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

Rohit Jain · Accepted Answer · 2012-11-15 19:01:04Z

7

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}); 
```

edited Nov 15, 2012 at 19:01

answered Nov 15, 2012 at 18:42

Rohit Jain

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Comments

Dan Iliescu · Accepted Answer · 2012-11-15 18:44:29Z

1

This should do it: new Temperature(new int[] {1,2,3,4,5,6,7})

answered Nov 15, 2012 at 18:44

Dan Iliescu

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Comments

Bhavik Ambani · Accepted Answer · 2012-11-15 18:44:44Z

1

You can do it by the following way

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




}

answered Nov 15, 2012 at 18:44

Bhavik Ambani

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Comments

kosa · Accepted Answer · 2012-11-15 18:42:50Z

0

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

answered Nov 15, 2012 at 18:42

kosa

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Comments

Baba Fakruddin · Accepted Answer · 2022-03-26 06:55:47Z

0

Temperature i = new Temperature(1,2,3,4,5,6,7);

When you try to initialize this constructor consider it has int values you get error msg like

required: int[] found: int,int,int,int,int,int,int reason: actual and formal argument lists differ in length Before intialize the value declare it in a separate variable

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

public class HashPrint implements Serializable
{
    private int[] temps = new int [7];
    public HashPrint(int[] a)
    {
        this.temps=a;

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

        HashPrint i = new HashPrint(arr);
    }
}

answered Mar 26, 2022 at 6:55

Baba Fakruddin

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