TestArrayList
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public class TestArrayList {
public static void main(String[] args) {
java.util.ArrayList cityList = new java.util.ArrayList();
cityList.add("London");
cityList.add("Denver");
cityList.add("Paris");
cityList.add("Miami");
cityList.add("Seoul");
cityList.add("Tokyo");
System.out.println("List size? " + cityList.size());
System.out.println("Is Miami in the list? "
+ cityList.contains("Miami"));
System.out.println("The location of Dever in the list? "
+ cityList.indexOf("Dever"));
System.out.println("Is the list empty? "
+ cityList.isEmpty());
cityList.add(2, "Xian");
cityList.remove("Miami");
cityList.remove(1);
System.out.println(cityList.toString());
for(int i = cityList.size() - 1; i >=0; i--)
System.out.print(cityList.get(i) + " ");
System.out.println();
java.util.ArrayList list = new java.util.ArrayList();
list.add(new Circle(2));
list.add(new Circle(4));
System.out.println("The area of the circle? "
+ ((Circle)list.get(0)).getArea());
}
}
List size? 6
Is Miami in the list? true
The location of Dever in the list? -1
Is the list empty? false
[London, Xian, Paris, Seoul, Tokyo]
Tokyo Seoul Paris Xian London
The area of the circle? 12.566370614359172
public static void main(String[] args) {
java.util.ArrayList cityList = new java.util.ArrayList();
cityList.add("London");
cityList.add("Denver");
cityList.add("Paris");
cityList.add("Miami");
cityList.add("Seoul");
cityList.add("Tokyo");
System.out.println("List size? " + cityList.size());
System.out.println("Is Miami in the list? "
+ cityList.contains("Miami"));
System.out.println("The location of Dever in the list? "
+ cityList.indexOf("Dever"));
System.out.println("Is the list empty? "
+ cityList.isEmpty());
cityList.add(2, "Xian");
cityList.remove("Miami");
cityList.remove(1);
System.out.println(cityList.toString());
for(int i = cityList.size() - 1; i >=0; i--)
System.out.print(cityList.get(i) + " ");
System.out.println();
java.util.ArrayList list = new java.util.ArrayList();
list.add(new Circle(2));
list.add(new Circle(4));
System.out.println("The area of the circle? "
+ ((Circle)list.get(0)).getArea());
}
}
List size? 6
Is Miami in the list? true
The location of Dever in the list? -1
Is the list empty? false
[London, Xian, Paris, Seoul, Tokyo]
Tokyo Seoul Paris Xian London
The area of the circle? 12.566370614359172
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