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Beginning Java

array error -- incompatible types

Greenhorn

Posts: 8

posted 15 years ago

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I am hoping someone can help me. I have two methods one that is of double type and the other of int type; I have to use the int type method to reverse the results of the double method. I am listing my code below with the hope that someone can point me in the right direction on how to call the int method properly.

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package assignment6_3;

/**
 *
 *
 */
public class Assignment6_3 {

/**
     *
     */
    public static void main(String[] args) {
         // Create array
        double[] roxList = new double[10];

initialize(roxList);
        /*System.out.println("****************************");
        for(int i = 0; i< roxList.length; i++){
        System.out.println(roxList[i]);
        }*/
        
        int[] reverse = new int[initialize(roxList)];

System.out.println("****************************");

for(int i = 0; i< reverse.length; i++){
        System.out.println(reverse[i]);
        }

}

public static double[] initialize(double[] roxList){
        double[] result = new double[roxList.length];
        for (int i = 0; i < roxList.length; i++){
            roxList[i] = (int) ((Math.random()*500)+1);
        }
        return result;

}

public static int[] reverse(int[] roxList){
        int[] result = new int[roxList.length];

for (int i = 0, j = result.length - 1;
        i < roxList.length; i++, j--){
            result[j] = roxList[i];
        }

return result;

}
}

Wouter Oet

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Posts: 2700

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posted 15 years ago

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You need to change the reverse methods parameter and return type to double. But if the assignment says that it needs to be an int[] then you need to create a new array and cast all the elements.

"Any fool can write code that a computer can understand. Good programmers write code that humans can understand." --- Martin Fowler
Please correct my English.

Wouter Oet

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posted 15 years ago

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And welcome to the JavaRanch.

"Any fool can write code that a computer can understand. Good programmers write code that humans can understand." --- Martin Fowler
Please correct my English.

Roxanne Billings

Greenhorn

Posts: 8

posted 15 years ago

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Thank you so much for the help; I did try to make the reverse method a double and had another error--but let me try it again to see if I can make it work from your suggestion. I just found this forum today, it is really cool. I am an online student so these forums really help me especially since I am no "classroom" interaction.

RB

Roxanne Billings

Greenhorn

Posts: 8

posted 15 years ago

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WOW!!! Thank you so, so much for your help!! IT WORKED!!!

Wouter Oet

Bartender

Posts: 2700

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posted 15 years ago

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You're welcome.

"Any fool can write code that a computer can understand. Good programmers write code that humans can understand." --- Martin Fowler
Please correct my English.

Don't get me started about those stupid light bulbs.