import java.util.ArrayList;

import java.util.Arrays;

import java.util.Collections;

import java.util.Iterator;

public class JavaArrayList {

public static void printArray(final ArrayList<String> words) {

System.out.print('[');

boolean first = true;

for (final String word : words) {

if (first) {

first = false;

} else {

System.out.print(", ");

}

System.out.print(word);

}

System.out.println(']');

}

public static void main(String[] args) {

ArrayList<String> words1 = new ArrayList<>(

Arrays.asList("the", "frogurt", "is", "also", "cursed")

);

printArray(words1);

ArrayList<String> words2 = new ArrayList<>(words1);

printArray(words2);

ArrayList<String> words3 = new ArrayList<>(Collections.nCopies(5, "Mo"));

printArray(words3);

System.out.print("\n foreach ArrayList\n");

for (final String word : words1) {

System.out.println(": " + word);

}

System.out.print("\n for-loop ArrayList\n");

for (Iterator<String> iter = words1.iterator(); iter.hasNext();) {

System.out.println(": " + iter.next());

}

System.out.print("\n ArrayList.get(0)\n");

System.out.println(words1.get(0));

System.out.print("\n add(index, str)\n");

words1.add(0, "First");

printArray(words1);

words1.add(1, "appended");

printArray(words1);

System.out.print("\n add(str) to last element\n");

words1.add("last");

printArray(words1);

System.out.print("\n remove()\n");

words1.remove(0);

printArray(words1);

words1.subList(1, 3).clear();

printArray(words1);

System.out.print("\n swap()\n");

Collections.swap(words1, 0, 1);

printArray(words1);

Collections.swap(words1, 0, 1);

printArray(words1);

System.out.print("\n indexOf()\n");

System.out.println("index: " + words1.indexOf("also"));

}

}