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java.util.regex.Matcher.appendReplacement()
Description
The java.time.Matcher.appendReplacement(StringBuffer sb, String replacement) method implements a non-terminal append-and-replace step.
Declaration
Following is the declaration for java.time.Matcher.appendReplacement(StringBuffer sb, String replacement) method.
public Matcher appendReplacement(StringBuffer sb, String replacement)
Parameters
sb − The target string buffer.
replacement − The replacement string.
Return Value
This matcher.
Exceptions
IllegalStateException − If no match has yet been attempted, or if the previous match operation failed.
IllegalArgumentException − If the replacement string refers to a named-capturing group that does not exist in the pattern.
IndexOutOfBoundsException − If the replacement string refers to a capturing group that does not exist in the pattern.
Example
The following example shows the usage of java.time.Matcher.appendReplacement(StringBuffer sb, String replacement) method.
package com.tutorialspoint; import java.util.regex.Matcher; import java.util.regex.Pattern; public class MatcherDemo { private static String REGEX = "a*b"; private static String INPUT = "aabfooaabfooabfoob"; private static String REPLACE = "-"; public static void main(String[] args) { Pattern pattern = Pattern.compile(REGEX); // get a matcher object Matcher matcher = pattern.matcher(INPUT); StringBuffer buffer = new StringBuffer(); while(matcher.find()) { matcher.appendReplacement(buffer, REPLACE); } matcher.appendTail(buffer); System.out.println(buffer.toString()); } }
Let us compile and run the above program, this will produce the following result −
-foo-foo-foo-