/**
 * 描述：
 * Created by ascend on 2016/7/8.
 */
public class Client {
  public static void main(String[] args) {
    String[] names = {"beibei", "jingjing"};
    for (String name : names) {
      System.out.println(name);
    }
  }
}

/**
 * 描述：
 * Created by ascend on 2016/7/8.
 */
public class Client {

  public static void main(String[] args) {
    List<String> list = new ArrayList();
    list.add("a");
    list.add("b");
    list.add("c");
    for(String str : list){
      System.out.println(str);
    }
  }
}

/**
 * 描述：
 * Created by ascend on 2016/7/8.
 */
public class Client {

  public static void main(String[] args) {
    String[] names = {"beibei", "jingjing"};
    for (String name : names) {
      name = "huanhuan";
    }
    //foreach
    System.out.println("foreach:"+Arrays.toString(names));
    //for
    for (int i = 0; i < names.length; i++) {
      names[i] = "huanhuan";
    }
    System.out.println("for:"+Arrays.toString(names));
  }
}

输出：
foreach:[beibei, jingjing]
for:[huanhuan, huanhuan]

/**
 * 描述：
 * Created by ascend on 2016/7/8.
 */
public class Client {

  public static void main(String[] args) {
    List<String> names = new ArrayList<String>();
    names.add("beibei");
    names.add("jingjing");
    //foreach
    for(String name:names){
      name = "huanhuan";
    }
    System.out.println(Arrays.toString(names.toArray()));
    //for
    for (int i = 0; i < names.size(); i++) {
      names.set(i,"huanhuan");
    }
    System.out.println(Arrays.toString(names.toArray()));
  }
}

输出：
[beibei, jingjing]
[huanhuan, huanhuan]