package test; import java.util.ArrayList; import java.util.HashMap; import java.util.HashSet; import java.util.Iterator; import java.util.LinkedList; import java.util.List; import java.util.Map; import java.util.Set; import java.util.Stack; import java.util.TreeMap; import java.util.TreeSet; import java.util.Vector; public class TestList { static void testLinkedList(){ LinkedList<String> linkedList = new LinkedList(); for(int i = 1 ; i <= 10 ; i++){ linkedList.add(""+i); } for(String s : linkedList){ System.out.println(s); } for(int i = 0 ; i < linkedList.size() ; i++){ System.out.println(linkedList.get(i)); } System.out.println(linkedList); } static void testArrayList(){ List<String> arrayList = new ArrayList(); for(int i = 1 ; i <= 10 ; i++){ arrayList.add(""+i*10); } for(String s : arrayList){ System.out.println(s); } for(int i = 0 ; i < arrayList.size() ; i++){ System.out.println(arrayList.get(i)); } System.out.println(arrayList); } static void testVector(){ Vector<String> vector = new Vector(); for(int i = 1 ; i <= 10 ; i++){ vector.add(""+i*100); } for(String s : vector){ System.out.println(s); } for(int i = 0 ; i < vector.size() ; i++){ System.out.println(vector.get(i)); } System.out.println(vector); } static void testStack(){ Stack <String> stack = new Stack(); for(int i = 1 ; i <= 10 ; i++){ stack.push("stack"+i); } while(!stack.isEmpty()){ System.out.println(stack.lastElement()); stack.pop(); } } static void testHashSet(){ Set<String> set = new HashSet(); set.add("22"); set.add("232"); set.add("2234"); set.add("1232"); set.add(null); Iterator ite = set.iterator(); while(ite.hasNext()){ System.out.println(ite.next()); } } static void testTreeSet(){ Set<String> set = new TreeSet(); set.add("1234"); set.add("232"); set.add("22"); set.add("232"); //set.add(null); Iterator ite = set.iterator(); while(ite.hasNext()){ System.out.println(ite.next()); } } static void testHashMap(){ Map map = new HashMap(); map.put("map1", "1234"); map.put("map1", "12234"); map.put("map2", "1234"); map.put(2, "c1234"); System.out.println(map); } static void testTreeMap(){ Map map = new TreeMap(); map.put("map1", "1234"); map.put("map1", "12234"); map.put("map2", "1234"); map.put("2", "c1234"); System.out.println(map); } public static void main(String[] args) { // TODO Auto-generated method stub testLinkedList(); testArrayList(); testVector(); testStack(); testHashSet(); testTreeSet(); testHashMap(); testTreeMap(); } }