Java反射例子

一 学生类

package com.enorth.bean;

/**
 * <p>Title: 学生 </p>
 * <p>Description: 学生组件</p>
 * <p>Copyright: Copyright (c) 2007</p>
 * <p>Company: </p>
 * @秦金雷
 * @version 1.0
 */

public class Student {

  private int studentId;
  private String studentName;
  private String studentSex;
  private int studentAge;
  private String studentAddress;

  public int getStudentId() {
    return studentId;
  }

  public void setStudentId(int studentId) {
    this.studentId = studentId;
  }

  public String getStudentName() {
    return studentName;
  }

  public void setStudentName(String studentName) {
    this.studentName = studentName;
  }

  public String getStudentSex() {
    return studentSex;
  }

  public void setStudentSex(String studentSex) {
    this.studentSex = studentSex;
  }

  public int getStudentAge() {
    return studentAge;
  }

  public void setStudentAge(int studentAge) {
    this.studentAge = studentAge;
  }

  public String getStudentAddress() {
    return studentAddress;
  }

  public void setStudentAddress(String studentAddress) {
    this.studentAddress = studentAddress;
  }

}

二 反射类

package com.enorth.reflection;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2007</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class RefStudent {

    public static Object loadClassObject(String className){
    
      Object o = null;
    
      try {
       
        Class clas = Class.forName(className);
       
        if(clas!=null){
         
          try {
            o = clas.newInstance();
          }
          catch (IllegalAccessException ex1) {
            ex1.printStackTrace();
          }
          catch (InstantiationException ex1) {
            ex1.printStackTrace();
          }
         
        }else
          o = null;
      }
      catch (ClassNotFoundException ex) {
        ex.printStackTrace();
      }
     
      return o;
    }
}

三 测试类

package com.enorth.test;

import com.enorth.reflection.RefStudent;
import com.enorth.bean.Student;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2007</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class StudentTest {

  /**
   * 反射机制测试
   *
   * @param className String
   */
  public static void testRef(String className){

    Object o = RefStudent.loadClassObject(className);

    if (o != null) {
      Student student = (Student) o;
      student.setStudentAddress("郑州市");
      System.out.println(student.getStudentAddress());
    }else {
      System.out.println("反射机制获得的 Student 对象为空！");
    }

  }

  /**
   * main 方法测试
   *
   * @param args String[]
   */
  public static void main(String[] args){
    StudentTest.testRef("com.enorth.bean.Student");
  }

}