java – 如何在android中添加List项目中的数据

我的MainActivity.java类代码：

public class MainActivity extends Activity {
private PersonalInfo item;
private List<PersonalInfo> itemList = new ArrayList<PersonalInfo>();

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    for (int i = 0; i < 5; i++) {
        item.setFirstName("AA::" + i);
        item.setLastName("BB::" + i);
        item.setAddress("New City " + i);
        item.setSex("Male");
        itemList.add(item);
        item = new PersonalInfo();
    }
    for(PersonalInfo p:itemList){
        System.out.println("First Name::"+p.getFirstName());
        System.out.println("Last Name::"+p.getLastName());
    }

}

}

我的PersonalInfo.java类代码：

public class PersonalInfo {

 private String firstName;
 private String lastName;
 private String address;
 private String sex;

 public String getFirstName() {
  return firstName;
 }
 public void setFirstName(String firstName) {
  this.firstName = firstName;
 }
 public String getLastName() {
   return lastName;
 }
 public void setLastName(String lastName) {
  this.lastName = lastName;
 }
 public String getAddress() {
  return address;
 }
 public void setAddress(String address) {
   this.address = address;
 }
 public String getSex() {
   return sex;
 }
 public void setSex(String sex) {
   this.sex = sex;
 }  

}

当我运行它,然后显示流动的错误

谢谢你的帮助.