Replacing substrings in a string.

I have three strings.
String one
String two
String three
String one is a substring occuring somewhere in String three.
I want to replace String one occuring in String three with String two.
How can i do this.
Please help.

Hi ,
you cannot replace the String but you can get the replaced String
for more information see the following links
http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html#replace(char, char)
http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html#replaceAll(java.lang.String, java.lang.String)
http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html#replaceFirst(java.lang.String, java.lang.String)
API in String class is
1. String replace(char oldChar, char newChar)
2. String replaceAll(String regex, String replacement)
3. String replaceFirst(String regex, String replacement)
the above three API returns the result but the original string cannot be changed.
If you want to change the original string use StringBuffer instead of String. for more detail for StringBuffer is see the following link
http://java.sun.com/j2se/1.4.2/docs/api/java/lang/StringBuffer.html

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Find and replace value in Delimited String

Hi All,
I have a requirement, where i need to find and replace values in delimited string.
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I thought of first devide the values and store it in variable and then after replacing it with required value, join it back.
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for example (Assumption: the abbreviated month is the first occurance of 3 consecutive alphabetic charachters)
with testdata as (
select 'GL~1001~157747~FEB-13~CREDIT~A~N~USD~NULL~' str from dual
select
str
,regexp_substr(str, '[[:alpha:]]{3}') part
,to_date('01'||regexp_substr(str, '[[:alpha:]]{3}')||'2013', 'DDMONYYYY') part_date
,replace (str
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) res
from testdata
STR
PART
PART_DATE
RES
GL~1001~157747~FEB-13~CREDIT~A~N~USD~NULL~
FEB
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GL~1001~157747~JAN-13~CREDIT~A~N~USD~NULL~
with year included
with testdata as (
select 'GL~1001~157747~JAN-13~CREDIT~A~N~USD~NULL~' str from dual
select
str
,regexp_substr(str, '[[:alpha:]]{3}-\d{2}') part
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,replace (str
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) res
from testdata
STR
PART
PART_DATE
RES
GL~1001~157747~JAN-13~CREDIT~A~N~USD~NULL~
JAN-13
01/01/2013
GL~1001~157747~DEC-12~CREDIT~A~N~USD~NULL~
Message was edited by: chris227 year included

Lua function to replace metatags in a string?

(Maybe this is a recipe request for the new cookbook site.)
I'd like a function that, given a string and a LrPhoto, will search and replace tags in the string with metadata from the photo. So, given a string 'The title of this photo is {{title}}', it would return a string where {{title}} has been replaced with the LrPhoto.getRawMetadata('title') (or maybe getFormattedMetadata). I'm sure it's been written more than once. Is there one out there to be shared before I write my own?
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I spent the time on this myself and don't know why I bothered asking, it was so simple. Here's what I did. First, a general-purpose function to replace any token in a string with values from a table:
-- replace any string of characters in a string that are surrounded by curly
-- braces (e.g. {foo}) with the value in the table corresponding to 'foo'.
-- will replace all tokens in braces if there are more than one
function DFB.replaceTokens( tokenTable, str )
return str:gsub( '{(.-)}', function( token ) return tokenTable[token] end )
end
Then, if you want to do this with a photo's metadata, just pass the table that's returned from getRaw/FormattedMetadata:
line = DFB.replaceTokens( photo:getFormattedMetadata( nil ) , line )
So if line starts out with "my caption is {caption}" and the photo's caption is 'My Photo Caption', the result is "my caption is My Photo Caption".
I use this in a simple templating system that reads an HTML template from a file and does this for each line as it reads/writes it. Works well.

Replacing 'word' in a string

Hi! I want to replace Strings in a String, but if the the substring which has to be replaced is not a word, then i don't want it to be replaced. Eg.: I want to replace Words for other strings, where words are not substring of other Words :)
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cu
athalay

But, my original question wasn't this. I
want to replace words(string) for other strings in
sentences(string). I hope it's clearer. So for example
I have a sentence: This is an applepie. And if I want
to replace apple for pear, then do not replace this
sentence for pearpie, just remain it, because there's
no "apple" word in this sentence. I hope it's clearer.
My main problem is, that handling the First word of
the sentence. It easy to replace " "+word+" " for what
I want, but there are separatorchars like , . etc :)Search for the word you want to replace. Once you have found it, you will need to do a series of other checks...
1) is it at the beginning or end of the sentence? (then you need to look at the character before or after the word depending on location in entire String to see if it is whitespace or separator character)
2) is it surrounded by whitespace or separator characters on both sides? (get the surrounding characters and compare to a list of acceptable characters to make this a word, ie " ", ",", ";"...
Only replace words that pass the conditions (beginning of sentence and followed by whitespace or separator, end of sentence and preceeded by whitespace or separator, or middle of sentence and surrounded by whitespace or separators).

How to use replace(CharacterSequence, CharacterSequence) in String class

Need simple java program using the following
how to use replace(CharacterSequence, CharacterSequence) in String class
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From http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html#replace(java.lang.CharSequence,%20java.lang.CharSequence)
replace
public String replace(CharSequence target,
CharSequence replacement)Replaces each substring of this string that matches the literal target sequence with the specified literal replacement sequence. The replacement proceeds from the beginning of the string to the end, for example, replacing "aa" with "b" in the string "aaa" will result in "ba" rather than "ab".
Parameters:
target - The sequence of char values to be replaced
replacement - The replacement sequence of char values
Returns:
The resulting string
Throws:
NullPointerException - if target or replacement is null.
Since:
1.5

CS3: grep search to replace part of a string

Can I do a grep search for a string of text but only replace a portion of the string while leaving the remainder intact?
iMac G5, OS 10.5.5

In addition to Eric:
Find "some search string", Replace "some replacement string " also replaces part of the string, not touching anything...
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Hi Guys,
I have an html string defined in property file.<html>,,,,,,<body>,,,,,blah blah $1 blah blah .........</html>
I have html and eg $1, $2 so on.
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but didnt work,
please help me replcing it,
thanks,

DrClap wrote:
It didn't work because that method takes a regular expression as its first parameter. (The API documentation does mention that fact.) The regular expression you passed it ("$1") ...The OP did escape the $, but \\ get eaten by the forum software as a new-line char.
@OP, the replaceFirst(...) returns a new String (and does not change the original String!), so you will have to do:
String s = "<html>,,,,,,<body>,,,,,blah blah $1 blah blah .........</html>";
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Find & replace part of a string in Numbers using do shell script in AppleScript

Hello,
I would like to set a search-pattern with a wildcard in Applescript to find - for example - the pattern 'Table 1::$*$4' for use in a 'Search & Replace script'
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Could anyone hand me a solution to this problem?
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Hi,
Here's how to do that:
try
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For what you want to do, you must have the wildcard in the same position in both string. --> find "Table 1::$*$3", replace "Table 1::$*$4"
Important, you can use no wildcard in both (the search string and the replacement string) or you can use any wildcard in the search string with no wildcard in the replacement string).
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How to replace special characters in string.

Hello,
I want to replace special characters such as , or ; with any other character or " ".I find out there is no such function is java for this.There is only replace() but it accepts only chars.If anybody know how to do this?.
Thanks,

Hello,
I want to replace special characters such as , or ;
with any other character or " ".I find out there is no
such function is java for this.There is only replace()
but it accepts only chars.If anybody know how to do
this?.
Thanks,Can't you just do the following?
public class Test
     public static void main(String[] args)
     String testString = "Hi, there?";
     System.out.println(testString.replace(',',' '));
}

Replace the text numbers string in a txt file using C++.. Help Me..

Read a Document and replace the text numbers in a txt file using c++..
For ex:
Before Document:
hai hello my daily salary is two thousand and five and your salary is five billion. my age is
twenty-five.
After Document:
hai hello my daily salary is # and your salary is #. my age is #.
All the text numbers and i put the # symbol..
I am trying this code:
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
ifstream myfile_in ("input.txt");
ofstream myfile_out ("output.txt");
string line;
void find_and_replace( string &source, string find, string replace ) {
size_t j;
for ( ; (j = source.find( find )) != string::npos ; ) {
source.replace( j, find.length(), replace );
myfile_out << source <<endl;
cout << source << endl;
int main () {
if (myfile_in.is_open())
int i = 0,j;
//string strcomma ;
// string strspace ;
while (! myfile_in.eof() )
getline (myfile_in,line);
string strcomma= "two";
string strspace = "#";
find_and_replace( line , strcomma , strspace );
i++;
myfile_in.close();
else cout << "Unable to open file(s) ";
system("PAUSE");
return 0;
Please help me.. Give me the correct code..

Open the file as a RandomAccessFile. Check its length. Declare a byte array as big as its length and do a single read to get the file into RAM.
Is this a simple text file (bytes)? No problem. If it's really 16-bit chars, use java.nio to first wrap the byte array as a ByteBuffer and then view the ByteBuffer as a CharBuffer.
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How count the number of substrings in a string

Hi all,
I wonder if someone can help me and point out where I'm going wrong.
I want to count the number of substring starting with 'd' and ending with 'e' in a string supplied by a user.
currently my code is only counting the number of 'd' and 'e' characters in the string.
    public static void main (String [] args)
         Scanner input = new Scanner (System.in);
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Can anyone shed some light on this for me thanks.

Hi all I had a good few replies to this question but they seem to have been removed from the system for some reason.
I've changed my code slightly and it works but only for one round of the guard.
               Scanner input = new Scanner (System.in)
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         int i = 0; // upstep variable
         int count = 0; // int variable to count the number of substrings
     System.out.print("Enter a string: ");
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         if (mstring.charAt(i) == 'd' && mstring.charAt(y-1)=='e'){count = count+1;}
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         i++;
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Can anyone tell me where I'm going wrong.
Thanks in advance

Replace characters in a string

Hi,
I need to replace all occurrences of control characters except space,newline,tabs in a string . I can give a replace statement for each of these characters but I want to avoid this by making use of regular expressions. Can anyone help me in this regard.
I tried using the following replace statements with regular expression, but i am not getting the required results:
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replace all occurrences of REGEX '[[:cntrl:]][^[:space:]]' in lv_char with space replacement count lv_count_r.
--> this replaced even some alpha numeric characters
Thanks and Regards,
Shankar

is there anyway to do this without using regular
expressions.. regular expressions are the last
solution for me..Remember that you can never really replace the characters of a String. Strings are immutable. Once created they cannot change.

Replacing characters in a string

I have an application where a user can enter information into a webform. I'm using JSP, but of course the backend there is a Java function also.
I am trying to write a function which will replace when the user hits enter with a <br> (break tag).
Right now it's a complicated, messy loop to look at each character and it has many flaws.
Is there a "replace" function that will do this for me?
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Nope compiler error
symbol : method replaceAll (java.lang.String,java.lang.String)
location: class java.lang.String
return (txt.replaceAll("\n","<br>"));

Problem in replacing characters of a string ?

Hello everybody,
I want to replace a few characters with their corresponding unicode codepoint values.
I have a userdefined method that gets the unicode codepoint value for a character.
1. I want to know how to replace the characters and have the replaced string after the comparision is over in the for loop in my main.
Currently , i am able to replace , but i am not able to have the replacements done in a single variable.
The output of the code is
e\u3006ame
ena\u3005e
But i want the output i require is,
e\u3006a\u3005e
Please offer some help in this regard
import java.io.*;
class Read1
     public static void main(String s[])
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         String tmp="ename";
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public static String replace(String source, String pattern, String replace)
     if (source!=null)
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         StringBuffer sb = new StringBuffer();
         int found = -1;
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khurram

This manual replacement thingy reminds me of quite an old technique, when
64KB of memory was considered enough for 20 users (at the same time that is!)
Suppose you have a buffer of, say, n characters. Starting at location i, a region
of chars have to be swapped with bytes starting at location j >= i+l_i; the lengths
of the two regions are l_i and l_j respectively.
Suppose the following method is available:public void reverse(char[] buffer, int f, int l_f) {
   for (int t= f+l_f; --t > f; f++) {
      char tmp=buffer[f]; buffer[f]= buffer[t]; buffer[t]= tmp;
}i.e. the above method reverses a region of characters, starting at position f
with length l_f. Given this simple method, the original problem can be solved
using the following simple sequence:reverse(buffer, i, j+l_j);
reverse(buffer, i, l_j);
reverse(buffer, i+l_j, j-i-l_i);
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kind regards,
Jos (dinosaurus)

Replacing a char with string in a string buffer.

Hi all,
I have a huge xml file. Need to search for the following characters: ^ & | \ and replace each character with \T\ \F\ \B\ \C\ respectively.
i.e. ^ must be replaced with \T\
& must be replaced with \F\
I see that it can be done in case of String using replaceAll() but have no clue about achieving using the stringbuffer??
Any help is higly appeciated.
Thanks in advance.

Hi all,
I have a huge xml file. Need to search for the
following characters: ^ & | \ and replace each
character with \T\ \F\ \B\ \C\ respectively.
i.e. ^ must be replaced with \T\
& must be replaced with \F\
I see that it can be done in case of String using
replaceAll() but have no clue about achieving using
the stringbuffer??
Any help is higly appeciated.
Thanks in advance.here the solution for your problem:
example code as follows,
     StringBuffer stringBuffer = new StringBuffer("your xml content");
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            for(int i=0; i<xmlCharArray.length; i++){
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                                   alteredXmlBuf.append(xmlCharArray);
now alteredXmlBuf StringBuffer object contains your solution.

Replacing substrings in a string.

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