ArrayList /Vector/LinkedList用/迭代器遍历 /列表迭代器遍历 /使用size()和get()方法遍历/使用增强for遍历集合

package org.westos.demo3;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.ListIterator;

public class Test {

public static void main(String[] args) {
ArrayList<String> list = new ArrayList<>();
list.add("张大大");
list.add("张老二");
list.add("张老三");
list.add("张老四");
list.add("张老五");
printArrList1(list);
printArrList2(list);
printArrList3(list);
printArrList4(list);
}
//使用增强for循环
private static void printArrList4(ArrayList<String> list) {
for (String a : list) {
System.out.println(a);
}

}

// 使用size()和get()方法遍历
private static void printArrList3(ArrayList<String> list) {
for (int i = 0; i < list.size(); i++) {
list.get(i);
System.out.println(list.get(i));
}

}

// 使用列表迭代器遍历
private static void printArrList2(ArrayList<String> list) {
ListIterator<String> iterator = list.listIterator();
while (iterator.hasNext()) {
System.out.println(iterator.next());
}
}

// 迭代器遍历
private static void printArrList1(ArrayList<String> list) {
Iterator<String> iterator = list.iterator();
while (iterator.hasNext()) {
System.out.println(iterator.next());
}

}

}

package org.westos.demo3;

import java.util.Enumeration;
import java.util.Iterator;
import java.util.Vector;

public class Test2 {

public static void main(String[] args) {
Vector<Integer> vector = new Vector<>();
vector.add(1);
vector.add(2);
vector.add(3);
vector.add(4);
vector.add(5);
printVector(vector);
printVector2(vector);
printVector3(vector);
printVector4(vector);
}

// 使用增强for遍历
private static void printVector4(Vector<Integer> vector) {
for (Integer a : vector) {
System.out.println(a);
}

}

// 使用size()和get()方法遍历
private static void printVector3(Vector<Integer> vector) {
for (int i = 0; i < vector.size(); i++) {
System.out.println(vector.get(i));
}

}

// 使用Vector特有的迭代器遍历
private static void printVector2(Vector<Integer> vector) {
Enumeration<Integer> elements = vector.elements();
while (elements.hasMoreElements()) {
System.out.println(elements.nextElement());
}

}

// 使用迭代器遍历
private static void printVector(Vector<Integer> vector) {
Iterator<Integer> iterator = vector.iterator();
while (iterator.hasNext()) {
System.out.println(iterator.next());
}

}

}

package org.westos.demo3;

import java.io.ObjectInputStream.GetField;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.ListIterator;
import java.util.Vector;

public class Test3 {

public static void main(String[] args) {
LinkedList<Integer> list = new LinkedList<>();
list.add(11);
list.add(22);
list.add(33);
list.add(44);
list.add(55);
printlinkedlist1(list);
printlinkedlist2(list);
printlinkedlist3(list);
printlinkedlist4(list);
}

// d)使用增强for遍历
private static void printlinkedlist4(LinkedList<Integer> list) {
for (Integer a : list) {
System.out.println(a);
}

}

// c)使用size()和get()方法遍历
private static void printlinkedlist3(LinkedList<Integer> list) {
for (int i = 0; i < list.size(); i++) {
System.out.println(list.get(i));
}

}

// b)使用列表迭代器遍历
private static void printlinkedlist2(LinkedList<Integer> list) {
ListIterator<Integer> iterator = list.listIterator();
while (iterator.hasNext()) {
System.out.println(iterator.next());
}

}

// a)使用迭代器遍历
private static void printlinkedlist1(LinkedList<Integer> list) {
Iterator<Integer> iterator = list.iterator();
while (iterator.hasNext()) {
System.out.println(iterator.next());
}

}

}