java-map复合类型（HashMap-TreeMap）常用操作例子（适合初学者）

package com.net.xinfang.reflect;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.TreeMap;

/***
 * map-HashMap/HashTable/TreeMap
 * 
 * @author xinfang
 *
 */
public class map006 {
	public void map() {
		Map<Integer, String> map = new HashMap<Integer, String>();
		/***
		 * TreeMap的entrySet比keySet遍历效率高
		 */
		Map<String,String> treemap=new TreeMap<String,String>();
		Map<String,String> ht=new Hashtable<String,String>();
		ht.put(String.valueOf(1),String.valueOf(1));
		for(int i=0;i<2;i++){
			treemap.put(String.valueOf(i),String.valueOf(i));
		}
		Iterator<Entry<String,String>> tree=treemap.entrySet().iterator();
		while(tree.hasNext()){
			System.out.println(tree.next());
		}
		map.put(0, "0");// 添加key-value
		map.put(1, "1");
		//循环添加key-value
		for(int i=2;i<10;i++){
			Integer key=i;
			String value=String.valueOf(i);
			map.put(key, value);
		}
		// keyset遍历-泛型-Iterator接口
		Iterator<Integer> it = map.keySet().iterator();
		while (it.hasNext()) {
			System.out.println(it.next());
		}
		// entrykey遍历-泛型-Iterator接口
		Iterator<Entry<Integer, String>> its = map.entrySet().iterator();
		while (its.hasNext()) {
			System.out.println(its.next().getValue());
		}
		// 第二种for-entry
		for (Map.Entry<Integer, String> entry : map.entrySet()) {
			System.out.println("Key = " + entry.getKey() + ", Value = " + entry.getValue());
		}
		// 遍历map中的键
		for (Integer key : map.keySet()) {
			System.out.println("Key = " + key);
		}
		// 遍历map中的值
		for (String value : map.values()) {
			System.out.println("Value = " + value);
		}
		System.out.println(map.get(1));// 获取键值为1的值
		System.out.println(map.size());// 获取map大小
		System.out.println(map.equals(1));// 判断对象的内容是否相同
		System.out.println(map.hashCode());// 获取hashcode
		System.out.println(map.isEmpty());// 空-true,非空-false
		System.out.println(map.remove(1));// 移除键值为1的值
		System.out.println(map.values());// 获取值
		System.out.println(map.getClass());// 获取类名
		System.out.println(map.replace(0, "2"));// 替换键值为0的值为2
		System.out.println(map.toString());// 转换为字符串
		// map转换为List
		List<Integer> keyList = new ArrayList(map.keySet());
		List<String> valueList = new ArrayList(map.values());
		List<Entry> entryList = new ArrayList(map.entrySet());
		// for遍历输出
		for (Integer key : keyList) {
			System.out.println(key);
		}
		for (String value : valueList) {
			System.out.println(value);
		}
		for (Entry entry : entryList) {
			System.out.println(entry);
		}
	}
	public void searchList(String name) {
		LinkedList<String> list = new LinkedList<String>();// 链表对象
		list.add("1");// 添加元素
		list.add("2");
		list.add("3");
		list.push(name);// 入栈
		list.pop();// 出栈
		for (int i = 0; i < list.size(); i++) {
			if (name.equals(list.get(i))) {
				System.out.println("您要查询的信息存在！" + list.getFirst() + list.getLast());
			}
		}
		if (list.contains(name)) {
			System.out.println("您要查询的信息存在！");
		}
	}
	public static void main(String args[]) {
		map006 m6 = new map006();
		m6.map();
		m6.searchList("2");
	}
}