Javase范式

package Xwxx;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.function.IntBinaryOperator;

public class Fanx {

	public static void main(String[] args) {

		ArrayList<String> list=new ArrayList<String>();
		list.add("a");
		list.add("b");
		//list.add(1);
		Iterator<String> it=list.iterator();
		while(it.hasNext()){
			String str=(String)it.next();
			System.out.println(str.length());
		}

	}

}