Map里面的方法

package test;


import java.util.*;
import java.util.Map.Entry;

import javax.imageio.event.IIOReadWarningListener;
import javax.security.auth.kerberos.KerberosKey;
import javax.security.auth.x500.X500Principal;

import privateclass.*;

import java.io.*;
import java.math.BigInteger;


class lop
{
	public void te()
	{
		System.out.println("yey");
	}
}
 
class Animal extends lop
{
	int num = 4;
	public void eat()
	{
		
	}
}

class Dog extends Animal
{
	
	int num = 5;
}


interface kk
{
	public void wo();
}

interface dd
{
	public void wo();
}

class poue implements kk,dd{

	@Override
	public void wo() {
		// TODO Auto-generated method stub
		
	}
	
}
public class Main {

	private static final String space_operator = " ";
	public static void main(String[] args) throws Exception {

		Scanner scanner = new Scanner(new BufferedInputStream(System.in));
		PrintWriter out = new PrintWriter(new OutputStreamWriter(System.out));
		
		Map<Integer, String> mp = new HashMap<Integer, String>();
		
		mp.put(8,"zhangsan");
		mp.put(9,"lisi");
		mp.put(10,"wangwu");
		mp.put(11,"maliu");
		mp.remove(11);
		
		for(Entry<Integer, String> x : mp.entrySet())
		{
			System.out.println(x.getKey() + "   " + x.getValue());
		}
		
		for(String x : mp.values())
		{
			System.out.println(x);
		}
		
		List<String> list = new ArrayList<String>();
		list.add("shang");
		list.add("kaishi");
		
		for(String x : list)
		{
			System.out.println(x);
		}
		
		Set<Integer> keySet = mp.keySet();
		
		Iterator<Integer> it = keySet.iterator();
		while(it.hasNext())
		{
			System.out.println(mp.get(it.next()));
		}
		
		Set<Map.Entry<Integer, String>> entry = mp.entrySet();
		Iterator<Map.Entry<Integer, String>> it2 = entry.iterator();
		
		while(it2.hasNext())
		{
			Entry<Integer, String> mEntry = it2.next();
			System.out.println(mEntry.getValue() + "   " + mEntry.getKey());
		}
	}
}