java第8天代码（集合类）

/************Student.java begin***************/
 import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class Student {
 private String name;
 private String password;
 public String getName() {
  return name;
 }
 public String getPassword() {
  return password;
 }
 public void setName(String name) {
  this.name = name;
 }
 public void setPassword(String password) {
  this.password = password;
 }
 public Student(String name, String password) {
  super();
  this.name = name;
  this.password = password;
 }
 public Student(){}
 
 public List show(String name,String password){
  
  ArrayList list=new ArrayList();
  
  return list;
 }
 
 @Override
 public String toString() {
  // TODO Auto-generated method stub
  return "name= "+name+"  password= "+password;
 }
 public static void main(String args[]){
   List list=new ArrayList();
//向list中添加对象
   list.add(new Student("xsxs","xsxs"));
   list.add(new Student("mingkun","ambow"));
   list.add(new Student("frfr","frfr"));
   list.add(new Student("bgbg","frfr"));
   list.add(new Student("cdcd","cdcd"));
  
   // Iterator  这个是迭代器
   Iterator it=list.iterator();
   while(it.hasNext()){
    System.out.println(it.next());
   }
 }
}
/************Student.java end***************/
/************TestArrayList.java begin***************/
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
public class TestArrayList {
 
 public static void main(String args[]){
  List list=new ArrayL