用增强的for循环和Iterator输出

import java.util.*;

public class LoopEnhanced_LoopIterator {
	@SuppressWarnings("hiding")
	public static <String> void print1(Collection<String> coll){
		for(String str : coll){
			System.out.println(str) ;
		}
	}
	@SuppressWarnings("hiding")
	public static <String> void print2(Collection<String> coll){
		Iterator<String> itr = coll.iterator() ;
		while(itr.hasNext()){
			String str = itr.next() ;
			System.out.println(str) ;
		}
	}
	public static void main(String args[]){
		Collection<String> coll = new ArrayList<String>() ;
		coll.add("fmz") ;
		coll.add("cll") ;
		coll.add("hkj") ;
		
		print1(coll) ;
		System.out.println("-------------------------------------") ;
		print2(coll) ;
	}
}

import java.util.*;

public class LoopEnhanced_LoopIteratorForAnyType {
	public static  <T> void print1(Collection<T> coll){
		for(T str : coll){
			System.out.print(str+"\t") ;
		}
	}
	
	public static  <T> void print2(Collection<T> coll){//泛型任意类型的使用
		Iterator<T> itr = coll.iterator() ;
		while(itr.hasNext()){
			System.out.print(itr.next()+"\t") ;
		}
	}
	public static void makeList(List<Integer> lis, int n){
		lis.clear() ;
		for(int i=0;i<n;i++){
			lis.add(i) ;
		}
	}
	public static void main(String args[]){
		Collection<String> coll = new ArrayList<String>() ;
		coll.add("fmz") ;
		coll.add("cll") ;
		coll.add("hkj") ;
		
		print1(coll) ;
		System.out.println("\n-------------------------------------") ;
		print2(coll) ;
		System.out.println("\n-----------------------------------------") ;
		List<Integer> list = new ArrayList<Integer>() ;
		makeList(list,10) ;
		/*
		for(int l : list){
			System.out.print(l+"\t") ;
		}
		*/
		print1(list) ;
		System.out.println() ;
		print2(list) ;
	}
}