Java - String String Replacing

Introduction

replace() method replaces an old character with a new character.

It returns a new String object by replacing all occurrences of the old character by the new character.

For example,

String oldStr = new String("tooth");

// o in oldStr will be replaced by e. newStr will contain "teeth"
String newStr = oldStr.replace('o', 'e');

Demo

public class Main {
  public static void main(String[] args) {
    String oldStr = new String("tooth");

    // o in oldStr will be replaced by e. newStr will contain "teeth"
    String newStr = oldStr.replace('o', 'e');

    System.out.println(oldStr);//from w w w . j  av  a 2 s  .co  m
    System.out.println(newStr);
  }
}

Result

Related Topics

• Replace String text with Regular Expressions

Exercise

• Write code to escape Quotes in a string
• Write code to replace Escape Sequence
• Write code to Convert space characters by underscore characters.
• Write code to replace All Substrings
• Write code to replaces 'origSub' with 'newSub' in the String 'orig'.
• Write code to replace Last Substring
• Write code to replace substring
• Write code to replace First match
• Write code to Given a string, replace all the instances of XML special characters with their corresponding XML entities.
• Write code to Replace all occurrences of pattern in the specified string with replacement.
• Write code to Search and replaces fixed string matches within the given string.
• Write code to replace All Empty space in a string
• Write code to design your algorithm to replace Chars inside a string
• Write code to replace substring in a string recursively
• Write code to replace substring only Once
• Write code to replace special characters that affect formatting with non-formatting character sequences.
• Write code to return a new string in which one search string is replaced by another.
• Write code to Replace last occurrence of given sub string
• Write code to Replace all whitespaces and non visible characters such as tab, \n with given string token.
• Write code to replace All substring by another substring using StringBuffer
• Write code to replace Whitespaces
• Write code to replace string using while loop and indexOf() method
• Write code to replace Blank in a string with regex
• Write code to replace a string only Once
• Write code to Replace the character in str at index with replacement.
• Write code to replace All Substrings recursively
• Write code to replace 'origSub' with 'newSub' in the String 'orig'.
• Write code to replace a string with substring and while loop
• Write code to remove all special characters by replacing
• Write code to Replace characters that may be confused by a HTML parser with their equivalent character entity references.
• Write code to replace Blank using regex
• Write code to Removes all punctuation Symbols of a given String.

• Previous
• Next