String array in methods and printing

Question

I need to figure out what this method does. I don't understand this part specifically. I also would like to know how to print the answer. What I have done just prints a memory address I think.

tmp[i] = a[i].length();

Here is the entire method

    private static int[] bar(String []a)
{
    int [] tmp = new int[a.length];
    for (int i = 0; i<a.length;i++)
    {
        tmp[i] = a[i].length();
    }
    return tmp;
}

This is what I have tried to do to call the method and print the answer.

    String [] a = {"hey", "how", "are", "you"};
    System.out.println(bar(a));

return the size of each word, and by the way it's not the memory address, it's just the name of the class followed by the hashcode — Johnny Willer
– Johnny Willer, Commented Oct 31, 2015 at 16:43

janos · Accepted Answer · 2015-10-31 16:44:21Z

3

The method creates an array of sizes of the parameters. So for ["hey", "how", "are", "you"] it will give back [3, 3, 3, 3].

An easy way to print an array nicely is Arrays.toString:

System.out.println(Arrays.toString(bar(a)));

What I have done just prints a memory address I think.

No. What you saw was the result of the toString method of the array. Arrays inherit the default implementation of Object.toString, which is classname + "@" + hexadecimal representation of the hashcode.

answered Oct 31, 2015 at 16:44

janos

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