How to Iterate Over a Set in Java - Step by Step Examples

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How to Iterate Over a Set in Java ?

Answer

To iterate over a set in Java, you can use the enhanced for loop or an iterator.

✐ Examples

1 Iterate Over Set Using Enhanced for Loop

In this example,

We define a set named `mySet` containing elements of a specific type.
We use an enhanced for loop to iterate over the set.
Within the loop body, we access each element of the set and perform desired operations.
Finally, we execute the loop and process each item in the set.

Java Program

import java.util.Set;
import java.util.HashSet;

public class Main {
    public static void main(String[] args) {
        // Define set
        Set<String> mySet = new HashSet<>();
        mySet.add("apple");
        mySet.add("banana");
        mySet.add("orange");

        // Iterate over set using enhanced for loop
        for (String item : mySet) {
            System.out.println(item);
        }
    }
}

Output

apple
banana
orange

2 Iterate Over Set Using Iterator

In this example,

We define a set named `mySet` containing elements of a specific type.
We obtain an iterator for the set using the `iterator()` method.
We use a while loop to iterate over the set using the iterator.
Within the loop body, we access each element of the set and perform desired operations.
Finally, we execute the loop and process each item in the set.

Java Program

import java.util.Set;
import java.util.HashSet;
import java.util.Iterator;

public class Main {
    public static void main(String[] args) {
        // Define set
        Set<String> mySet = new HashSet<>();
        mySet.add("apple");
        mySet.add("banana");
        mySet.add("orange");

        // Obtain iterator for set
        Iterator<String> iterator = mySet.iterator();

        // Iterate over set using iterator
        while (iterator.hasNext()) {
            String item = iterator.next();
            System.out.println(item);
        }
    }
}

Output

apple
banana
orange

Summary

In this tutorial, we learned How to Iterate Over a Set in Java language with well detailed examples.

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How to Iterate Over a Set in Java - Step by Step Examples

How to Iterate Over a Set in Java ?

Answer

✐ Examples

1 Iterate Over Set Using Enhanced for Loop

Java Program

Output

2 Iterate Over Set Using Iterator

Java Program

Output

Summary

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