I'm trying to convert Unix-style line-endings (LF) in a multi-line string to Windows-style (CR LF).
My plan of attack is to:
replace all CR LF instances with just LF
then replace all LF instances with CR LF
However, this snippet of code isn't matching the "\r\n":
String test = "test\r\ncase";
test.replaceAll("\r\n","\n");
PrintWriter testFile = new PrintWriter("test.txt");
testFile.print(test);
testFile.close();
I've already tried using double/triple/quadruple backslashes. No dice.
I also know that the test string doesn't contain a literal \r\n because it detects them as CR LF when printing to file.
What am I missing here?
You are not gettign the modified String from your code.
String are immutable so you need to save the returned value from replaceAll. There is no method that can change an instance of String
String test = "test\r\ncase";
//Print the character before
for(char c : test.toCharArray()){ System.out.print((int)c + " ");};
System.out.println();
//Save the replace result
test = test.replaceAll("\r\n","\n");
//Print the character after
for(char c : test.toCharArray()){ System.out.print((int)c + " ");};
Show that the test is first not changed then changed
116 101 115 116 13 10 99 97 115 101 //BEFORE
116 101 115 116 10 99 97 115 101 //AFTER
Related
I have a String which is :
PRESIÓN MÁXIMA:
This string is in ISO-8859, I want to write it in an xml UTF-8 file :
I get its UTF-8 bytes values which seems good :
-61, -109 = C3 93 = Ó
-61, -127 = C3 81 = Á
But when I turn back this array of bytes into a String, the Ó is OK, but not the Á :
For some unknown reason the C3 81 become a C3 3F
There is something that I dont understand with encoding, at least I would expect both character to be wrong.
How can I fix / convert my String ?
I need to convert a text string to an WinANSIEncoding compliant (Windows code page 1252) octal string (using Java).
"André" should become "101 156 144 162 351" or "\101\156\144\162\351".
I could use a simple string search and replace for each character in the list of allowed characters, but this would probably not be the fastest solutions.
Does anyone know how this should be done?
Thanx
TM
Ps
https://cryptii.com/text-octal
The toOctalString(int i) will help :
Using Streams
String str ="André";
String toOctal = str.chars().boxed().map(Integer::toOctalString)
.collect(Collectors.joining(" "));
System.out.println(toOctal); // 101 156 144 162 351
Workable Demo
Basic loop
String str ="André";
String toOctal ="";
for(char c : str.toCharArray()){
toOctal += Integer.toOctalString(c)+" ";
}
System.out.println(toOctal);
I have seen so many examples online but they are not exactly what Im looking for.
I have a .bin file that I'd like to POST to a server, so I am encoding and storing it as a string.
However, decoding it doesn't give the same result.
import org.apache.commons.codec.binary.Base64;
File file = getFileStreamPath(ENROLL_FILENAME);
byte[] bytes = loadFile(file);
byte[] encoded = Base64.encodeBase64(bytes);
for(int i =0; i< encoded.length; i++){
System.out.print(encoded[i]);
}
System.out.println();
String encodedString = new String(encoded); //send to sever and decode
System.out.println("Encode "+ encodedString);
byte[] decoded = Base64.decodeBase64(encodedString.getBytes());
for(int i =0; i< decoded.length; i++){
System.out.print(decoded[i]);
}
System.out.println();
Result:
System.out: 1147948656688781216567661069850481179071904876109571171018810311782109108117905086121997274112981108285908749119987170489081656565656565656565666511965678710365769951100112904878789087498010050537565651041221005010811081496648991101041191011036565666565656567122119891035265658065115656565686565656511081736565757366656565706565656565656565656565656565661016881656583857712010311971576582896765119491017310369786574119798181658665676580886569866574107788465658765661038082119698965748977756569906573119781148169976580115751026569986577657448103659965736578886569996566697811610369102657273755310365103656548781181036510465658579104656910565777374122119651086565527811281691086572107707165691106565119794365651126573897855656511465651157790656911465746979791196911865668178103816911965795675656569122656669787465691226566107795511965496574737768103694965668179841036550657473798811965516566103808465695365747778108119695365806573104816554656511580102656954656681759010369576566567886119666665737379831197066656765789711966686574103805211966736573111809065707665678979101103668165666980115103708365785677856570886567997970816697657289789011966976573858011381709965767378838166102656510779708166103656910778791196610465651077885817010465686580741036610665801117610265701096568657779103701146575698080656611565678178861196611565668979119103661156565119801001196611665737378107119661166573568097816612065658178978170122656885801121197050657665791081196653657248789065665565655276102119665565731077767103705665686980103817043657673801038167676580103777011971676568858011465717165688579122816772657399785011967776574737810211971776568103791068171806576997953119678265705278571036783656948808910371836568568010311967856573817610981718965699977100119679065805277111657197656973771161036798657377781161036710465801197811410371109656965797665671126566898085816711265756580108657111565778178791037111765777380106656712065657378102817112165698979110119711226577737869656756656777801066567476565103791101036865656565781148168656572737789103726665778980100816867656665805565686965711118011781687065738978120816872657252784881687665727780110816878657356791076572786577857976119688165655280114817281656969767711972876570111809711968906573103751011196890657369768481689965731157811365689965721118010211972996577107808010372104657873808511968106657277781081196810665728579116103721086574487376103681096567111798811968109657211177801036811265714879701196811365688980891197211765781038010110368118657156771076572118657077751001197248657811579731036851657552797910368536579107791141197257656910373821036843658069797065724765796580578165676510185801066569686585697487816971651018179901196972658611179761036574651004879114816977651006977688269817268798174105756874476571675081737353717976897773778950101661211017370876968701201077373101479067431225273759771741127765767454877010184577010275707110654677250107756897721197086101657110611212272821005267112113746811643677411652767511848536757514370118102827283103118721196711567854912170651041227088905572104864966121575269901176570102100557371538267113785169111685375727567771111211196890566770739772708011778705478556989885170887170757211452765284546749115676810310284718111711772117768367844379691021197471711076672110111686811770436911810772101103656566656589897310710410555998210880778212210210386865265985210211577995111578725185808680818510688107751138810777981118578731025287104102111821095265837551738811110210399871185285103111698853102115891064781978172527653781157987105488783675689111102567870731157910010248825411056874711989826611948875211985888965859776894875111111998012165119825489698782811037956103778282811038797801159065735279691046582568811110347471111031147211178120748982105736582545289107110537773771107785103515697565181995065738973656989978899986857119101786752901218011199547277109438077115497389768012185875347859079867398971218179112471078372895287886511597535211978501091117911111865856511711110174474873748948881084710789651191199899801118210573658566899985986689887612077871221021031011191105610751881071081
System.out: Encode 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
System.out: -84-19051151140329911110946100102116461111101211204670105110103101114112114105110116841011091121089711610100000001302900111151191051036777101109791191107408115119105103678011611412011212200400044-16981400-1644003000-99200-94100500000000000941300736749-1251-67122231394341130-100146502103215921210-103137602202415711240-10612401250-11613-831260-5101241270-649-460280-128139212801713-74131011410-2603201313-660330514-1241340-629-4903701413-91137012152413901214-80410-12213-20043011121001430-111145914702013-1271480-17100151017133615102514-170530-110121415302014780540-110149505502415761570-10913-1051570-168-123058011151241580201010216103113870650-1261475165032131070670-10415-290720-118151001750381412208001715-781820-33128018703914210900118131030900-12315-871920-781373095091421096073135909709138119704815380990-6111241102048125811070-95156001080361387010802214-6201080121511901090-12613-10901090-1131510501130413105111505315-8911180-8014-105012101251310001230141112701230-1191210112404915-12711260-7815-1270-1260-812231-12605315-841-12205314-510-1210-12113-370-1160-110131271-11605614-1151-1130-7314-250-11109413-100-11007715981-11006315-1250-1080-12411-1031-104071121190-1030-212-961-10206612-740-1010-12513-740-950-413-821-9006414440-8702215810-870-9615-1081-840-6013581-820-6215-1160-7902131251-7807014-971-770-6213160-6803515-1160-650814-980-640013-830-64011412981-630-58151170-6201615-200-60010615-710-590-12213-590-57012613-470-53011515-990-510-11314-1121-510-5914470-4801415-831-4806511511-42090151070-390-120101230-390-12711770-360-11713-880-360122151271-360-5515621-310-4615830-29011513-1050-29011714-741-270-998460-2604214950-26012212620-23010914230-2205415991-180-40151220-17011112-1121-17083101191-120-3714340-90-8214580-70-2314-811-30728700-20-1514201-10-3215-11021-2715-11613165989161-2814103171901446091-3514-831121-47121317162851-1123834-12539-16611100835-111-11445-125849-115-98739-120219732325833-17-3911-20-832-90-12238-109044-98-10621-28-321-14-1232662-126311051013-95-162187-1282658115292312010-102-11914-33-12638-341142-35711-35-222-9-47294047310-8497711420811521118123302111774712017-101-12821-9123321108110-9311918-128-740114-12650-116-8013-97220-122-12120-5-11523-9312317-123-921113-12340122-847-124-611912147-452511-8230-30-46963-11417-4924105130122314-3112618-7712200402496-11933-117-7317-108-1317-51-82187-12827-31-51211512313311171584-1220-11512110-8712112110-1231333-222-123-617-101-128184311423-95-82890-220-126-12723-27-524-113-12266412611-28-3714904522724724-95-11320-11714117-317-2212722-161771322-295239652645-11510-94-12115-561217-23-1272269814-1431769822104-5250-11414181617-1512232-1-632-8412213-60-10617-120-12817-21-12236-97-10985011520-12512726-1311628-40224321241051192715-3630524625-56-628-2411538-8-1344-44-12211633722-25-11255782271073614-89-71829-11422921126-25-11613-3810614-94-16202-223039-3837-11523-105-72431227112-617-120-128205-121201082223471922-51-830-6212736-3512137-5041432723-60-127-22629-73-10201212121-37-1162566629-77-11313-1453764-1738-1947478610210-107-9231672367130-69-122674451930124391810943288221-251162356-12723-62-19248911113-84-452617239123-62421112514-15018-41-2719-106-1330112-1246-9-4517627938566441673711-77-2714113021-131530-122-131012925-65-11329451030106-51713-791926-12421-126-1524-106-4223-72-525-12012636-131038-115-825-5011330-63122427110845-81-12711242718602724-204227921419117181991320-11582472-11129-92-12341-10312245-24-11347-13125151151261641-72344-11824100116133618248862878-105281131311-49-1015113-126197-182357127235152693-12530-27532-108-1017412326-109-23649-7372411013-74-1824115-12324-128-123493-71169102021-82488-11627114-123744-11116-94724-121224-119-1231497-430-83-2841-71-4550-62-97142012221-11-525-122-126269612576111118-6011623541182412012314-35437-71-244251-10850-65-4117-1-12323-95-1326-84-1832-119-11157-112884129-871233092413-252151241128-9694094151414-1221481-1272990-1530-64-7148212715-2911221112522-3311713-78-5215371728-79-4141124515-74-1728-68-69301728373324305773210103742-11542101-713108-12218-72-11625-74-53048-126769515-45-11221-125-1252581713114122258
Why are the byte arrays not the same?
I think they are the same. Note that the first line of your output is the encoded bytes, and 114 is the decimal ASCII code for 'r', 79 is the decimal ASCII code for 'O', 48 is the decimal ASCII code for '0' etc., so your first and second lines match and are what I'd expect given your code.
Then when you've decoded the values, the bytes are being sign-extended to ints, so -84 is actually 256 - 84 = 172, -19 is 256 - 19 = 237, 0 is 0, etc., and if you base64 decode the second line using command line tools:
$ base64 -d < x.bin | od -tu1 | head -2
0000000 172 237 0 5 115 114 0 32 99 111 109 46 100 102 116 46
0000020 111 110 121 120 46 70 105 110 103 101 114 112 114 105 110 116
You'll see things match. So I think everything's fine, it's just how and what you're printing that makes things look wrong.
As far as I see you print out encoded, encodedString and decoded but not bytes. Can you check bytewise whether your arrays are equal or not?
I have file with data format as
userid, friend id, books id, cd id
1, 11 12 14 12, 223 256 333 234 222, 22
2, 78 22, 22 66 11 29, 76 455
3, 123 22 11 234 198 122 881, 34 12 98 64, 22
where I need to use only user id and cd id, But I am unable to separate these fields.
My Java code as below.
BufferedReader in = new BufferedReader(new FileReader("CSV_test.txt"));
BufferedWriter ou =new BufferedWriter(new FileWriter("users.csv"));
String str;
str = in.readLine();
while ((str = in.readLine()) != null) {
String[] ar = str.split(",");
String[] ar1 = ar[1].split("");
ou.write(ar[0]);
ou.write(",");
ou.write(ar1[1]);
ou.newLine(); }
in.close();
ou.close();
}
Is there any issue with this?
Surely you want
String[] ar = str.split(",");
String user = ar[0].trim();
String cd = ar[3].trim();
Note that I'm trimming to remove leading/trailing spaces.
You could split using ", " (note the trailing space) and that would remove the need to further trim(). It does make some assumptions however as to how your fields are separated (commas ? commas-and-spaces?) and perhaps it's worth investigating a CSV library.
No need to reinvent the wheel. While CSV parsing is fairly simple, there are things that might be a little bit complicated (such as escaping the separator in field values). Existing libraries can do this for you, such as OpenCSV or CsvJdbc
Hii Guys !!!
I have a string with values like 69 17 17 16 2 1 1 26 26 56 56 69 20 19 20 etc .Now As per my need i have to put these values into new String with each values in new line as after each value space is there ..
Any help will be highly appreciated..
Thanx in advance...
String newStr = origStr.replaceAll(" ", " \n");
You should split the String using a specific separator into a List.
Then print out the List using the format required.
This helps when tomorow the String contains digits, decimals, text, etc or they want the text in another format.
String source = "69 17 17 16 2 1 1 26 26 56 56 69 20 19 20";
String[] splitted = source.split(" ");
StringBuilder sb = new StringBuilder();
for (String split : splitted){
sb.append(split).append(System.getProperty("line.separator"));
}
System.out.println(sb.toString());