How to Shuffle an Array in Java - Step by Step Examples

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How to Shuffle an Array in Java ?

Answer

To shuffle an array in Java, you can use the static `shuffle` method from the `Collections` class.

✐ Examples

1 Shuffle an Integer Array

In this example,

We create an integer array named numbers with some elements.
We import the Collections class from the java.util package.
We use the shuffle method from Collections class and pass our array numbers as an argument.
After shuffling, the elements in the array numbers will be rearranged randomly.

Java Program

import java.util.Arrays;
import java.util.Collections;

public class Main {
    public static void main(String[] args) {
        Integer[] numbers = {1, 2, 3, 4, 5};
        Collections.shuffle(Arrays.asList(numbers));
        System.out.println("Shuffled Array: " + Arrays.toString(numbers));
    }
}

Output

Shuffled Array: [3, 1, 5, 4, 2]

2 Shuffle a String Array

In this example,

We create a string array named colors with some color names.
We import the Collections class from the java.util package.
We use the shuffle method from Collections class and pass our array colors as an argument.
After shuffling, the elements in the array colors will be rearranged randomly.

Java Program

import java.util.Arrays;
import java.util.Collections;

public class Main {
    public static void main(String[] args) {
        String[] colors = {"Red", "Green", "Blue", "Yellow", "Orange"};
        Collections.shuffle(Arrays.asList(colors));
        System.out.println("Shuffled Array: " + Arrays.toString(colors));
    }
}

Output

Shuffled Array: [Yellow, Orange, Green, Red, Blue]

Summary

In this tutorial, we learned How to Shuffle an Array in Java language with well detailed examples.

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How to Shuffle an Array in Java - Step by Step Examples

How to Shuffle an Array in Java ?

Answer

✐ Examples

1 Shuffle an Integer Array

Java Program

Output

2 Shuffle a String Array

Java Program

Output

Summary

More Java Arrays Tutorials