list转换为map

Java代码如下：

package Test01;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class Test06 {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		a();
		b();
	}
	
	@SuppressWarnings({ "rawtypes", "unchecked" })
	public static void a(){
		List list = new ArrayList();
		for (int i = 0; i < 10; i++) {
		list.add(i);
		System.out.print(list.get(i)+" ");
		}
		System.out.println();
		
		Map map = new HashMap();
		for (int i = 0; i < list.size(); i++) {
		map.put(i, list.get(i));
		System.out.print(map.get(i));
		}
		System.out.println();
		System.out.println(map);
	}
	
	@SuppressWarnings({ "rawtypes", "unchecked" })
	public static void b(){
		List list = new ArrayList();
		
		list.add("河南");
		list.add("郑州");
		list.add("登封");
		list.add("开封");
		list.add("上海");
		
		System.out.print(list);
		
		System.out.println();
		
		Map map = new HashMap();
		for (int i = 0; i < list.size(); i++) {
		map.put(i, list.get(i));
		System.out.print(map.get(i));
		}
		System.out.println();
		System.out.println(map);
	}
}

 

代码运行后效果如下: