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Write a Java Program to Calculate the intersection of two sets
PROGRAM: Java Program to Calculate the intersection of two sets
/*Java Program to Calculate the intersection of two sets*/
1: Calculate the intersection of two sets
import java.util.HashSet;
import java.util.Set;
class Main {
public static void main(String[] args) {
// create first set
Set<Integer> primeNumbers = new HashSet<>();
primeNumbers.add(2);
primeNumbers.add(3);
System.out.println(“Prime Numbers: ” + primeNumbers);
// create second set
Set<Integer> evenNumbers = new HashSet<>();
evenNumbers.add(2);
evenNumbers.add(4);
System.out.println(“Even Numbers: ” + evenNumbers);
// Intersection of two sets
evenNumbers.retainAll(primeNumbers);
System.out.println(“Intersection: ” + evenNumbers);
}
}
2: Get union of two sets using Guava Library
import java.util.HashSet;
import java.util.Set;
import com.google.common.collect.Sets;
class Main {
public static void main(String[] args) {
// create the first set
Set<String> backend = new HashSet<>();
backend.add(“Java”);
backend.add(“JavaScript”);
System.out.println(“Backend Languages: ” + backend);
// create second set
Set<String> frontend = new HashSet<>();
frontend.add(“JavaScript”);
frontend.add(“CSS”);
System.out.println(“Frontend Languages: ” + frontend);
Set<String> intersect = Sets.intersection(backend, frontend);
System.out.println(“Common Languages: ” + intersect);
}
}
