How to use ImageIcon's byte[] constructor?
As subject states
I've tried many many times and I just cna't get it. I can get it working using ImageIcon's String (filename) constructor, but the application I'm developing for requires the use of a byte[] array.
Could someone please share some code that reads data from an image file (jpg preferably) and converts it into an array of bytes and uses that to (successfully!) create a working ImageIcon?
Thanks
It should work to use a BufferedInputStream instead of BufferedReader and InputStreamReader. I tried this test code.
public static void main(String[] args) throws Exception {
ArrayList byteList=new ArrayList();
byte[] inbytes={12,-127,-126,-2};
ByteArrayInputStream bas=new ByteArrayInputStream(inbytes);
BufferedInputStream br=new BufferedInputStream(bas);
byteList.add(new Integer(br.read()));
byteList.add(new Integer(br.read()));
byteList.add(new Integer(br.read()));
byteList.add(new Integer(br.read()));
byte[] byteArray = new byte[byteList.size()];
for(int i=0;i<byteArray.length;i++) {
byteArray=(byte) (((Integer) byteList.get(i)).intValue());
System.out.println(byteArray[i] );
It displays the same values as the original inbytes values. When I tried the same code except using InputStreamReader and BufferedReader, I did not get the original inbytes values. There's character encoding with a Reader that may change the values. Streams give the raw data.
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how to use Progress Monitors?
in the name of god
hi friends
i have a problem. I am writing a program that read data from a file record by record and store to a database. my problem is here that i want add a progress monitor that when the program is doing its work it appear. I use ProgressMonitorInputStream class but it can not work well. It appear and read file record by record and store in table of database but its progress dont move and do nothing. I know that I have a tiny problem in use this class. Please guide me.
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best regards
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private Component _Main;
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}Edited by: firethumbs on Mar 26, 2009 12:43 PMIN THE NAME OF GOD
hi firends
i forget say one thing. if remove while loop content this program will work good. i suppose that the while condition and read file records not similar. because while condition check bytes but in while body read records. is that true?
how can solve this problem?
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Hi
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<font size="2">StartReader Type: PC/SC terminal Virtual CAD Reader 0
Terminal opened
ATR: 3b 90 95 90 00 81 1f c7 cc
sending data: 11223344
<font color="red">Protocol and parameter selection not supported by this terminal!</font>
at com.ibm.jc.JCTerminal.pps(Unknown Source)
at com.test.essai.main(essai.java:46)
</font>>
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<font size="2">Running in Virtual Card mode...
ATR: 3B909580811FC7DC
Waiting for event (power: off, protocol: unknown/undefined)...
Waiting for event (power: off, protocol: unknown/undefined)...
Raw event data: 01
Event: VCAD_EC_POWER_ON (0x01)
Reply: VCAD_SC_OK (0x00) (in reply to VCAD_EC_POWER_ON) ATR: 3b909580811fc7dc
Raw reply data: 003b909580811fc7dc
Sending reply...
Waiting for event (power: on, protocol: unknown/undefined)...
Waiting for event (power: on, protocol: unknown/undefined)...
Raw event data: 06ff11957b
Event: VCAD_EC_EXCHANGE_TPDU (0x06) C-TPDU: ff11957b
Accepting any PPS request parameters: Protocol: t=1; FI=9, DI=5
Reply: VCAD_SC_OK (0x00) (in reply to VCAD_EC_EXCHANGE_TPDU) R-TPDU: ff11957b
Raw reply data: 00ff11957b
Sending reply...
</font>>
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<font size="2">Waiting for event (power: on, protocol: t=1)...
Raw event data: 0501
Event: VCAD_EC_SET_PROTOCOL (0x05) Protocol: t=1
Reply: VCAD_SC_OK (0x00) (in reply to VCAD_EC_SET_PROTOCOL)
Raw reply data: 00
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Waiting for event (power: on, protocol: t=1)...
Raw event data: 0600c10120e0
Event: VCAD_EC_EXCHANGE_TPDU (0x06) C-TPDU: 00c10120e0
Handling protocol-specific command...
Protocol block:
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PCB: 0xc1 (T1_S_BLOCK); S-Block type: T1_SBT_IFS_REQ
LEN: 1
INF:
IFS: 20
EDC: 0xe0
Changing IFS(other) from 32 to 32
Reply: VCAD_SC_OK (0x00) (in reply to VCAD_EC_EXCHANGE_TPDU) R-TPDU: 00e10120c0
Raw reply data: 0000e10120c0
Sending reply...
Waiting for event (power: on, protocol: t=1)...
Raw event data: 0600001300a404000d54657374436c69656e7441707000f0
Event: VCAD_EC_EXCHANGE_TPDU (0x06) C-TPDU: 00001300a404000d54657374436c69656e74
41707000f0
Processing app. command...
App. block:
NAD: 0x00
PCB: 0x00 (T1_I_BLOCK); Seq. #: 0; More data: 0
LEN: 13
INF:
00a404000d54657374436c69656e7441707000
EDC: 0xf0
cmd name: N/A (class #4)
cmd: 00a40400 0d 54657374436c69656e74417070 70
Responding with the reversed command data, SW is hardcoded to 90<INS>
rsp: 707041746e65696c4374736554 90a4
Reply: VCAD_SC_OK (0x00) (in reply to VCAD_EC_EXCHANGE_TPDU) R-TPDU: 00000f70704
1746e65696c437473655490a475
Raw reply data: 0000000f707041746e65696c437473655490a475
Sending reply...
Waiting for event (power: on, protocol: t=1)...
Raw event data: 060040041122334400
Event: VCAD_EC_EXCHANGE_TPDU (0x06) C-TPDU: 0040041122334400
Processing app. command...
App. block:
NAD: 0x00
PCB: 0x40 (T1_I_BLOCK); Seq. #: 1; More data: 0
LEN: 4
INF:
11223344
EDC: 0x00
cmd name: N/A (class #1)
cmd: 11223344
Responding with the reversed command data, SW is hardcoded to 90<INS>
rsp: 9022
Reply: VCAD_SC_OK (0x00) (in reply to VCAD_EC_EXCHANGE_TPDU) R-TPDU: 0040029022f
0
Raw reply data: 000040029022f0
Sending reply...
Waiting for event (power: on, protocol: t=1)...
Raw event data: 03
Event: VCAD_EC_POWER_OFF (0x03)
Reply: VCAD_SC_OK (0x00) (in reply to VCAD_EC_POWER_OFF)
Raw reply data: 00
Sending reply...
Waiting for event (power: off, protocol: unknown/undefined)...
</font>>
If someone know how to use this function or have any advice to help me to select a specific protocol with Jcop API, please let me know.
If you you need any more information don't hesitate to ask.
Best regards
Edited by: Cyril on Sep 22, 2011 9:54 AM-1
I'm using a virtual terminal (windows driver), and I don't see how I could turn off the Auto-pps. I've also tried with a real reader and a card and I have the same error.
-2
I've tried value in the range of the atr (based on this analysis: [url http://smartcard-atr.appspot.com/parse?ATR=3b909580811fc7dc]http://smartcard-atr.appspot.com/parse?ATR=3b909580811fc7dc ). But I don't know if only I value of baud-rate is possible in the range. Anyway I just would like to change the protocol, not the baud-rate.
-3
I've already tried to call pps function before, after the first reset, or with another reset later and I always got the same thing.
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term.pps(JCTerminal.PROTOCOL_T0, (int)312500);
} catch (Exception e) {
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}The same pps is always send after each reset... -
Dear Experts,
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CORE 11.1.0.6.0 Production
TNS for 64-bit Windows: Version 11.1.0.6.0 - Production
NLSRTL Version 11.1.0.6.0 - Production
Total RAM on box is 8G
Page File
Windows virtual memory equal on C,D,E,F drives is set to 12273M and allocated now is 11262M
LPENABLED is not set
SQL> show parameter pga_
pga_aggregate_target 0
SQL> show sga
Total System Global Area 5344731136 bytes
Fixed Size 2114736 bytes
Variable Size 4630514512 bytes
Database Buffers 671088640 bytes
Redo Buffers 41013248 bytes
SQL> show parameter memory
hi_shared_memory_address 0
memory_max_target 5G
memory_target 5G
shared_memory_address 0
SQL> show parameter sga
lock_sga FALSE
pre_page_sga FALSE
sga_max_size 5G
sga_target 0
Question :
Why oracle.exe is taking 8G virtual; bytes, memroy target can not go beyond 5G. How to minimized the virtual byte in perfmon
Thanks in advance your time and help.John, Thanks for the reply.
Please find the output of query
SQL> select pool,sum(bytes) from v$sgastat group by pool;
POOL SUM(BYTES)
915543216
java pool 67108864
streams pool 268503944
shared pool 2147494008
large pool 67108864
SQL>
SQL> select * from v$pgastat;
NAME VALUE UNIT
aggregate PGA target parameter 671088640 bytes
aggregate PGA auto target 147564544 bytes
global memory bound 104857600 bytes
total PGA inuse 533962752 bytes
total PGA allocated 810819584 bytes
maximum PGA allocated 1244466176 bytes
total freeable PGA memory 90243072 bytes
process count 450
max processes count 588
PGA memory freed back to OS 1.9883E+10 bytes
total PGA used for auto workareas 28210176 bytes
maximum PGA used for auto workareas 39973888 bytes
total PGA used for manual workareas 0 bytes
maximum PGA used for manual workareas 531456 bytes
over allocation count 7
bytes processed 2.6307E+10 bytes
extra bytes read/written 0 bytes
cache hit percentage 100 percent
recompute count (total) 72720
19 rows selected.
SQL>
SQL> show parameter _target
NAME TYPE VALUE
archive_lag_target integer 0
db_flashback_retention_target integer 1440
fast_start_io_target integer 0
fast_start_mttr_target integer 0
memory_max_target big integer 5G
memory_target big integer 5G
pga_aggregate_target big integer 0
sga_target big integer 0
SQL> sho parameter sga_max
NAME TYPE VALUE
sga_max_size big integer 5G -
How to use gui_download 's filetype of 'bin'
Hello,experts ,the detail of my problem as follows:
I use gui_download to download the invoice data :filetype is ASC,the download file is .txt file with tab as the field 's separator.
the internal table:i_khzl :DATA: BEGIN OF i_khzl OCCURS 0, "ITAB OF HEAD INFO.
fpdm(15), "invoice no
tdh(15),
khswdjh(15), "
khmc type TEXT100,
" khmc(100), "customer
khdz(100), "
khyh(100),
bz(100), "
qdhj(1),
jmhj(1),
fphm(18),
END OF i_khzl.
but there is not a Chinese characters like"燊" in the codepage 8400, which result in the customer name display as wrong ,the last byte is '?', and the I download the data using filetype of BIN ,the ? of customer name is gone,but the local file .txt the format is wrong, which the interface of the invocie system can not confirmed.
CALL FUNCTION 'GUI_DOWNLOAD'
EXPORTING
filename = g_fname
filetype = 'ASC'
write_field_separator = 'X'
trunc_trailing_blanks = 'X'
"codepage = '4102'
TABLES
data_tab = i_khzl
EXCEPTIONS
file_write_error = 1
no_batch = 2
gui_refuse_filetransfer = 3
invalid_type = 4
no_authority = 5
unknown_error = 6
header_not_allowed = 7
separator_not_allowed = 8
filesize_not_allowed = 9
header_too_long = 10
dp_error_create = 11
dp_error_send = 12
dp_error_write = 13
unknown_dp_error = 14
access_denied = 15
dp_out_of_memory = 16
disk_full = 17
dp_timeout = 18
file_not_found = 19
dataprovider_exception = 20
control_flush_error = 21
OTHERS = 22.
IF sy-subrc <> 0.
MESSAGE e003 WITH g_fname. "下载文件错误
ENDIF.
the bin download:
CALL FUNCTION 'GUI_DOWNLOAD'
EXPORTING
filename = g_fname
filetype = 'BIN'
TABLES
data_tab = i_khzl
EXCEPTIONS
file_write_error = 1
no_batch = 2
gui_refuse_filetransfer = 3
invalid_type = 4
no_authority = 5
unknown_error = 6
header_not_allowed = 7
separator_not_allowed = 8
filesize_not_allowed = 9
header_too_long = 10
dp_error_create = 11
dp_error_send = 12
dp_error_write = 13
unknown_dp_error = 14
access_denied = 15
dp_out_of_memory = 16
disk_full = 17
dp_timeout = 18
file_not_found = 19
dataprovider_exception = 20
control_flush_error = 21
OTHERS = 22.
IF sy-subrc <> 0.
MESSAGE e003 WITH g_fname. "下载文件错误
ENDIF.
THE CONTENT OF THE LOCAL TXT IS :
ASC:
0491052960 451281672481214 宜州市燊龙贸易有限责任公?
BIN:0491052960 451281672481214宜州市燊龙贸易有限责任公司
the format of the two txt content is different, how to change the bin 's type to asc' type ?or how to use the gui_download function to solve the wrong display of the customer name?
pls help me ,
much appreciated.Dear Pradeep,
Find the below link which explains a simple data download to excel from a table view.
www.sapt echnical.com/Tutorials/BSP/Excel/Index.htm
Try to avoid the way your using in the BSP application and it is abdicable to use the standard methods / class available like "cl_bsp_utility"
Hope this will be helpful.
Regards,
Gokul.N
Edited by: Gokul on Oct 8, 2009 9:57 AM -
How to track no of bytes transferred
Hi there,
how to track no of bytes transferred
while downloading a file using java servlets.
please note that i am not writing any client side application like applet...
Hence I want to track no of bytes transffered to client end from my server (using servlets)
Please kindly help me out as soon as possible.
awaiting the solution immediately.
thanks,
venkat//the following is the code what i have written in my servlet.
res.setContentType(MIME); // I hava parameterised the MIME tag
OutputStream out=res.getOutputStream();
int counter=0;
File f1 = new File("c:/x.pdf");
//int k=(int)f1.length();
fis = new FileInputStream(f1);
byte[] buffer=new byte[fis.available()];
fis.read(buffer);
for(i=0; i<buffer.length; i++)
try
counter=i+1; //getting the number of bytes got transferred
out.write(buffer,i,1); //write to client's directory
catch(IOException ex)
System.out.println("exception while download="+ex.getMessage());
downloaded=true;
if(counter!=buffer.length)
download_error="Not Downloaded";
download=false;
//while executing the above servlet, the servlet prompts for a save as dialog (without file extension, please note I have specified the MIME tag also).
Now the client is entering the file and clicking save
In between he cancels and file is not downloaded to the client's directory.
Now the counter length should not match with the buffer.length, but it is matching exactly and stating that the file has been downloaded properly.
I hope you would have understood my problem.
Also note that I dont have any client side application to monitor the download.
Please let me know how to solve the problem as soon as possible
expecting your reply at the earliest thanks. -
How to use parameter passed from standard page in VO query of custom page
Hi everyone,
I have a custom page which needs to be called from a standard page. Now this custom page is based on some parameters passed from standard page.
How do I catch those parameters i my custom page .
And how to use those parameters in the VO query of my custom page.
Edited by: Bunny on Nov 11, 2010 9:16 AMHi,
Bunny wrote:
I have a custom page which needs to be called from a standard page. Now this custom page is based on some parameters passed from standard page.
How do I catch those parameters i my custom page .---If standard page the button style is :Button,Then u can set Destination URL in personalization.
Destination UR:"OA.jsp?page=/xxx/oracle/apps/po/msg/webui/CustomUpdatePG&Flag=" +Value ---Like u can pass params
---IF the button style is :Submitbutton ,Then u need to customization of the co.
---In co processFormReq call a cutom page like below.
pageContext.setForwardURL("OA.jsp?page=/xxx/oracle/apps/po/msg/webui/customUpdatePG&Flag=" +Value, null, (byte)0, null, null, true, "N", (byte)0);
---In custom page co in processRequest u can get these value :String value=pageContext.getParameter("Flag");
And how to use those parameters in the VO query of my custom page.---Get the vo and set where clause
String where="valueAttr="+value;
vo.setWhereClauseParams(null);
vo.setWhereClause(where);
vo.executeQuery();
Regards
Meher Irk
Edited by: Meher Irk on Nov 11, 2010 11:53 PM
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