Writing values to files
While writing float values to file, it is written as junk characters. Can someone tell me how to write float values into a textfile. If possible give the example code.Please help me out of it.
Hi saravanak8!
You must to format the float values so try this way:
import java.text.DecimalFormat;
DecimalFormat nb = new DecimalFormat("0.000;(-0.000)");
String valueStr = nb.format( anyFloatValue );
/* process string as needed */
Best Regards.
Similar Messages
-
Writing output to file does not work
Hello All,
I have a problem with writing to a file created on the command prompt:
1) my base class is called TestRandom2
2) I have a method called run which runs the print method
3) I passed a reference of the run method into the main below, I don't know if I'm doing it correctly but the error message I'm getting "cannot resolve variable symbol : variable String
location: class TestRandom2 return String;"
4)When I declare the method run as void it's also giving an error.
5)I would to fix this proble to write my output to a .xls file. Can someone help me as soon as possible please!!!!
public static void main(String[] args) throws Exception {
TestRandom2 testrandom = new TestRandom2();
byte b[] = new String(testrandom.run()).getBytes();
OutputStream o = new FileOutputStream(args[0]);
o.write(b);
o.close();
}this is my entire file, I want to be able to call the run method in main and have the file out put to an xls file can some one help me please
Code ------
import java.io.*;
public class TestRandom2{
Deck deck = new Deck();
public TestRandom2(){
deck.populate();
public void run(String file){
if(file.equals("") || file==null)
throws IOException {
FileOutputStream output=new FileOutputStream(file);
for(int i=0; i<5; i++){
deck.shuffle();
deck.print();
output.close;
class Deck{
public void populate(){
System.out.println("populating deck!");
cards=new Integer[52];
for(int i=0;i<52;i++){
cards= new Integer(i+1);
public void shuffle(){
System.out.println("Shuffling deck!");
rnd.setSeed(randomseed.getSeed());
java.util.List list = java.util.Arrays.asList(cards);
java.util.Collections.shuffle(list,rnd);
cards = (Integer[])list.toArray(new Integer[0]);
public void print(){
System.out.println("populating deck!");
for(int i=0;i<cards.length;i++){
System.out.print("P:"+(i+1));
System.out.print("C:"+cards[i].intValue());
Integer[] cards = null;
RandomSeed randomseed = new RandomSeed();
java.util.Random rnd = new java.util.Random();
class RandomSeed {
private long[] seeds = new long[] {
9876, 54321,
1299961164, 253987020,
669708517, 2079157264,
190904760, 417696270,
1289741558, 1376336092,
1803730167, 324952955,
489854550, 582847132,
1348037628, 1661577989,
350557787, 1155446919,
591502945, 634133404,
1901084678, 862916278,
1988640932, 1785523494,
1873836227, 508007031,
1146416592, 967585720,
1837193353, 1522927634,
38219936, 921609208,
349152748, 112892610,
744459040, 1735807920,
1983990104, 728277902,
309164507, 2126677523,
362993787, 1897782044,
556776976, 462072869,
1584900822, 2019394912,
1249892722, 791083656,
1686600998, 1983731097,
1127381380, 198976625,
1999420861, 1810452455,
1972906041, 664182577,
84636481, 1291886301,
1186362995, 954388413,
2141621785, 61738584,
1969581251, 1557880415,
1150606439, 136325185,
95187861, 1592224108,
940517655, 1629971798,
215350428, 922659102,
786161212, 1121345074,
1450830056, 1922787776,
1696578057, 2025150487,
1803414346, 1851324780,
1017898585, 1452594263,
1184497978, 82122239,
633338765, 1829684974,
430889421, 230039326,
492544653, 76320266,
389386975, 1314148944,
1720322786, 709120323,
1868768216, 1992898523,
443210610, 811117710,
1191938868, 1548484733,
616890172, 159787986,
935835339, 1231440405,
1058009367, 1527613300,
1463148129, 1970575097,
1795336935, 434768675,
274019517, 605098487,
483689317, 217146977,
2070804364, 340596558,
930226308, 1602100969,
989324440, 801809442,
410606853, 1893139948,
1583588576, 1219225407,
2102034391, 1394921405,
2005037790, 2031006861,
1244218766, 923231061,
49312790, 775496649,
721012176, 321339902,
1719909107, 1865748178,
1156177430, 1257110891,
307561322, 1918244397,
906041433, 360476981,
1591375755, 268492659,
461522398, 227343256,
2145930725, 2020665454,
1938419274, 1331283701,
174405412, 524140103,
494343653, 18063908,
1025534808, 181709577,
2048959776, 1913665637,
950636517, 794796256,
1828843197, 1335757744,
211109723, 983900607,
825474095, 1046009991,
374915657, 381856628,
1241296328, 698149463,
1260624655, 1024538273,
900676210, 1628865823,
697951025, 500570753,
1007920268, 1708398558,
264596520, 624727803,
1977924811, 674673241,
1440257718, 271184151,
1928778847, 993535203,
1307807366, 1801502463,
1498732610, 300876954,
1617712402, 1574250679,
1261800762, 1556667280,
949929273, 560721070,
1766170474, 1953522912,
1849939248, 19435166,
887262858, 1219627824,
483086133, 603728993,
1330541052, 1582596025,
1850591475, 723593133,
1431775678, 1558439000,
922493739, 1356554404,
1058517206, 948567762,
709067283, 1350890215,
1044787723, 2144304941,
999707003, 513837520,
2140038663, 1850568788,
1803100150, 127574047,
867445693, 1149173981,
408583729, 914837991,
1166715497, 602315845,
430738528, 1743308384,
1388022681, 1760110496,
1664028066, 654300326,
1767741172, 1338181197,
1625723550, 1742482745,
464486085, 1507852127,
754082421, 1187454014,
1315342834, 425995190,
960416608, 2004255418,
1262630671, 671761697,
59809238, 103525918,
1205644919, 2107823293,
1615183160, 1152411412,
1024474681, 2118672937,
1703877649, 1235091369,
1821417852, 1098463802,
1738806466, 1529062843,
620780646, 1654833544,
1070174101, 795158254,
658537995, 1693620426,
2055317555, 508053916,
1647371686, 1282395762,
29067379, 409683067,
1763495989, 1917939635,
1602690753, 810926582,
885787576, 513818500,
1853512561, 1195205756,
1798585498, 1970460256,
1819261032, 1306536501,
1133245275, 37901,
689459799, 1334389069,
1730609912, 1854586207,
1556832175, 1228729041,
251375753, 683687209,
2083946182, 1763106152,
2142981854, 1365385561,
763711891, 1735754548,
1581256466, 173689858,
2121337132, 1247108250,
1004003636, 891894307,
569816524, 358675254,
626626425, 116062841,
632086003, 861268491,
1008211580, 779404957,
1134217766, 1766838261,
1423829292, 1706666192,
942037869, 1549358884,
1959429535, 480779114,
778311037, 1940360875,
1531372185, 2009078158,
241935492, 1050047003,
272453504, 1870883868,
390441332, 1057903098,
1230238834, 1548117688,
1242956379, 1217296445,
515648357, 1675011378,
364477932, 355212934,
2096008713, 1570161804,
1409752526, 214033983,
1288158292, 1760636178,
407562666, 1265144848,
1071056491, 1582316946,
1014143949, 911406955,
203080461, 809380052,
125647866, 1705464126,
2015685843, 599230667,
1425476020, 668203729,
1673735652, 567931803,
1714199325, 181737617,
1389137652, 678147926,
288547803, 435433694,
200159281, 654399753,
1580828223, 1298308945,
1832286107, 169991953,
182557704, 1046541065,
1688025575, 1248944426,
1508287706, 1220577001,
36721212, 1377275347,
1968679856, 1675229747,
279109231, 1835333261,
1358617667, 1416978076,
740626186, 2103913602,
1882655908, 251341858,
648016670, 1459615287,
780255321, 154906988,
857296483, 203375965,
1631676846, 681204578,
1906971307, 1623728832,
1541899600, 1168449797,
1267051693, 1020078717,
1998673940, 1298394942,
1914117058, 1381290704,
426068513, 1381618498,
139365577, 1598767734,
2129910384, 952266588,
661788054, 19661356,
1104640222, 240506063,
356133630, 1676634527,
242242374, 1863206182,
957935844, 1490681416 };
public void longToLong(){
for (int i=0;i<(seeds.length);i++){
seedsArray[i] = new java.lang.Long(seeds[i]);
public boolean checkForSeed(long seed){
for(int i=0;i<lastSeed.length;i++){
if (seed == lastSeed[i])
return true;
addSeed(seed);
return false;
public void addSeed(long seed){
if (!(currentseedpos < maxSeeds))
currentseedpos = 0;
lastSeed[currentseedpos] = seed;
public boolean checkForValue(int value){
for(int i=0;i<lastValue.length;i++){
if (value == lastValue[i])
return true;
addValue(value);
return false;
public void addValue(int value){
if (!(currentvaluepos < maxValues))
currentvaluepos = 0;
lastValue[currentvaluepos] = value;
public RandomSeed(){
lastValue = new int[maxValues];
lastSeed = new long[maxSeeds];
longToLong();
shuffle();
public RandomSeed(int v){
maxValues = v;
lastValue = new int[maxValues];
lastSeed = new long[maxSeeds];
longToLong();
shuffle();
public RandomSeed(int v, int s){
maxValues = v;
maxSeeds = s;
lastValue = new int[maxValues];
lastSeed = new long[maxSeeds];
longToLong();
shuffle();
public void shuffle(){
random.setSeed(seeds[random.nextInt(seeds.length-1)]);
java.util.List list = java.util.Arrays.asList(seedsArray);
java.util.Collections.shuffle(list,random);
public long getSeed(){
shuffle();
random.setSeed(seeds[random.nextInt(seeds.length-1)]);
long seed=seedsArray[random.nextInt(seeds.length-1)].longValue();
while (checkForSeed(seed))seed=seedsArray[random.nextInt(seeds.length-1)].longValue();
return seed;
public int nextInt(int max){
shuffle();
random.setSeed(seeds[random.nextInt(seeds.length-1)]);
long seed = seedsArray[random.nextInt(seeds.length-1)].longValue();
while (checkForSeed(seed))
seed = seedsArray[random.nextInt(seeds.length-1)].longValue();
random.setSeed(seed);
int seedone = random.nextInt(max)+1;
if (checkForValue(seedone))
seedone = random.nextInt(max)+1;
return (seedone);
public int nextInt(){
return nextInt(MAXINT);
} private int currentseedpos = 0;
private int currentvaluepos = 0;
public int lastValue[] = new int[0];
public long lastSeed[] = new long[0];
public final int MAXINT = 9999;
public int maxSeeds = 400;
public int maxValues = 5;
private java.lang.Long[] seedsArray = new java.lang.Long[seeds.length];
private java.util.Random random = new java.util.Random();
public static void main(String[] args) throws Exception {
TestRandom2 testrandom = new TestRandom2();
testrandom.run();
----Code
Thanks for all the response I've been getting please continue to help -
Problem in writing to the file
I use this labview code to read and save some electrical measurement data from a set of instruments. I am having a problem that the code stops writing to the file after a while. It stops responding too. The only way to stop it then is to use the task manager and kill it. The code was written for an older version of labview but now I am using labview 9. Everything else seems updated but there's a section that uses Write characters to file vi and that may be causing the problem. I made a few futile attempts to change it. I would highly appreciate if someone takes a look at it and could tell me what's going wrong.
Attachments:
JANUS 2.2_4K Probe edit (2).vi 60 KBI will second aeastet's advice - please look into how state machines and producer/consumer loops work and use them. Your program is very inefficient, but is very similar to what I would have written before I learned about state machines and producer/consumer loops. Start with the LabVIEW help and go from there. These forums and the National Instruments website can give you lots of help.
Two things that will help you for this particular problem:
At every loop iteration, you are opening the file, seeking to the end of it, appending data, then closing the file. This is very slow and the code you use, as mentioned above, will not work if the file size exceeds 2GBytes. I would recommend you open the file once, then use the write primitive to write to it until you finish, then close it. You do not need the write character to file VI. No seeking. No repetitive opening and closing. You can either open and close outside the loop, or use case structures and boolean flags (as you have done for other things) to open and close inside the loop.
After you write to the file, if you choose to graph, you are reopening the file, reading the entire thing, and plotting this data. This is another major slowdown that will only get worse as your file gets bigger. You would be far better off caching the data in a shift register and plotting it on demand. It would probably take less memory, as well. You may want to read the tutorial Managing Large Data Sets in LabVIEW.
One last tip. You use Value properties to read and set the values of front panel controls. Local variables are far faster (about three orders of magnitude). However, do not make the mistake of using local variables for data storage. Data is wires. Local variables are a way to communicate to the front panel. You seem to have this down, but a reminder to others reading this thread is in order.
Let us know if you need more explanation or help. Good luck!
This account is no longer active. Contact ShadesOfGray for current posts and information. -
Hi
I've successfully read from INF file by the following code :
public String Read_INI(String Path , String Attribute)
Properties p = new Properties();
try
p.load(new FileInputStream(Path));
catch (Exception e)
System.out.println(e);
return p.getProperty(Attribute);
}Now I'm facing a problem in writing in INF file
i used this code but it doesn't work!
public void Write_INI(String Value, String Attribute, String Path)
Properties p = new Properties();
try
p.load(new FileInputStream(Path));
p.setProperty(Attribute, Value);
catch (Exception e)
System.out.println(e);
}any ideas ?thnx very much :)
just i added :
p.store(new FileOutputStream(Path), Value);after :
p.setProperty(Attribute, Value); -
Code for JProgressbar for monitoring while writing into a files
Could anybody help me in sample code to implement a JProgressbar while writing into a file.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.reflect.*; // for InvocationTargetException
public class Test extends JApplet {
private JProgressBar pb = new JProgressBar();
public void init() {
Container contentPane = getContentPane();
final JButton startButton = new JButton("start");
contentPane.setLayout(new FlowLayout());
contentPane.add(startButton);
contentPane.add(pb);
startButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
GetInfoThread t = new GetInfoThread(Test.this);
t.start();
// this is okay because actionPerformed
// is called on the event dispatch thread
startButton.setEnabled(false);
public JProgressBar getProgressBar() {
return pb;
class GetInfoThread extends Thread {
Runnable getValue, setValue;
int value, currentValue;
public GetInfoThread(final Test applet) {
getValue = new Runnable() {
public void run() {
JProgressBar pb = applet.getProgressBar();
currentValue = pb.getValue();
setValue = new Runnable() {
public void run() {
JProgressBar pb = applet.getProgressBar();
pb.setValue(value);
public void run() {
while(true) {
try {
Thread.currentThread().sleep(500);
// This is okay because the getValue's run()
// is invoked on the event dispatch thread
value = (int)(Math.random() * 100);
try {
SwingUtilities.invokeAndWait(getValue);
catch(InvocationTargetException ite) {
ite.printStackTrace();
catch(InterruptedException ie) {
ie.printStackTrace();
if(currentValue != value) {
SwingUtilities.invokeLater(setValue);
catch(InterruptedException e) {
e.printStackTrace();
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.reflect.*; // for InvocationTargetException
public class Test extends JApplet {
private JProgressBar pb = new JProgressBar();
public void init() {
Container contentPane = getContentPane();
final JButton startButton = new JButton("start");
contentPane.setLayout(new FlowLayout());
contentPane.add(startButton);
contentPane.add(pb);
startButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
GetInfoThread t = new GetInfoThread(Test.this);
t.start();
// this is okay because actionPerformed
// is called on the event dispatch thread
startButton.setEnabled(false);
public JProgressBar getProgressBar() {
return pb;
class GetInfoThread extends Thread {
Runnable getValue, setValue;
int value, currentValue;
public GetInfoThread(final Test applet) {
getValue = new Runnable() {
public void run() {
JProgressBar pb = applet.getProgressBar();
currentValue = pb.getValue();
setValue = new Runnable() {
public void run() {
JProgressBar pb = applet.getProgressBar();
pb.setValue(value);
public void run() {
while(true) {
try {
Thread.currentThread().sleep(500);
// This is okay because the getValue's run()
// is invoked on the event dispatch thread
value = (int)(Math.random() * 100);
try {
SwingUtilities.invokeAndWait(getValue);
catch(InvocationTargetException ite) {
ite.printStackTrace();
catch(InterruptedException ie) {
ie.printStackTrace();
if(currentValue != value) {
SwingUtilities.invokeLater(setValue);
catch(InterruptedException e) {
e.printStackTrace(); -
Help in writing to a file with newline facility
I am using the RandomAccessFile class to write to a file.
The content i am writing to the file is of the form
KEY=VALUE.
I am writing several key value pairs like this.
Everytime I write a KEY=VALUE it should be in a new line.
So, what should i do to write in a new line everytime.
Please help.
Thanks in advance.Well the square most likely is just a non-printable character. If you are on windows the line.separator is \r\n (0x13 and 0x10) some file editors show the \n as a "square" as the only expect a \r its just how you interpret the file.. you can't atually do anythign about it as it isn't "wrong" if you skip the \n some programs might not see it as a newline. If you add it some may display a square.. Its the great gift of different OS's using different line separators..
HTH
Lima -
Pick value from file in FOR loop
Hello All,
I was trying to delete records from database day by day and commit. Is it possible to pick the dates from file and then delete the database record for that day. Something like below.
For day IN <File.txt>
LOOP
delete from table where date = '<1st value from File.txt>';
commit;
END LOOP;
I have to do this from unix box, so i can place the file (with list of dates as input) in the path from where i am issuing sqlplus.
Please suggest any other way to delete it day by day is most welcome.
Thanks.982193 wrote:
Hello All,
I was trying to delete records from database day by day and commit. Is it possible to pick the dates from file and then delete the database record for that day. Something like below.You an use EXTERNAL TABLE (Or SQL Loader, if the file cannot be moved to the DB server) to read from a file and it can be used in your DELETE statements just as a normal table.
>
For day IN <File.txt>
LOOP
delete from table where date = '<1st value from File.txt>';
commit;
END LOOP;
LOOP is a bad idea.. You could do it in a single statement..
delete from table where date in (select the_date_coumn from the external_table);
And COMMIT inside LOOP is again not a good idea.. -
Expdp with parallel writing in one file at a time on OS
Hi friends,
I am facing a strange issue.Despite giving parallel=x parameter the expdp is writing on only one file on OS level at a time,although it is writing into multiple files sequentially (not concurrently)
While on other servers i see that expdp is able to start writing in multiple files concurrently. Following is the sample log
of my expdp .
++++++++++++++++++++
Export: Release 10.2.0.3.0 - 64bit Production on Friday, 15 April, 2011 3:06:50
Copyright (c) 2003, 2005, Oracle. All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
Starting "CNVAPPDBO4"."EXPDP_BL1_DOCUMENT": CNVAPPDBO4/********@EXTTKS1 tables=BL1_DOCUMENT DUMPFILE=DUMP1_S:Expdp_BL1_DOCUMENT_%U.dmp LOGFILE=LOG1_S:Expdp_BL1_DOCUMENT.log CONTENT=DATA_ONLY FILESIZE=5G EXCLUDE=INDEX,STATISTICS,CONSTRAINT,GRANT PARALLEL=6 JOB_NAME=Expdp_BL1_DOCUMENT
Estimate in progress using BLOCKS method...
Processing object type TABLE_EXPORT/TABLE/TABLE_DATA
Total estimation using BLOCKS method: 23.93 GB
. . exported "CNVAPPDBO4"."BL1_DOCUMENT" 17.87 GB 150951906 rows
Master table "CNVAPPDBO4"."EXPDP_BL1_DOCUMENT" successfully loaded/unloaded
Dump file set for CNVAPPDBO4.EXPDP_BL1_DOCUMENT is:
/tksmig/load2/oracle/postpaidamd/DUMP1_S/Expdp_BL1_DOCUMENT_01.dmp
/tksmig/load2/oracle/postpaidamd/DUMP1_S/Expdp_BL1_DOCUMENT_02.dmp
/tksmig/load2/oracle/postpaidamd/DUMP1_S/Expdp_BL1_DOCUMENT_03.dmp
/tksmig/load2/oracle/postpaidamd/DUMP1_S/Expdp_BL1_DOCUMENT_04.dmp
Job "CNVAPPDBO4"."EXPDP_BL1_DOCUMENT" successfully completed at 03:23:14
++++++++++++++++++++
uname -aHP-UX ocsmigbrndapp3 B.11.31 U ia64 3522246036 unlimited-user license
Is it hitting any known bug? Please suggest.
regds,
kunwarPARALLEL always using with DUMPFILE=filename_*%U*.dmp. Did yoy put the same parameter on target server?
PARALLEL clause depend on server resources. If the system resources allow, the number of parallel processes should be set to the number of dump files being created. -
Error in writing to export file
Hi,
I am getting the below error on running export:-
EXP-00002: error in writing to export file
The query is as given below:-
exp cam3_mpcb2/cam3_mpcb2@ORA10G file='c:\MPCB_cam_20120113.dmp' log='c:\MPCB_20120113.log'
CAn i overcome this error by adding "ignore" at the end of the query or how can i modify the above query ?Are there any other error messages that accompany the one you posted?
EXP-00002: error in writing to export file
Cause: Export could not write to the export file, probably because of a device error. This message is usually followed by a device message from the operating system.
Action: Take appropriate action to restore the device. Do you have permissions to write to this location? -
Hi,
I am getting an error while writing to a file.Here is the sample code in which I am getting error.The STDERR is getting printed to console but the same is not getting written to a file.
package Sample;
import java.util.*;
import java.io.*;
public class MediocreExecJavac
public static void main(String args[])
try
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec("perl ic_start");
InputStream stderr = proc.getErrorStream();
InputStreamReader isr = new InputStreamReader(stderr);
BufferedReader br = new BufferedReader(isr);
FileWriter fw=new FileWriter("result.txt");
String line = null;
System.out.println("<ERROR>");
while ( (line = br.readLine()) != null)
System.out.println(line);
fw.write(line);
System.out.println("</ERROR>");
int exitVal = proc.waitFor();
System.out.println("Process exitValue: " + exitVal);
fw.close();
} catch (Throwable t)
t.printStackTrace();
}Below is the output -
<ERROR>
Can't open perl script "ic_start": No such file or directory
java.lang.NullPointerException
at java.io.Writer.write(Unknown Source)
at Sample.MediocreExecJavac.main(MediocreExecJavac.java:21)
Please tell where the program is going wrong.i think it is just the path of file that u r missing
-
Exporting Metadata (caption information) from JPEGS to a comma separated value (CSV) file
Here is my dilemma. I am an archivist at an arts organization and we are in the process of digitizing many of our materials to post them on the web and make them available to internet users. One of the principle components of our collection is a large trove of photographs. We have been in the process of digitizing these images and embedding metadata (in the Caption/Description, Author/Photographer and Copyright fields) via PhotoShops File Info command.
Now I am at a crossroads. We need to extract this metadata and transfer it into a comma separated value form, like an Excel spreadsheet or a FileMakerPro database. I have been told that it is not possible to do this through PhotoShop, that I must run a script through Acrobat or Bridge. I have no clue how to do this. I have been directed to a couple of links.
First I was directed to this (now dead) link: http://www.barredrocksoftware.com/products.html
The BSExportMetadata script allegedly exports the metadata from files selected in Adobe's Bridge into a comma separated value (CSV) file suitable for import into Excel, Access and most database programs. It installs as a Bridge menu item making it simple to use. The the Export Metadata script provides you with an easy to use wizard allowing you to select associated information about a set of images that you can then export. This script requires Creative Suite 2 (CS2). This script sounds like it does exactly what I want to do, but unfortunately, it no longer exists.
Then I found this:
Arnold Dubin, "Script to Export and Import Keywords and Metadata" #13, 8 Aug 2005 7:23 am
I tried this procedure, but nothing seemed to happen. I also tried to copy the script into the JAVASCRIPT action option in Acrobat, but I received a message that the script had an error. It also seems to me that this script does not set up a dumping point, that is, a file into which this information will be exported to.
I am a novice, not a code writer or a programmer/developer. I need a step-by-step explanation of how to implement this filtering of information. We have about 2000 jpeg and tiff files, so I would rather not go through each file and copy and paste this information elsewhere. I need to find out how to create a batch process that will do this procedure for me. Can anyone help?Hello -
Is anyone aware of a tool that will do the above that is available for mac? Everything I've found so far seems to be PC only.
Any help is appreciated, thanks! -
Problem writing object to file
Hi everyone,
I am creating an index by processing text files. No of files are 15000 and index is a B+ Tree. when all files processed and i tried to write it to the file it gives me these errors.
15000 files processed.
writing to disk...
Exception in thread "main" java.lang.StackOverflowError
at sun.misc.SoftCache.processQueue(SoftCache.java:153)
at sun.misc.SoftCache.get(SoftCache.java:269)
at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:244)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1029)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1369)
at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:380)
at java.util.Vector.writeObject(Vector.java:1018)
at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:890)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1333)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1284)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1073)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1245)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1069)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1369)
at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:380)
at java.util.Vector.writeObject(Vector.java:1018)
at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:890)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1333)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1284)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1073)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1369)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1341)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1284)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1073)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1369)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1341)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1284)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1073)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1369)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1341)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1284)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1073)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1369)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1341)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1284)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1073)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1369)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1341)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1284)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1073)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1369)
..........can anyone point out the mistake im doing?
thanksthe B+ Tree is balanced and is perfectly working without writing to the file. and i am using default writeObject() method of ObjectOutputStream.
try {
FileOutputStream f_out = new FileOutputStream ("tree.idx");
ObjectOutputStream obj_out = new ObjectOutputStream (new BufferedOutputStream (f_out));
for (int x = 0, l = files.length; x < l; x++) {
ProcessTree(files[x].toString());
System.out.println("Writing main index to the disk...");
obj_out.writeObject (tree);
obj_out.flush();
obj_out.close();
} catch (Exception e)
System.out.println (e.toString ());
System.out.println("Error Writing to Disk!");
} -
File Adapter Polling issue(Is there critical value of File size )?
Hi
I use File adapter as the Activation to initialize a BPEL process instance .The source data is a kind of Delimited file format.On my PC, when the file size is less than 4M ,everything works fine ,But when the size increased. The BPEL process will not initialize the instance.When the source data is XML data , the "critical value " is about 12M. The error msg is below.
<2005-08-08 12:48:26,209> <INFO> <default.collaxa.cube.activation> <File Adapter::Inbound> Processing file : D:\Temp\WOSSystemIntegration\InBoundFiles\LOADPLAN_DATA_200508041708.xml
<2005-08-08 12:48:29,455> <INFO> <default.collaxa.cube.activation> <FileAdapter::Inbound> Sending message to Adapter Framework for posting to BPEL engine: { file=D:\Temp\WOSSystemIntegration\InBoundFiles\LOADPLAN_DATA_200508041708.xml
<2005-08-08 12:48:40,197> <ERROR> <default.collaxa.cube> <BaseCubeSessionBean::l
ogError> Error while invoking bean "cube delivery": Delivery callback message se
rialization failed.
An attempt to serialize the delivery callback messages for conversation "LocalGU
ID:d0b7ccf8e4242850:134b07e:10594606738:-7ffc", message "d0b7ccf8e4242850:134b07
e:10594606738:-7ffb" to binary format has failed. The exception reported is:
<2005-08-08 12:48:40,245> <ERROR> <default.collaxa.cube> <BaseCubeSessionBean::l
ogError> Error while invoking bean "delivery": Delivery callback message seriali
zation failed.
An attempt to serialize the delivery callback messages for conversation "LocalGU
ID:d0b7ccf8e4242850:134b07e:10594606738:-7ffc", message "d0b7ccf8e4242850:134b07
e:10594606738:-7ffb" to binary format has failed. The exception reported is:
<2005-08-08 12:48:40,245> <ERROR> <default.collaxa.cube.activation> <AdapterFram
ework::Inbound> [Read_ptt::Read(loadPlanCollection)] - JCA Activation Agent was
unable to perform delivery of inbound message to BPEL Process 'bpel://localhost/
default/P2E_WOS_LP~1.0/' due to: Delivery callback message serialization failed.
An attempt to serialize the delivery callback messages for conversation "LocalGU
ID:d0b7ccf8e4242850:134b07e:10594606738:-7ffc", message "d0b7ccf8e4242850:134b07
e:10594606738:-7ffb" to binary format has failed. The exception reported is:
<2005-08-08 12:48:40,245> <ERROR> <default.collaxa.cube.activation> <AdapterFram
ework::Inbound>
com.oracle.bpel.client.ServerException: Delivery callback message serialization
failed.
An attempt to serialize the delivery callback messages for conversation "LocalGU
ID:d0b7ccf8e4242850:134b07e:10594606738:-7ffc", message "d0b7ccf8e4242850:134b07
e:10594606738:-7ffb" to binary format has failed. The exception reported is:
at com.collaxa.cube.engine.delivery.DeliveryHandler.initialPostAnyType(D
eliveryHandler.java:328)
at com.collaxa.cube.engine.delivery.DeliveryHandler.initialPost(Delivery
Handler.java:219)
at com.collaxa.cube.engine.delivery.DeliveryHandler.post(DeliveryHandler
.java:83)
at com.collaxa.cube.ejb.impl.DeliveryBean.post(DeliveryBean.java:181)
at IDeliveryBean_StatelessSessionBeanWrapper22.post(IDeliveryBean_Statel
essSessionBeanWrapper22.java:861)
at com.oracle.bpel.client.delivery.DeliveryService.post(DeliveryService.
java:161)
at oracle.tip.adapter.fw.AdapterFrameworkListenerBase$DeliveryServiceMon
itor.send(AdapterFrameworkListenerBase.java:2340)
at oracle.tip.adapter.fw.AdapterFrameworkListenerBase.executeDeliverySer
viceSend(AdapterFrameworkListenerBase.java:478)
at oracle.tip.adapter.fw.AdapterFrameworkListenerBase.deliveryServiceSen
d(AdapterFrameworkListenerBase.java:535)
at oracle.tip.adapter.fw.jca.AdapterFrameworkListenerImpl.performSingleA
ctivation(AdapterFrameworkListenerImpl.java:699)
at oracle.tip.adapter.fw.jca.AdapterFrameworkListenerImpl.onMessage(Adap
terFrameworkListenerImpl.java:567)
at oracle.tip.adapter.fw.jca.messageinflow.MessageEndpointImpl.onMessage
(MessageEndpointImpl.java:121)
at oracle.tip.adapter.file.inbound.ProcessWork.publishMessage(ProcessWor
k.java:651)
at oracle.tip.adapter.file.inbound.ProcessWork.doTranslation(ProcessWork
.java:456)
at oracle.tip.adapter.file.inbound.ProcessWork.processMessages(ProcessWo
rk.java:200)
at oracle.tip.adapter.file.inbound.ProcessWork.run(ProcessWork.java:139)
at oracle.tip.adapter.fw.jca.work.WorkerJob.go(WorkerJob.java:51)
at oracle.tip.adapter.fw.common.ThreadPool.run(ThreadPool.java:267)
at java.lang.Thread.run(Thread.java:534)
<2005-08-08 12:48:40,245> <INFO> <default.collaxa.cube.activation> <File Adapter
::Inbound> Failed to send message {D:\Temp\WOSSystemIntegration\InBoundFiles\LOA
DPLAN_DATA_200508041708.xml} to Adapter Framework.
<2005-08-08 12:48:40,245> <WARN> <default.collaxa.cube.activation> <AdapterFrame
work::Inbound> [Read_ptt::Read(loadPlanCollection)] - onReject: Sending invalid
inbound message to Exception Handler: file://D:/Temp/WOSSystemIntegration/Reject
edMessages
<2005-08-08 12:49:44,617> <FATAL> <default.collaxa.cube.activation> <AdapterFram
ework::Inbound> [Read_ptt::Read(loadPlanCollection)] - Resource Adapter requeste
d Process shutdown
<2005-08-08 12:49:48,676> <INFO> <default.collaxa.cube.activation> <AdapterFrame
work::Inbound> Adapter Framework instance: OraBPEL - performing endpointDeactiva
tion for portType=Read_ptt, operation=Read
<2005-08-08 12:49:48,676> <INFO> <default.collaxa.cube.activation> <File Adapter
::Inbound> Endpoint De-activation called in adapter for endpoint : D:\Temp\WOSSy
stemIntegration\InBoundFiles
<2005-08-08 12:49:49,042> <INFO> <default.collaxa.cube.activation> <AdapterFrame
work::Inbound> JCAActivationAgent::onStateChanged State is changed for process '
bpel://localhost/default/P2E_WOS_LP~1.0/', state=OFF
how can i solve this problem?can i predeploy some parameter? Is there some critical value of File size for the processing of File Adapter ?Hi,
There is no specific parameters to specify the maximum file size to be read in. It is just limited by the heap size of the JVM running the BPEL engine.
If you have enough RAM on your machine you can change the current heap size from 512Mbyte to 1Go by editing the startorabpel.bat file
and modifying the line :
set MEM_ARGS=-Xms512m -Xmx512m -Xmn300m -XX:MaxPermSize=80m
to
set MEM_ARGS=-Xms512m -Xmx1024m -Xmn300m -XX:MaxPermSize=80m
But only do it if you have at least 1.5 Gb of RAM on your machine, otherwise ot will keep spawing and you will have very bad performance.
Speaking about performance, do you really need to have a BPEL payload of 4 to 12 Mb ?
Will the BPEL process really need to access it ? if so, the best solution would be using batching techniques to cut you file in pieces and process it piece by peice.
FB. -
Cannot install PhotoShop CC "Error writing to temporary file location", how do I fix this?
I am working on a Mac OS X Server, version 10.6.8
I use my Adobe applications - Indesign, PhotoShop, Illustrator, and a couple of others - primarily for school work (graphic design). I download the applications from my Adobe Application Manager, but they recently stopped working. I didn't know if this was due to recent updates or the fact that I had just changed out my hard drive when the original one failed. I uninstalled the applications, and am trying to re-install them, but am receiving the error message, "Error writing to temporary file location".
Does anyone know how to fix this? Is it just because I'm running 10.6.8? If so, can I make my applications work without getting a whole new computer?Please refer PS system requirements from this link:
http://helpx.adobe.com/photoshop/system-requirements.html#Photoshop CC system requirements/
Regards,
Ashutosh -
How to insert new line char while writing bytes into file
Hello Sir,
Is it possible to insert the new line character in set of String variables and stored them into bytearray ,then finally write into File?
This is the sample code which i tried:
File f = new File(messagesDir,"msg" + msgnum + ".txt");
FileOutputStream fout = new FileOutputStream(f);
String fromString = "From: "+msg.getFrom()+"\n";
String toString = "To: "+msg.getTo()+"\n";
String dateString = "Sent: "+msg.getDate()+"\n";
String msgString =msg.getBody()+"\n";
String finalString=fromString+toString+dateString+msgString;
byte[] msgBytes = finalString.getBytes();
fout.write(msgBytes);
fout.close();in the above code , i tried to add the new line as "\n" in end of each string. but when i look into the generated files msg1.txt , it contains some junk char [] .
please provide me the help
regards
venkibut it has still shown the the junk char, its not able
to create the new line in the created file i am afraid
how am i going to get the solution?:(Do not be afraid dear sir. You are obviously using a windows operating system or a mac operating system. On windows a newline is "\r\n" not '\n', and on a mac a newline is '\r', not '\n'. If you make that correction, dear sir, your program will work.
However, there is a better way. First, you probably want to buffer your output if you are going to write more than one time to the file, which will make writing to the file more efficient. In addition, when you buffer your output, you can use the newLine() method of the BufferedWriter object to insert a newline. The newline will be appropriate for the operating system that the program is running on. Here is an example:
File f = new File("C:/TestData/atest.txt");
BufferedWriter out = new BufferedWriter(new FileWriter(f) );
String fromString = "From: Jane";
out.write(fromString);
//Not written to the file until enough data accumulates.
//The data is stored in a buffer until then.
out.newLine();
String toString = "To: Dick";
out.write(toString);
out.newLine();
String dateString = "Sent: October 27, 2006";
out.write(dateString);
out.newLine();
out.close();
//Causes any unwritten data to be flushed from
//the buffer and written to the file.
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