JAVA基础-反射

package com.test;

import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class JavaTest {

 private String name;
 private String password;
 
 
 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 static void main(String [] args){
  JavaTest jTest = new JavaTest();
  jTest.setName("madp");
  jTest.setPassword("123");
  Class classType = jTest.getClass();
  try {
   JavaTest jTest2 = (JavaTest)classType.getConstructor(new Class[]{}).newInstance(new JavaTest[]{});
  } catch (IllegalArgumentException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (SecurityException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (InstantiationException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IllegalAccessException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (InvocationTargetException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (NoSuchMethodException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  //获得对象所有的属性
  Field fields[] = classType.getDeclaredFields();
  for(int i=0;i<fields.length;i++){
   Field field = fields[i];
   String fieldName = field.getName();
   //获得和属性对应的getXXX()方法的名字
   String getMethodName = "get"+fieldName.substring(0, 1).toUpperCase()+fieldName.substring(1);
   Method getMethod = null;
   try {
    //获得和属性对应的getXXX()方法
    getMethod = classType.getMethod(getMethodName, new Class[]{});
   } catch (SecurityException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   } catch (NoSuchMethodException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
   Object value = null;
   try {
    //调用对象的getXXX()方法
    value = getMethod.invoke(jTest, new JavaTest[]{});
   } catch (IllegalArgumentException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   } catch (IllegalAccessException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   } catch (InvocationTargetException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }
 }
}