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 Tools and Libs > Google Guava > Collections > New HashSet

New HashSet 

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.newHashSet() API. It returns a mutable HashSet object containing the given elements in unspecified order.

File Name  :  
com/bethecoder/tutorials/guava/collection_tests/NewHashSetTest.java 
Author  :  Sudhakar KV
Email  :  kvenkatasudhakar@gmail.com
   
package com.bethecoder.tutorials.guava.collection_tests;

import java.util.Arrays;
import java.util.Set;

import com.bethecoder.tutorials.guava.common.Student;
import com.google.common.collect.Sets;

public class NewHashSetTest {

  /**
   @param args
   */
  public static void main(String[] args) {
    Set<String> stringSet = Sets.newHashSet("ONE""TWO""THREE");
    System.out.println(stringSet);
    
    Set<Integer> intSets = Sets.newHashSet(1234);
    System.out.println(intSets);
    
    Student student = new Student("Sriram"2"Chess");
    Student student2 = new Student("Venkat"28"Cricket");
    Set<Student> studSets = Sets.newHashSet(Arrays.asList(student, student2));
    System.out.println(studSets);
  }

}
   

It gives the following output,
[THREE, ONE, TWO]
[1, 2, 3, 4]
[com.bethecoder.tutorials.guava.common.Student@16caf43, 
	com.bethecoder.tutorials.guava.common.Student@60aeb0]


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