Complete source code for Java class ing and Utility Classes

Package com. elink. util;

/*

* <P> company: lingke software www.elingke.com </P>

* @ Author liubaojun

* @ Version 1.0

* Created on 2004-11-29

* ElinkbspSource code

*/

Import java. Lang. Reflect .*;

Import java.net .*;

Public class classutil

{

/**

@ Param strclassname

@ Param argstype

@ Param ARGs

@ Return object

@ Throws java. Lang. nosuchmethodexception

@ Throws java. Lang. securityexception

@ Throws java. Lang. classnotfoundexception

@ Throws java. Lang. instantiationexception

@ Throws java. Lang. illegalaccessexception

@ Throws java. Lang. illegalargumentexception

@ Throws java. Lang. Reflect. invocationtargetexception

*/

Public static object loadclass (string strclassname, class [] argstype,

Object [] ARGs)

Throws nosuchmethodexception, securityexception, classnotfoundexception,

Instantiationexception, illegalaccessexception,

Illegalargumentexception, invocationtargetexception

{

Object returnobj = NULL;

Class classname = NULL;

Constructor = NULL;

Classname = Class. forname (strclassname );

Constructor = classname. getconstructor (argstype );

Returnobj = constructor. newinstance (ARGs );

Return returnobj;

}

/**

@ Param strclassname

@ Return object

@ Throws java. Lang. nosuchmethodexception

@ Throws java. Lang. securityexception

@ Throws java. Lang. classnotfoundexception

@ Throws java. Lang. instantiationexception

@ Throws java. Lang. illegalaccessexception

@ Throws java. Lang. illegalargumentexception

@ Throws java. Lang. Reflect. invocationtargetexception

*/

Public static object loadclass (string strclassname)

Throws nosuchmethodexception, securityexception, classnotfoundexception,

Instantiationexception, illegalaccessexception,

Illegalargumentexception, invocationtargetexception

{

Return loadclass (strclassname, null, null );

}



Public static object loadclass (string strclassname, object defobj)

{

Try

{

Return loadclass (strclassname, null, null );

}

Catch (throwable ex)

{

Logutil. logexception (Ex );

}

Return defobj;

}

/**

@ Param classobject

@ Param strmethodname

@ Param argstype

@ Param ARGs

@ Return object

@ Throws java. Lang. nosuchmethodexception

@ Throws java. Lang. securityexception

@ Throws java. Lang. illegalaccessexception

@ Throws java. Lang. illegalargumentexception

@ Throws java. Lang. Reflect. invocationtargetexception

*/

Public static object invokemothod (Object classobject, string strmethodname,

Class [] argstype, object [] ARGs)

Throws nosuchmethodexception, securityexception, illegalaccessexception,

Illegalargumentexception, invocationtargetexception

{

Method concatmethod = classobject. getclass (). getmethod (strmethodname,

Argstype );

Return concatmethod. Invoke (classobject, argS );

}

/**
@ Param classobject
@ Param strmethodname
@ return object
@ throws Java. lang. nosuchmethodexception
@ throws Java. lang. securityexception
@ throws Java. lang. illegalaccessexception
@ throws Java. lang. illegalargumentexception
@ throws Java. lang. reflect. invocationtargetexception
*/
Public static object invokemothod (Object classobject, string strmethodname)
throws nosuchmethodexception, securityexception, illegalaccessexception,
illegalargumentexception, invocationtargetexception

{< br>
return invokemothod (classobject, strmethodname, null, null );

}

/**
@ Param classobject
@ Param strfieldname
@ return object
@ throws Java. lang. nosuchfieldexception
@ throws Java. lang. securityexception
@ throws Java. lang. illegalargumentexception
@ throws Java. lang. illegalaccessexception
*/
Public static object getfieldvalue (Object classobject, string strfieldname)
throws nosuchfieldexception, securityexception,
illegalargumentexception, illegalaccessexception

{< br>
Object retobj = NULL;
Field field;
Field = classobject. getclass (). getdeclaredfield (strfieldname);
retobj = field. get (classobject);
return retobj;

}

/**

@ Param classname

@ Return string

*/

Public static string whereclass (string classname)

{

String retstr = NULL;

If (! Classname. startswith ("/"))

{

Classname = "/" + classname;

}

Classname = classname. Replace ('.','/');

Classname = classname + ". Class ";

Java.net. url classurl = getresource (classname );

If (classurl! = NULL)

{

String STR = classurl. GetFile ();

Retstr = STR;

}

Return retstr;

}

/**

@ Param name

@ Return java.net. url

*/

Public static URL getresource (string name)

{

Return classutil. Class. getresource (name );

}



Public static void Compiler (string targetdir, string filename, string classpath) throws exception

{

// Javac-d e:/test-classpath c: \ work \ WEB-INF \ Lib \ BSS. Jar E:/test/testvector. Java

String STR = "javac-d" + targetdir + "-classpath" + classpath + "" + filename;

Logutil. loginfo (STR );

Runtime runtime = runtime. getruntime ();

PROCESS p = runtime.exe C (STR );

}



Public static void Compiler (string targetdir, string filename) throws exception

{

// Javac-d e:/test-classpath c: \ work \ WEB-INF \ Lib \ BSS. Jar E:/test/testvector. Java

Runtime runtime = runtime. getruntime ();

PROCESS p = runtime.exe C ("javac-d" + targetdir + "" + filename );

}

}

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