通过Class类获取对象(实例讲解)

/**
 * Created by hunt on 2017/6/27.
 * 测试的实体类
 * @Data 编译后会自动生成set、get、无惨构造、equals、canEqual、hashCode、toString方法
 */
@Data
public class Person {
  private String name;
  private int age;
}

/**
 * Created by hunt on 2017/6/27.
 */
public class NewInstanceTest {
  public static void main(String[] args) {
    Class<Person> personClass = Person.class;//获取Class实例
    try {
      Person p = personClass.newInstance();//通过Class获得Person实例
      p.setAge(28);
      p.setName("hunt");
      System.out.println(p);
    } catch (InstantiationException e) {
      e.printStackTrace();
    } catch (IllegalAccessException e) {
      e.printStackTrace();
    }
  }
}

/**
 * Created by hunt on 2017/6/27.
 * 测试的实体类
 */

public class Person {
  private String name;
  private int age;

  public String getName() {
    return name;
  }

  public int getAge() {
    return age;
  }

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

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

  public Person(String name,int age){}//有参数构造函数
}

/**
 * Created by hunt on 2017/6/27.
 */
public class NewInstanceTest {
  public static void main(String[] args) {
    Class<Person> personClass = Person.class;//获取Class实例
    try {
      Person p = personClass.newInstance();//通过Class获得Person实例
      p.setAge(28);
      p.setName("hunt");
      System.out.println(p.getAge()+"----"+p.getName());
    } catch (InstantiationException e) {
      e.printStackTrace();
    } catch (IllegalAccessException e) {
      e.printStackTrace();
    }
  }
}