How does the replaceAll java method work?
I'm trying to figure out how the str.replaceAll(string, newString) method works. I know how to use it, but I'm trying to figure out what goes on inside the method. Does it use multiple for loops and strings, or something more advanced than that? Ideas, pseudocode, and code examples would be lovely.
PS I've already searched this up, but it only shows how to use it, not how it works.
java string
edited Nov 20 at 23:38
GBlodgett
8,87741531
asked Nov 20 at 22:58
bob larry
1
|
show 2 more comments
I'm trying to figure out how the str.replaceAll(string, newString) method works. I know how to use it, but I'm trying to figure out what goes on inside the method. Does it use multiple for loops and strings, or something more advanced than that? Ideas, pseudocode, and code examples would be lovely.
PS I've already searched this up, but it only shows how to use it, not how it works.
java string
edited Nov 20 at 23:38
GBlodgett
8,87741531
asked Nov 20 at 22:58
bob larry
1
1
Related: stackoverflow.com/questions/261015/…
– Michael Butscher
Nov 20 at 22:59
Pore over the source code ofString#replaceAll, debug some places to figure it out :)
– Andrew Tobilko
Nov 20 at 23:00
2
I you use an IDE you can easily see the code, LIke with intelliJ with pressctrland click on the method name to see the implementation
– azro
Nov 20 at 23:02
@azro - you can also just middle-click on any object, method, etc.
– Zephyr
Nov 20 at 23:03
@Zephyr not sure we need to discuss all shorcut that exists ^^ :D
– azro
Nov 20 at 23:03
|
show 2 more comments
I'm trying to figure out how the str.replaceAll(string, newString) method works. I know how to use it, but I'm trying to figure out what goes on inside the method. Does it use multiple for loops and strings, or something more advanced than that? Ideas, pseudocode, and code examples would be lovely.
PS I've already searched this up, but it only shows how to use it, not how it works.
java string
edited Nov 20 at 23:38
GBlodgett
8,87741531
asked Nov 20 at 22:58
bob larry
1
I'm trying to figure out how the str.replaceAll(string, newString) method works. I know how to use it, but I'm trying to figure out what goes on inside the method. Does it use multiple for loops and strings, or something more advanced than that? Ideas, pseudocode, and code examples would be lovely.
PS I've already searched this up, but it only shows how to use it, not how it works.
java string
java string
edited Nov 20 at 23:38
GBlodgett
8,87741531
asked Nov 20 at 22:58
bob larry
1
edited Nov 20 at 23:38
GBlodgett
8,87741531
asked Nov 20 at 22:58
bob larry
1
edited Nov 20 at 23:38
GBlodgett
8,87741531
edited Nov 20 at 23:38
GBlodgett
8,87741531
edited Nov 20 at 23:38
GBlodgett
8,87741531
8,87741531
asked Nov 20 at 22:58
bob larry
1
asked Nov 20 at 22:58
bob larry
1
asked Nov 20 at 22:58
bob larry
1
1
1
Related: stackoverflow.com/questions/261015/…
– Michael Butscher
Nov 20 at 22:59
Pore over the source code ofString#replaceAll, debug some places to figure it out :)
– Andrew Tobilko
Nov 20 at 23:00
2
I you use an IDE you can easily see the code, LIke with intelliJ with pressctrland click on the method name to see the implementation
– azro
Nov 20 at 23:02
@azro - you can also just middle-click on any object, method, etc.
– Zephyr
Nov 20 at 23:03
@Zephyr not sure we need to discuss all shorcut that exists ^^ :D
– azro
Nov 20 at 23:03
|
show 2 more comments
1
Related: stackoverflow.com/questions/261015/…
– Michael Butscher
Nov 20 at 22:59
Pore over the source code ofString#replaceAll, debug some places to figure it out :)
– Andrew Tobilko
Nov 20 at 23:00
2
I you use an IDE you can easily see the code, LIke with intelliJ with pressctrland click on the method name to see the implementation
– azro
Nov 20 at 23:02
@azro - you can also just middle-click on any object, method, etc.
– Zephyr
Nov 20 at 23:03
@Zephyr not sure we need to discuss all shorcut that exists ^^ :D
– azro
Nov 20 at 23:03
1
1
Related: stackoverflow.com/questions/261015/…
– Michael Butscher
Nov 20 at 22:59
Related: stackoverflow.com/questions/261015/…
– Michael Butscher
Nov 20 at 22:59
Pore over the source code of
String#replaceAll, debug some places to figure it out :)– Andrew Tobilko
Nov 20 at 23:00
Pore over the source code of
String#replaceAll, debug some places to figure it out :)– Andrew Tobilko
Nov 20 at 23:00
2
2
I you use an IDE you can easily see the code, LIke with intelliJ with press
ctrl and click on the method name to see the implementation– azro
Nov 20 at 23:02
I you use an IDE you can easily see the code, LIke with intelliJ with press
ctrl and click on the method name to see the implementation– azro
Nov 20 at 23:02
@azro - you can also just middle-click on any object, method, etc.
– Zephyr
Nov 20 at 23:03
@azro - you can also just middle-click on any object, method, etc.
– Zephyr
Nov 20 at 23:03
@Zephyr not sure we need to discuss all shorcut that exists ^^ :D
– azro
Nov 20 at 23:03
@Zephyr not sure we need to discuss all shorcut that exists ^^ :D
– azro
Nov 20 at 23:03
|
show 2 more comments
1 Answer
1
active
oldest
votes
According to the source code for String#replaceAll:
public String replaceAll(String regex, String replacement) {
return Pattern.compile(regex).matcher(this).replaceAll(replacement);
}
It creates a Pattern and uses regex to replace the target with the replacement.
In case you want to know about the Matcher#replaceAll call:
public String replaceAll(String replacement) {
reset();
boolean result = find();
if (result) {
StringBuffer sb = new StringBuffer();
do {
appendReplacement(sb, replacement);
result = find();
} while (result);
appendTail(sb);
return sb.toString();
}
return text.toString();
}
answered Nov 20 at 23:04
GBlodgett
8,87741531
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
According to the source code for String#replaceAll:
public String replaceAll(String regex, String replacement) {
return Pattern.compile(regex).matcher(this).replaceAll(replacement);
}
It creates a Pattern and uses regex to replace the target with the replacement.
In case you want to know about the Matcher#replaceAll call:
public String replaceAll(String replacement) {
reset();
boolean result = find();
if (result) {
StringBuffer sb = new StringBuffer();
do {
appendReplacement(sb, replacement);
result = find();
} while (result);
appendTail(sb);
return sb.toString();
}
return text.toString();
}
answered Nov 20 at 23:04
GBlodgett
8,87741531
add a comment |
According to the source code for String#replaceAll:
public String replaceAll(String regex, String replacement) {
return Pattern.compile(regex).matcher(this).replaceAll(replacement);
}
It creates a Pattern and uses regex to replace the target with the replacement.
In case you want to know about the Matcher#replaceAll call:
public String replaceAll(String replacement) {
reset();
boolean result = find();
if (result) {
StringBuffer sb = new StringBuffer();
do {
appendReplacement(sb, replacement);
result = find();
} while (result);
appendTail(sb);
return sb.toString();
}
return text.toString();
}
answered Nov 20 at 23:04
GBlodgett
8,87741531
add a comment |
According to the source code for String#replaceAll:
public String replaceAll(String regex, String replacement) {
return Pattern.compile(regex).matcher(this).replaceAll(replacement);
}
It creates a Pattern and uses regex to replace the target with the replacement.
In case you want to know about the Matcher#replaceAll call:
public String replaceAll(String replacement) {
reset();
boolean result = find();
if (result) {
StringBuffer sb = new StringBuffer();
do {
appendReplacement(sb, replacement);
result = find();
} while (result);
appendTail(sb);
return sb.toString();
}
return text.toString();
}
answered Nov 20 at 23:04
GBlodgett
8,87741531
According to the source code for String#replaceAll:
public String replaceAll(String regex, String replacement) {
return Pattern.compile(regex).matcher(this).replaceAll(replacement);
}
It creates a Pattern and uses regex to replace the target with the replacement.
In case you want to know about the Matcher#replaceAll call:
public String replaceAll(String replacement) {
reset();
boolean result = find();
if (result) {
StringBuffer sb = new StringBuffer();
do {
appendReplacement(sb, replacement);
result = find();
} while (result);
appendTail(sb);
return sb.toString();
}
return text.toString();
}
answered Nov 20 at 23:04
GBlodgett
8,87741531
edited Nov 20 at 23:11
answered Nov 20 at 23:04
GBlodgett
8,87741531
answered Nov 20 at 23:04
GBlodgett
8,87741531
answered Nov 20 at 23:04
GBlodgett
8,87741531
8,87741531
add a comment |
add a comment |
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1
Related: stackoverflow.com/questions/261015/…
– Michael Butscher
Nov 20 at 22:59
Pore over the source code of
String#replaceAll, debug some places to figure it out :)– Andrew Tobilko
Nov 20 at 23:00
2
I you use an IDE you can easily see the code, LIke with intelliJ with press
ctrland click on the method name to see the implementation– azro
Nov 20 at 23:02
@azro - you can also just middle-click on any object, method, etc.
– Zephyr
Nov 20 at 23:03
@Zephyr not sure we need to discuss all shorcut that exists ^^ :D
– azro
Nov 20 at 23:03