Java String: replaceAll() Method
public String replaceAll(String regex, String replacement)
The replaceAll() method replaces each substring of this string that matches the given regular expression with the given replacement.
An invocation of this method of the form str.replaceAll(regex, repl) yields exactly the same result as the expression
Pattern.compile(regex).matcher(str).replaceAll(repl)
Note that backslashes (\) and dollar signs ($) in the replacement string may cause the results to be different than if it were being treated as a literal replacement string; see Matcher.replaceAll. Use Matcher.quoteReplacement(java.lang.String) to suppress the special meaning of these characters, if desired.
Java Platform: Java SE 8
Syntax:
replaceAll(String regex, String replacement)
Parameters:
Name | Description | Type |
---|---|---|
regex | the regular expression to which this string is to be matched | String |
replacement | the string to be substituted for each match | String |
Return Value:The resulting String
Return Value Type: String
Pictorial presentation of Java String replaceAll() Method
Example: Java String replaceAll(String regex, String replacement) Method
The following example shows the usage of java String() method.
public class StringReplaceAllExample {
public static void main(String[] args) {
// Declare the source string
String stringVal = "10010011";
// Define the regex pattern
String regex = "0";
// Replacing all the occurrences of String "0"
String objStr = stringVal.replaceAll("0", "*");
System.out.println();
System.out.println("Original String Object: "+stringVal);
System.out.println("New String Object: "+objStr);
System.out.println();
}
}
Output:
Original String Object: 10010011 New String Object: 1**1**11
Java Code Editor :
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