Java Reference
In-Depth Information
appendTail(StringBuffer)
Appends text after the last match (normally used after
appendReplacement
).
Example 4-3
shows use of these three methods.
Example 4-3. ReplaceDemo.java
/**
* Quick demo of RE substitution: correct U.S. 'favor'
* to Canadian/British 'favour', but not in "favorite"
* @author Ian F. Darwin, http://www.darwinsys.com/
*/
public
public class
class
ReplaceDemo
ReplaceDemo
{
public
public static
static
void
void
main
(
String
[]
argv
) {
// Make an RE pattern to match as a word only (\b=word boundary)
String patt
=
"\\bfavor\\b"
;
// A test input.
String input
=
"Do me a favor? Fetch my favorite."
;
System
.
out
.
println
(
"Input: "
+
input
);
// Run it from a RE instance and see that it works
Pattern r
=
Pattern
.
compile
(
patt
);
Matcher m
=
r
.
matcher
(
input
);
System
.
out
.
println
(
"ReplaceAll: "
+
m
.
replaceAll
(
"favour"
));
// Show the appendReplacement method
m
.
reset
();
StringBuffer sb
=
new
new
StringBuffer
();
System
.
out
.
print
(
"Append methods: "
);
while
while
(
m
.
find
()) {
// Copy to before first match,
// plus the word "favor"
m
.
appendReplacement
(
sb
,
"favour"
);
}
m
.
appendTail
(
sb
);
// copy remainder
System
.
out
.
println
(
sb
.
toString
());
}
}
Sure enough, when you run it, it does what we expect:
