how to truncate an array in java

To truncate an array in Java, you can create a new array with the desired length and copy the elements from the original array to the new array using the System.arraycopy method.

Here's an example of how you can do this:

public class Main {
    public static void main(String[] args) {
        // Create an original array with 10 elements
        int[] original = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

        // Truncate the array to 5 elements
        int[] truncated = new int[5];
        System.arraycopy(original, 0, truncated, 0, 5);

        // Print the truncated array
        for (int i : truncated) {
            System.out.print(i + " ");
        }
    }
}

This code will create an original array with 10 elements, and create a new array with 5 elements. It will then use the System.arraycopy method to copy the first 5 elements from the original array to the new array. The output of this code will be:

1 2 3 4 5

You can also use the Arrays.copyOf method to create a new array and copy the elements from the original array to the new array.

Here's an example of how you can use the Arrays.copyOf method to truncate an array:

import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        // Create an original array with 10 elements
        int[] original = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

        // Truncate the array to 5 elements
        int[] truncated = Arrays.copyOf(original, 5);

        // Print the truncated array
        for (int i : truncated) {
            System.out.print(i + " " );
        }
    }
}