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Judul : Union As Well As Intersection Of Ii Educate Inwards Coffee - Google Guava Example
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Union As Well As Intersection Of Ii Educate Inwards Coffee - Google Guava Example

Google Guava is an opened upward rootage library which provides lots of useful utility to Java programmer,  one of them is tardily means to notice intersection too spousal human relationship of 2 Set inwards Java. You mightiness bring used Google Guava for other functionality e.g. for overriding toString inwards tardily way or Immutable Collection provided past times Guava library. Along amongst Apache common too Spring, Google Guava is a library you lot definitely desire to include inwards your Project. Guava provides twain of static method to operate on Set inwards Java on bundle com.google.common.collect.Sets. There are 2 methods called intersection() too union() which provides intersection too spousal human relationship of 2 Sets inwards Java. In this instance nosotros bring used HashSet every bit Set implementation only it volition piece of job amongst whatever Set implementation e.g. TreeSet or LinkedHashSet.

How to notice Intersection too Union of 2 Set inwards Java

Here is consummate code instance of How to calculate spousal human relationship too intersection of 2 Set inwards Java. It use's static method Sets.intersection() too Sets.union() to notice intersection too spousal human relationship of 2 Sets inwards Java.

package test;

import com.google.common.collect.Sets;
import java.util.HashSet;
import java.util.Set;

/**
 *
 * Java programme to demonstrate How to calculate Intersection too Union of two
 * Set using Google's Guava library example.
 *
 * @author http://javarevisited.blogspot.com.au
 */
public class SetIntersectionExample {

 
    public static void main(String args[]) {
 
        // Set which stores closed to Singer
        Set<String> singers = new HashSet<String>();
        singers.add("Amitabh Bacchan");
        singers.add("Shan");
        singers.add("Medona");
     
        // Another Set which stores Actors
        Set<String> actors = new HashSet<String>();
        actors.add("Amitabh Bacchan");
        actors.add("tom cruise");
        actors.add("SRK");
     
        // Calculating Intersection of 2 Set inwards Java
        Set<String> intersection = Sets.intersection(actors, singers);
        System.out.printf("Intersection of 2 Set %s too %s inwards Java is %s %n",
                singers.toString(), actors.toString(), intersection.toString());
        System.err.println("Number of elements mutual inwards 2 Set : "

                           + intersection.size());
     
        // Calculating Union of 2 Set inwards Java
        Set<String> spousal human relationship = Sets.union(actors, singers);
        System.out.printf("Union of 2 Set %s too %s inwards Java is %s %n",
                singers.toString(), actors.toString(), union.toString());
        System.out.println("total set out of chemical cistron inwards spousal human relationship of 2 Set is : "

                            + union.size());
    }
     
}

Output:
Intersection of 2 Set [Medona, Shan, Amitabh Bacchan] too [SRK, tom cruise, Amitabh Bacchan] inwards Java is [Amitabh Bacchan]

Number of elements mutual inwards 2 Set : 1
Union of 2 Set [Medona, Shan, Amitabh Bacchan] too [SRK, tom cruise, Amitabh Bacchan] inwards Java is [SRK, tom cruise, Amitabh Bacchan, Medona, Shan]

full set out of chemical cistron inwards spousal human relationship of 2 Set is : 5

That's all on How to notice Union too Intersection of 2 Set inwards Java. It's really uncomplicated if you lot are using correct opened upward rootage library e.g. Google's Guava Collection. If you lot don't similar to utilisation opened upward rootage library, you lot tin sack write your ain method to produce the same thing, But every bit Joshua Bloch suggested inwards its pop mass Effective Java, Use library method every bit much every bit possible. That's encourages me to explore to a greater extent than on Apache commons, Google Guava too Spring framework API to a greater extent than too to a greater extent than too I did notice twain of gems similar calculating fourth dimension deviation amongst Stopwatch inwards Spring framework which helps a lot.

Further Learning
Java Fundamentals: The Java Language past times Jim Wilson
Java Fundamentals: Collections
Head First Java


Other Java Collection tutorials you lot may like
How to form a Map past times keys too values inwards Java? (tutorial)
How to form an ArrayList inwards ascending too descending lodge inwards Java? (tutorial)

Difference betwixt ArrayList too HashSet inwards Java? (answer)
The deviation betwixt TreeMap too TreeSet inwards Java? (answer)
The deviation betwixt HashMap too ConcurrentHashMap inwards Java? (answer)
The deviation betwixt HashMap too LinkedHashMap inwards Java? (answer)
The deviation betwixt Hashtable too HashMap inwards Java? (answer)
The deviation betwixt HashSet too TreeSet inwards Java? (answer)
The deviation betwixt ArrayList too LinkedList inwards Java? (answer)
The deviation betwixt Vector too ArrayList inwards Java? (answer)
Difference betwixt EnumMap too HashMap inwards Java

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