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  • 大小: 10KB
    文件類型: .rar
    金幣: 2
    下載: 1 次
    發布日期: 2021-06-24
  • 語言: Java
  • 標簽: Java??Java反射??

資源簡介

代碼主要實現了Java反射應用實例, 包含利用反射方法創建對象(使用默認構造函數和自定義構造函數),訪問對應對象的方法(包括帶參數的和不帶參數的),訪問對應對象的域(Field). 從這里可以看到代碼的詳細解說:http://blog.csdn.net/hejiangtao

資源截圖

代碼片段和文件信息

/**
?*Author:?Jiangtao?He;?Email:?ross.jiangtao.he@gmail.com
?*File?Name:?MyReflect.java
?*Date:?2012-1-9
?*Copyright:?All?right?reserved?by?author?-?Jiangtao?He
?*Version:?MyJavaExpert?v1.0
?*/
package?com.ross.reflect;

import?java.lang.reflect.Constructor;
import?java.lang.reflect.Field;
import?java.lang.reflect.InvocationTargetException;
import?java.lang.reflect.Method;
import?java.util.ArrayList;
import?java.util.List;

/**
?*?Author:?Jiangtao?He;?Email:?ross.jiangtao.he@gmail.com
?*?Date:?2012-1-9
?*?Since:?MyJavaExpert?v1.0
?*?Description:?reflect?method?implementation?and?test
?*/
public?class?MyReflect
{
????/**
?????*?Author:?Jiangtao?He;?Email:?ross.jiangtao.he@gmail.com
?????*?Date:?2012-1-9?
?????*?Description:?Use?reflect?method?to?access?the?fields?and?methods?of?DataTypebean
?????*/
????public?static?void?main(String[]?args)?throws?ClassNotFoundException
????????????SecurityException?NoSuchMethodException?InstantiationException
????????????IllegalAccessException?IllegalArgumentException
????????????InvocationTargetException
????{
????????int?iInt?=?2012;
????????String?sStr?=?“This?a?string!“;
????????String[]?saStr?=?new?String[]?{?“First?item?of?the?string?array“
????????????????“Second?item?of?the?string?array“
????????????????“Third?item?of?the?string?array“?};
????????List?oList?=?new?ArrayList();

????????//?Initialize?the?oList
????????int?i?=?0;
????????while?(i?????????{
????????????oList.add(i);
????????????i++;
????????}
????????//?get?class
????????Class?oClass?=?Class.forName(“com.ross.reflect.bean.DataTypeBean“);
????????//?get?the?toString?method?a?method?without?parameters
????????Method?oToStringMethod?=?oClass.getMethod(“toString“);
????????//?get?the?addDataToList?method?a?method?with?parameters
????????Method?oAddDataToListMethod?=?oClass.getMethod(“addDataToList“
????????????????int.class?int.class);

????????//?used?default?constructor?to?initialize?a?object
????????object?oDefalutobject?=?oClass.newInstance();

????????//?access?fields?process?getDeclaredFields?can?access?private?and
????????//?protected?fields
????????Field[]?oFields?=?oClass.getDeclaredFields();
????????for?(int?j?=?0;?j?????????{
????????????//?to?access?the?private
????????????oFields[j].setAccessible(true);

????????????//?getSimpleName?method?can?get?the?type?of?the?field?according?the
????????????//?field?type?set?the?data?to?the?field
????????????if?(“int“.equals(oFields[j].getType().getSimpleName()))
????????????{
????????????????oFields[j].setInt(oDefalutobject?iInt);
????????????}
????????????else?if?(“String[]“.equals(oFields[j].getType().getSimpleName()))
????????????{
????????????????oFields[j].set(oDefalutobject?saStr);
????????????}
????????????else?if?(“String“.equals(oFields[j].getType().getSimpleName()))
????????????{
????????????????oFields[j].set(oDefalutobject?sStr);
????????????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????310??2011-12-31?21:17??MyJavaExpert?V1.0\.classpath

?????文件????????393??2012-01-01?22:40??MyJavaExpert?V1.0\.project

?????文件??????22017??2011-12-30?00:58??MyJavaExpert?V1.0\.settings\org.eclipse.jdt.core.prefs

?????文件???????9884??2011-12-30?01:49??MyJavaExpert?V1.0\.settings\org.eclipse.jdt.ui.prefs

?????文件???????2868??2012-01-10?01:14??MyJavaExpert?V1.0\bin\com\ross\reflect\bean\DataTypeBean.class

?????文件???????3745??2012-01-10?01:14??MyJavaExpert?V1.0\bin\com\ross\reflect\MyReflect.class

?????文件???????2660??2012-01-10?01:14??MyJavaExpert?V1.0\src\com\ross\reflect\bean\DataTypeBean.java

?????文件???????4585??2012-01-10?01:14??MyJavaExpert?V1.0\src\com\ross\reflect\MyReflect.java

?????目錄??????????0??2012-01-10?00:15??MyJavaExpert?V1.0\bin\com\ross\reflect\bean

?????目錄??????????0??2012-01-10?00:15??MyJavaExpert?V1.0\src\com\ross\reflect\bean

?????目錄??????????0??2012-01-10?00:15??MyJavaExpert?V1.0\bin\com\ross\reflect

?????目錄??????????0??2012-01-10?00:15??MyJavaExpert?V1.0\src\com\ross\reflect

?????目錄??????????0??2012-01-04?23:27??MyJavaExpert?V1.0\bin\com\ross

?????目錄??????????0??2012-01-04?23:27??MyJavaExpert?V1.0\src\com\ross

?????目錄??????????0??2012-01-04?23:27??MyJavaExpert?V1.0\bin\com

?????目錄??????????0??2012-01-04?23:27??MyJavaExpert?V1.0\src\com

?????目錄??????????0??2011-12-29?23:37??MyJavaExpert?V1.0\.settings

?????目錄??????????0??2012-01-04?23:27??MyJavaExpert?V1.0\bin

?????目錄??????????0??2012-01-04?23:27??MyJavaExpert?V1.0\src

?????目錄??????????0??2012-01-03?23:54??MyJavaExpert?V1.0

-----------?---------??----------?-----??----

????????????????46462????????????????????20


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