Java replace all square brackets in a string

Question

I want to remove square brackets from a string  but I don t know how   String str     Chrissman- 1    str   replaceAll                 String   temp   str split  -     System out println  Nickname      temp 0        Power      temp 1      But my result is   Chrissman   1  The square brackets doesn t get removed   I tried using a different regex                     d      but the result is the same  the square brackets still attached on the string   Edit   I tried   str replaceAll           str replaceAll             And now I m getting   Exception in thread  Thread-4  java util regex PatternSyntaxException  Unclosed character class near index 0         at java util regex Pattern error Unknown Source      at java util regex Pattern clazz Unknown Source      at java util regex Pattern sequence Unknown Source      at java util regex Pattern expr Unknown Source      at java util regex Pattern compile Unknown Source      at java util regex Pattern  lt init gt  Unknown Source      at java util regex Pattern compile Unknown Source      at java lang String replaceAll Unknown Source

User · Accepted Answer

The replaceAll method is attempting to match the String literal    which does not exist within the String try replacing these items separately   String str     Chrissman- 1    str   str replaceAll            replaceAll

User · Answer

use regex          -  String str     Chrissman- 1    String   temp   str replaceAll                 split  -     System out println  Nickname      temp 0        Power      temp 1      output -  Nickname  Chrissman   Power  1

User · Answer

Your regex matches  and removes  only subsequent square brackets  Use this instead   str   str replaceAll                   If you only want to replace bracket pairs with content in between  you could use this   str   str replaceAll                  1

User · Answer

x000D   x000D     Use this line   String result   strCurBal replaceAll      what ever u need to remove            x000D   x000D      String strCurBal       3428   x000D      Log e  Agilanbu before omit    strCurBal   x000D      String result   strCurBal replaceAll                    removing special characters from string x000D      Log e  Agilanbu after omit    result   x000D      x000D      o p   x000D      Agilanbu before omit      3428 x000D      Agilanbu after omit     3428 x000D   x000D      String finalVal   result replaceAll                  removing special characters from string x000D      Log e  Agilanbu finalVal     finalVal   x000D      o p x000D      Agilanbu finalVal   3428 x000D               x000D      String finalVal1   result replaceAll         -       insert   append   replace the special characters from string x000D      Log e  Agilanbu finalVal     finalVal1   x000D      o p x000D      Agilanbu finalVal   -3428     replacing the   symbol to - x000D   x000D   x000D

User · Answer

You may also do it like this   String data     yourdata    String regex              data    data  replaceAll regex       System out println data

User · Answer

You re currently trying to remove the exact string    - two square brackets with nothing between them  Instead  you want to remove all   and separately remove all     Personally I would avoid using replaceAll here as it introduces more confusion due to the regex part - I d use   String replaced   original replace          replace             Only use the methods which take regular expressions if you really want to do full pattern matching  When you just want to replace all occurrences of a fixed string  replace is simpler to read and understand    There are alternative approaches which use the regular expression form and really match patterns  but I think the above code is significantly simpler

User · Answer

String str  str1  Scanner sc   new Scanner System in    System out print  Enter a String       str   sc nextLine      str1   str replaceAll   aeiouAEIOU            System out print str1

[java] Java replace all square brackets in a string

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