Making a constructor that accepts an integer array

Question

How can I pass in an integer array into my constructor?

Here is my code:

import java.io.*;
import java.util.*;

public class Temperature implements Serializable
{
    private int[] temps = new int [7];
    public Temperature(int[] a)
    {
        for(int i=0; i < 7; i++)
        {
            temps[i] = a[i];
        }

    }
    public static void main(String[] args)
    {
        Temperature i = new Temperature(1,2,3,4,5,6,7);
    }
}

---

The error given is:

Temperature.java:17: error: constructor Temperature in class Temperature cannot be applied to given types;
        Temperature i = new Temperature(1,2,3,4,5,6,7);
                        ^
  required: int[]
  found: int,int,int,int,int,int,int
  reason: actual and formal argument lists differ in length
1 error

Answer 1

• For the current invocation, you need a var-args constructor instead. So, you can either change your constructor declaration to take a var-arg argument: -

  public Temperature(int... a) {
       /**** Rest of the code remains the same ****/
  }
  

• or, if you want to use an array as argument, then you need to pass an array to your constructor like this -

  Temperature i = new Temperature(new int[] {1,2,3,4,5,6,7});