each element of a record of table 2. Iterate through table 2.
if (nj == 0) {
// name = ((String) v.elementAt(nj))+"\t"+((String) reference_vec.elementAt(nj));
table3_record.name_prefix = (String) v.elementAt(nj);
table3_record.name_suffix = (String) reference_vec.elementAt(nj);
// table3_record.value = sum;
else {
float f1 = ((Float) v.elementAt(nj)).floatValue();
float f2 = ((Float) reference_vec.elementAt(nj)).floatValue();
sum += Math.abs(f1-f2);
table3_record.value = sum;
// table3_record.addElement(new Float(table3_record.value)); // Value
// table3_record.addElement(table3_record.name); // Vector Names for that value
table3.addElement(table3_record);
// table3_record = null;
OLD CODE BUT AT LEAST IT WORKS !! // Creates a record for the third table // OLD CODE BUT IT WORKS
public void createTable3Record(Vector reference_vec) {
Vector table3_record = new Vector();
for(int ni = 0;ni<table2.size();ni++) {
float sum = 0;
String name = "";
Vector v = (Vector) table2.elementAt(ni); // each record of table2
for(int nj = 0;nj<v.size();nj++) { // for each element of a record of table 2. Iterate through table 2.
if (nj == 0) {
name = ((String) v.elementAt(nj))+"\t"+((String) reference_vec.elementAt(nj)); /** MEMORY BUG ? */
//name = new StringBuffer().append((String) v.elementAt(nj)).append("\t").append((String) reference_vec.elementAt(nj)).toString();
else {
float f1 = ((Float) v.elementAt(nj)).floatValue();
float f2 = ((Float) reference_vec.elementAt(nj)).floatValue();
sum += Math.abs(f1-f2); // Calculate the sum
table3_record.addElement(new Float(sum)); // Value
table3_record.addElement(name); // Vector Names for that value
table3.addElement(table3_record);
table3_record = null;
Method which breaks the contents of the file which is read into memory for processing
public void tokenize(String s) {
st = new StringTokenizer(s, "\t");
String id = "";
// String time = "";
String activity = "";
if(st.hasMoreTokens()) {
st.nextToken(); // Date e.g. 13052003
// time = st.nextToken(); // Time e.g. 11:30:18
st.nextToken();
st.nextToken(); // Frame Number e.g. 166827
id = st.nextToken().trim(); // ID e.g. f47c12cffb or 2943012109009630
st.nextToken(); // Classmark e.g 33
st.nextToken(); // Float e.g. 2.2 (the distance from base station)
activity = st.nextToken().trim(); // Activity e.g IMSI attach
String key = id+"|"+activity;
key = key.intern();
if (Activity.containsKey(key)) {
Integer num = (Integer) Activity.get(key);
int num_val = num.intValue();
num_val += 1;
num = new Integer(num_val);
Activity.put(key, num);
else {
Activity.put(key, new Integer(1)); // Insert key into our Hashtable
Frees the memory used by a table
public void freeTable(Vector table) {
for (int ni = 0;ni<table.size();ni++) {
Vector inner = (Vector) table.elementAt(ni);
inner = null;
table = null;
Convert a vector to a string suitable for displaying on console output
public void tableToString(Vector table, String table_name){
System.out.println(table_name + "\n");
for (Iterator it = table.iterator(); it.hasNext();) {
System.out.println(it.next());
Function which sepearates mobile id usage beween day/night usage.
public void calculateTimeInterval(String t1, String t2){
// t' = t1 - t2
// Look at all the ids
Date d1,d2;
d1 = new Date(t1);
d2 = new Date(t2);
// TBD
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How to reset data when switching between two subforms
I have two subforms that are either shown or hidden based on a radio button selection.
If Radio Button "1" is selected, subform1 is visible and subform2 is hidden and vice-versa.
This is hard for me to explain, so please bear with me.
What I want to do is to clear the subform fields if you switch back and forth between subforms.
For example:
1. Click Button "1" (subform1 visible)
2. Fill in subform1 fields.
3. Click Button "2" (subform1 now hidden)
4. Click Button "1" (subform1 is visible and fields are blank)
I found the below script in another post for a similar problem. I put it as a "click" event for each Radio Button Item, but I'm not sure where it's supposed to go as the other post didn't say. It works but it clears the entire form, not just the subform fields.
xfa.host.resetData("xfa.form.form1.subform1");
Can anyone tell me the proper script to make my form work?
Please keep it simple. The extent of my JavaScript knowledge is basically cut and past and hope it works. If it does work, it's by the grace of God only. I couldn't tell you the difference between a SOM and an node.
So, if anyone has an answer, please dumb it down to about the level of a third grader.Paul,
Thanks for responding.
I'm still confused as to which field the script goes in and how to enter it in relationship to any existing script.
Instead of me trying to explain verbally, I'll show you what I have.
Document Hierarchy:
Subform path & script: (I'm assuming I need one for each subform)
xfa.host.resetData("xfa.form1.Page1.subform1");
xfa.host.resetData("xfa.form1.Page1.subform2");
"Radio Button List" Click Event script that shows/hides subforms:
form1.Page1.FLOC.RadioButtonList::click - (JavaScript, client)
if (this.rawValue == 1)
Subform1.presence = "visible";
Subform2.presence = "hidden";
else if (this.rawValue == 2)
Subform2.presence = "visible";
Subform1.presence = "hidden";
if (this.rawValue == 1)
Efficiency.presence = "visible";
if (this.rawValue == 2)
Efficiency.presence = "visible";
I've tried putting the script inside the curly brackets, outside the curly brackets, at various locations within the above script, but no matter where I put it, it clears the entire form.
Would you be so kind as to re-write the above script properly so I can see what it's supposed to look like.
Thanks!
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