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Write a Java Program to Calculate union of two sets
PROGRAM: Java Program to Calculate union of two sets
/*Java Program to Calculate union of two sets*/
1: Calculate the union of two sets using addAll()
import java.util.HashSet;
import java.util.Set;
class Main {
public static void main(String[] args) {
// create the first set
Set<Integer> evenNumbers = new HashSet<>();
evenNumbers.add(2);
evenNumbers.add(4);
System.out.println(“Set1: ” + evenNumbers);
// create second set
Set<Integer> numbers = new HashSet<>();
numbers.add(1);
numbers.add(3);
System.out.println(“Set2: ” + numbers);
// Union of two sets
numbers.addAll(evenNumbers);
System.out.println(“Union is: ” + numbers);
}
}
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> languages1 = new HashSet<>();
languages1.add(“Java”);
languages1.add(“Python”);
System.out.println(“Programming Languages: ” + languages1);
// create second set
Set<String> languages2 = new HashSet<>();
languages2.add(“English”);
languages2.add(“Spanish”);
System.out.println(“Human Language: ” + languages2);
Set<String> unionSet = Sets.union(languages1, languages2);
System.out.println(“Union is: ” + unionSet);
}
}
