内省操作javabean的属性

public class Person {// javabean

private String name;
private String password;
private int age;

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getPassword() {
return password;
}

public void setPassword(String password) {
this.password = password;
}

public int getAge() {
return age;
}

public void setAge(int age) {
this.age = age;
}

public String getAb(){
return null;
}

}