Question

In an eclipse or blues compatible code, please create a class named Items including the described methods (replace and delete0

Write the following static method:

/** Replaces each occurrence of an oldItem in aList with newItem */

public static void replace(ArrayList<String>aList, String oldItem, String newItem)

Write the following static method:

/**Deletes the first occurrence of target in aList*/

public static void delete(ArrayList<String>aList, String target)

Answer 1

import java.util.ArrayList;
import java.util.List;

public class Item {
    /** Replaces each occurrence of an oldItem in aList with newItem */

    public static void replace(ArrayList<String> aList, String oldItem, String newItem) {
        // finding the indexof old item and putting the new item in the same location
        int index = aList.indexOf(oldItem);
        while (index != -1) {
            aList.set(index, newItem);
            index = aList.indexOf(oldItem);
        }
    }

    /** Deletes the first occurrence of target in aList */

    public static void delete(ArrayList<String> aList, String target) {
        // deleting the target by calling remove()
        aList.remove(target);

    }
}

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