leonardo ginting

Ulf Dittmer wrote:You can't read and write a file at the same time. You'll need to write to a different file than the one you're reading. After you're done, you can delete the former and rename the latter.

ahhh ok thanks ulf you have given me enlightment thank you so much ulf,,
it means i have to create a new class to for modify the text that ive created right?


BF
Leonardo

Hi guys
how could i modify text file java by line i.e

i have 4 line and each line i have a words
aaa bbb ccc ddd
and i would like to modify line number 2 which is 'bbb'
being rrrr

and how could i do that?

here is my code


try { String content = "aaa \n"; String content2 = "bbb"; String content3 = "ccc"; String content4 = "ddd"; File file = new File("/home/leonardo/Desktop/filename.txt"); FileWriter fw = new FileWriter(file.getAbsoluteFile()); BufferedWriter bw = new BufferedWriter(fw); bw.write(content); bw.write(content2); bw.write(content3); bw.write(content4); bw.close(); FileReader fr = new FileReader(file); LineNumberReader lnr = new LineNumberReader(fr); BufferedReader br = new BufferedReader(fr); PrintWriter pw = new PrintWriter(fw); // if file doesnt exists, then create it if (!file.exists()) { file.createNewFile(); } String lineToRemove = "12"; String old; int linenumber = 0; String trimmedLine = ""; while (( old= lnr.readLine()) != null) { trimmedLine = old.trim(); if (trimmedLine.equals(lineToRemove)) { continue; } bw.write(old); linenumber++; } System.out.println("Total number of lines : " + linenumber); lnr.close(); System.out.println("Done"); } catch (IOException e) { e.printStackTrace(); } }


if i do this code i got an error because i've closed bw

the error is

java.io.IOException: Stream closed at java.io.BufferedWriter.ensureOpen(BufferedWriter.java:115) at java.io.BufferedWriter.write(BufferedWriter.java:220) at java.io.Writer.write(Writer.java:157) at filejava.FileJava.main(FileJava.java:64)

thanks guys
any help would be appreciate

BF
Leonardo

priya pratheepp wrote:Hi

answer to my post helped me a lot..my problem solved.many string buffer caused main problem and some more too..

thanks for tutorials

hi priya i recently got this error and i dont know how to solve this case and ive been increasing my memory on my run.conf

JAVA_OPTS="-Xms1048m -Xmx4048m -XX:MaxPermSize=216m

but im still getting this error?

how could i fix this? i have many setter and getter method does this method affect consuming the memory or causing java heap space?

thanks

hi Master

i would like to asking because recently i got this error and i dont know how to solve this i've been looking some tutorial but i'm still in that condition

why i'm getting Java Heap Space on jboss for your information i've been set JAVA_OPTS="-Xms1048m -Xmx4048m -XX:MaxPermSize=216m but im still getting this error
and for your information in one class i have many setter and Getter method,
1. does the setter and Getter method could causing heap memory because it consume memory?
2. how Can i exactly to determine Xms , Xms and MaxPermSize settings? is there any standard to determine the settings of Xms , Xms and MaxPermSize?

Thanks tim for your response,
are you sure tim i cant do that?
i have another idea how to make it but i would like to asking about how could put if statement on a4j:commandlink
because the idea is when the data is updated rich:popup close automatically,,

thanks

Hi guys,,
i've been searching tutorial for closing rich:popup panel from manage bean
but i didnt found at all

any of you guys know how could i close rich:popup from manage bean?


any help will be appreciated

thanks in advance

hi fatih thanks for replying

i already use point 1 as your suggestion

and thanks for your help

Hi Guys,,

is it possible for me to Declare cursor inside if or if statement inside cursor?

if possible how could i make it?

because i just made cursor like this

CURSOR cur IS if param_number = 0 then SELECT myField FROM MYTABLE WHERE field1 = param1 AND field2 BETWEEN param2 AND param3; Else select somefield where field1 =param4; End if;

But I got This error
Error(33,9): PLS-00103: Encountered the symbol "IF" when expecting one of the following: ( select <a SQL statement> Error(129,18): PLS-00103: Encountered the symbol "end-of-file" when expecting one of the following: begin case declare end exception exit for goto if loop mod null pragma raise return select update while with <an identifier> <a double-quoted delimited-identifier> <a bind variable> << close current delete fetch lock insert open rollback savepoint set sql execute commit forall merge pipe

any Help would be appreciate

thanks in advance

Hi guys thanks alot for considering about my question
My Post have edited and once more thanks i appreciate your hard work and your kindness all of you

thanks a million

God Bless
regards

hi guys thanks for spend some time to reply my message

anyway i dont mind if you do not delete my post but could you please to edit the code because i got complain about the code that i've posted,
because the code its confidential and my boss want me to edit the code that i've posted
i knew that martin has spent his valuable time to reply my thread and i appreciate that but if you guys dont mind help me to edit the code, just the code that i've posted
let me know what you are thinking about the reason i explained

i hope you guys know that,


thanks
regards

hi guys thanks for replying

Why do you want to change it? Have you posted confidential material?

reason that i want to delete my post is because i just need to remove or edit part of my code that i've posted, like you said i've posted code that i should not posted i just want to edit part of my code or remove it
i hope you guys understand because i need it thanks

thanks hopefully you could help me

hi moderator

could you please help me to edit or remove my last post about this

https://coderanch.com/t/582813/JDBC/java/ORA-non-numeric-character-was

because i need to re edit about my code that ive posted before


thnks for your kindness

help me as soon as possible

hi dear

btw how could i edit or remove the question that i've ever posted on this forum because i need to edit or remove my question for some reason


help me please

thanks in advance

hi Martin,,

thanks for helping me by the way, and you're right the exception happened because of The Date i've fixed it and it works,,
thanks for Gave me the solution

once more thanks

gb

Hi Martin Thanks for replied

any way here is the Exception

Caused by: java.sql.SQLException: ORA-01858: a non-numeric character was found where a numeric was expected
ORA-06512: at "MYDB.MYPROCEDURE", line 24
ORA-06512: at line 1

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:743)
at oracle.jdbc.driver.T4CCallableStatement.doOall8(T4CCallableStatement.java:215)
at oracle.jdbc.driver.T4CCallableStatement.executeForRows(T4CCallableStatement.java:954)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1169)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3285)
at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:3390)
at oracle.jdbc.driver.OracleCallableStatement.execute(OracleCallableStatement.java:4223)
...

so are this exception comes up because error when inserting Date?