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Pattern UNIX_LINES field in Java with Examples
This flag enables Unix lines mode. In the Unix lines mode, only '\n' is used as a line terminator and ‘\r’ is treated as a literal character.
Example 1
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class LTERAL_Example {
public static void main(String[] args) {
String input = "This is the first line\r"
+ "This is the second line\r"
+ "This is the third line\r";
//Regular expression to accept date in MM-DD-YYY format
String regex = "^T.*e";
//Creating a Pattern object
Pattern pattern = Pattern.compile(regex, Pattern.UNIX_LINES);
//Creating a Matcher object
Matcher matcher = pattern.matcher(input);
int count = 0;
while(matcher.find()) {
count++;
System.out.println(matcher.group());
}
System.out.println("Number of matches: "+count);
}
}
Output
This is the first line This is the second line This is the third line Number of matches: 1
Whereas in normal mode \r is treated as carriage-return.
Example 2
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class LTERAL_Example {
public static void main(String[] args) {
String input = "This is the first line\r"
+ "This is the second line\r"
+ "This is the third line\r";
//Regular expression to accept date in MM-DD-YYY format
String regex = "^T.*e";
//Creating a Pattern object
Pattern pattern = Pattern.compile(regex);
//Creating a Matcher object
Matcher matcher = pattern.matcher(input);
int count = 0;
while(matcher.find()) {
count++;
System.out.println(matcher.group());
}
System.out.println("Number of matches: "+count);
}
}
Output
This is the first line Number of matches: 1
Updated on: 07-Dec-2023
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