BE THE CODER > Tools and Libs > Google Guava Examples > Collections

Google Guava is a java library with lot of utilities and reusable components. This requires the library guava-10.0.jar to be in classpath. The following example shows using Sets.powerSet() API. It returns the set of all possible subsets of the given set.

File Name :	com/bethecoder/tutorials/guava/collection_tests/PowerSetTest.java
Author :	Sudhakar KV
Email :	[email protected]


package com.bethecoder.tutorials.guava.collection_tests;



import java.util.Set;



import com.google.common.collect.ImmutableSet;

import com.google.common.collect.Sets;



public class PowerSetTest {



  /**

   * @param args

   */

  public static void main(String[] args) {

    

    ImmutableSet<Integer> intSet = ImmutableSet.of(1, 2, 3);

    System.out.println(intSet);

    

    System.out.println("\nPower Set : ");

    Set<Set<Integer>> intPowerSet = Sets.powerSet(intSet);

    for (Set<Integer> subSet : intPowerSet) {

      System.out.println(subSet);

    }

  }



}