Java programming Exercises: Find a string that has a p followed by anything, ending in q
Java Regular Expression: Exercise-5 with Solution
Write a Java program that matches a string that has a 'p' followed by anything, ending in 'q'.
Sample Solution:
Java Code:
import java.util.Scanner;
public class test {
public static void main(String[] args) {
System.out.println(validate("phkuyrt"));
System.out.println(validate("pq"));
System.out.println(validate("pccddbbjjjq"));
System.out.println(validate("Jar"));
System.out.println(validate("pjhut"));
}
public static String validate(String text) {
if (text.matches("p.*?q$"))
return "Found a match!";
else
return "Not matched!";
}
}
Sample Output:
Not matched! Found a match! Found a match! Not matched! Not matched!
Pictorial Presentation:
Flowchart :
Java Code Editor:
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Previous: Find the sequences of one upper case letter followed by lower case letters.
Next: Check a word containing the character g in a given string.
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Java: Tips of the Day
What is the best way to filter a Java Collection?
Java 8 (2014) solves this problem using streams and lambdas in one line of code:
List<Person> beerDrinkers = persons.stream() .filter(p -> p.getAge() > 16).collect(Collectors.toList());
Use Collection#removeIf to modify the collection in place. (Notice: In this case, the predicate will remove objects who satisfy the predicate):
persons.removeIf(p -> p.getAge() <= 16);
lambdaj allows filtering collections without writing loops or inner classes:
ListbeerDrinkers = select(persons, having(on(Person.class).getAge(), greaterThan(16)));
Ref: https://bit.ly/3uwYid6
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