Regular expression to accept only digits
This regular expression refers to a pattern which accepts only digits.
Example
package com.w3spoint;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class RegexTest {
private static final String PATTERN = "\d+$";
public static void main(String args[]){
List<String> values = new ArrayList<String>();
values.add("Jai");
values.add("12345345");
values.add("1234567890");
Pattern pattern = Pattern.compile(PATTERN);
for (String value : values){
Matcher matcher = pattern.matcher(value);
System.out.println(matcher.matches());
}
}
} |
package com.w3spoint; import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern; public class RegexTest {
private static final String PATTERN = "\d+$";
public static void main(String args[]){
List<String> values = new ArrayList<String>();
values.add("Jai");
values.add("12345345");
values.add("1234567890");
Pattern pattern = Pattern.compile(PATTERN);
for (String value : values){
Matcher matcher = pattern.matcher(value);
System.out.println(matcher.matches());
}
}
}
Output