El método appendTail(StringBuilder) de Matcher Class se comporta como un método de agregar y reemplazar. Este método lee la string de entrada y la agrega al StringBuilder dado en la posición final.
Sintaxis:
public StringBuilder appendTail(StringBuilder builder)
Parámetros: este método toma un generador de parámetros que es el StringBuilder que almacena la string de destino.
Valor de retorno: este método devuelve un StringBuilder con la string de destino reemplazada.
Los siguientes ejemplos ilustran el método Matcher.appendTail():
Ejemplo 1:
// Java code to illustrate appendTail() method
import java.util.regex.*;
public class GFG {
public static void main(String[] args)
{
// Get the regex to be checked
String regex = "(Geeks)";
// Create a pattern from regex
Pattern pattern = Pattern.compile(regex);
// Get the String to be matched
String stringToBeMatched
= "GeeksForGeeks Geeks for For Geeks Geek";
// Create a matcher for the input String
Matcher matcher
= pattern.matcher(stringToBeMatched);
System.out.println("Before Replacement: "
+ stringToBeMatched);
// Get the String to be replaced
String stringToBeReplaced = "GFG";
StringBuilder builder = new StringBuilder();
// Replace every matched pattern
// with the target String
while (matcher.find()) {
matcher
.appendReplacement(builder,
stringToBeReplaced);
}
// Add the replaced string at the tail
// using the appendTail() method
matcher.appendTail(builder);
// Print the replaced matcher
System.out.println("After Replacement: "
+ builder.toString());
}
}
Producción:
Before Replacement: GeeksForGeeks Geeks for For Geeks Geek After Replacement: GFGForGFG GFG for For GFG Geek
Ejemplo 2:
// Java code to illustrate appendTail() method
import java.util.regex.*;
public class GFG {
public static void main(String[] args)
{
// Get the regex to be checked
String regex = "(FGF)";
// Create a pattern from regex
Pattern pattern
= Pattern.compile(regex);
// Get the String to be matched
String stringToBeMatched
= " FGF GFG GFG FGF";
// Create a matcher for the input String
Matcher matcher
= pattern.matcher(stringToBeMatched);
System.out.println("Before Replacement: "
+ stringToBeMatched);
// Get the String to be replaced
String stringToBeReplaced = "Geeks";
StringBuilder builder = new StringBuilder();
// Replace every matched pattern
// with the target String
while (matcher.find()) {
matcher
.appendReplacement(builder,
stringToBeReplaced);
}
// Add the replaced string at the tail
// using the appendTail() method
matcher.appendTail(builder);
// Print the replaced matcher
System.out.println("After Replacement: "
+ builder.toString());
}
}
Producción:
Before Replacement: FGF GFG GFG FGF After Replacement: Geeks GFG GFG Geeks
Referencia: https://docs.oracle.com/javase/9/docs/api/java/util/regex/Matcher.html#appendTail-java.lang.StringBuilder-
Publicación traducida automáticamente
Artículo escrito por Kirti_Mangal y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA