How to sign a java class file!

My applet program performs file i/o,loadlibrary operations.so i create a jar file which contains the all java class files of my appln and signed this jar file.My applet prgm works fine.
But now my plm is, i should not create a jar file.how to sign class files? if anybody knows,plz help me.....

Why can't you create jar files?

Similar Messages

How to read the java class file to convert it in java.

hello all,
i m developing the java application which generated the java code from the java 'class file' .
Can anybody please help me, Is any java support for reading the class file? or how to know the class file format?
I know the application javad, jad, javap which is doing the same thing.
thanks for reply,
- Jayd

do you mean decompiling? there are tons of java decompilers available out there, what exactly are you trying to do here?

SQLPLUS: How to verify that java class file have been loaded

Hi All,
I just loaded my Java class file using CREATE OR REPLACE JAVA.
Java was created sucessfuly, but how can I check or find out if my file have been loaded correctly.
I also found a command :
SQL>exec myjava.showobjects
but i don't have the loadjava utility install....is there any command from SQL PLUS?
thanks

Thanks for the sql command....after that query what do I do next to see if for example tree.class is in the dba_object.
Sorry, I am a newbie and the question may be a bit generic .....

How to decomplie a java class file when java application is running/launch?

I have a simple java application with some components being displayed, now i need to get the components instance names that are been created in that java application. How do i do that?
Eg: Button b1 = new button();
now how to write a java application to decompile this class file & return me the button instance ie "b1".

I think you wanna do two different things:
1. find out which objects were created at runtime.
2. decompile class file.
I'm no so sure why.
have you tried insrospecting the class using reflection ?
Here is a code snippet that prints class field names.
try{
Class c = Class.forName("MyClass");
java.lang.reflect.Field[] f= c.getFields();
for (int i = 0;i<f.length; i++)
System.out.println(f.getName());
catch(Exception e){ }
Regards
Joseph.

How can i call java class file in jsp page

Hai,
i wants to call .class file in jsp page.
my class file is in C:\jsdk\bin.
Thanks

I'm not entirely sure what you mean by "calling a class file", but I'm going to assume that you want to do something like the following in your page:
<%
MyClass myClass = new MyClass();
myClass.someMethod();
%>etc
If that's the case, then all you have to do is make sure that the class is in the servlet engine's classpath. You'll probably also need to include an appropriate import statement at the top of the page.
Hope that helps.

How to convert a .jsp to a .java/.class file for use in peoplesoft

Hi java/jsp experts,
I want to convert a .jsp to a .java/.class file. is there a tool available, please let me know if you have any pointers....
or can i do it manually:
these are a few lines that the .jsp contains, and i would like to translate this to be in .java/.class format:
<%@ page import="sun.misc.BASE64Encoder, javax.crypto., javax.crypto.spec."%>
<%@ page import="java.util.StringTokenizer" %>
<%@ page import="java.util.Map" %>
<%!
sb.append("<input type=\"hidden\" name=\"orderPage_serialNumber\" value=\"");
sb.append(serialNumber);
sb.append("\">\n");
return sb.toString();
%>
how can i translate the above import statements and html elements from jsp to java, please let me know.
Once i have the .java file created from the .jsp, I will compile .java to create the .class file and invoke the .class in peoplecode by using java apis available in peopletools.
Thanks in advance.

Is there a way convert a binary .exe file( compiled by
another compiler) into Java .class/.jar file ? Anyone
know of a free program that can do this?It's not possible. There are many decompilers and disassemblers for Java but nothing will take you from ANY binary to Java source. It would be the end of computing as we know it and the beginning of a new era -:)

Than how can i get java class by using it's class file?

Hi
After compilation of a java program, it creates a class file.
After getting class file suppose class file has been deleted.
Than how can i get java class by using it's class file?
Thanks in advance.

get a decompiler and run your class file through it--I'll assume you want the source code back and that you are not trying to recover a missing class file by attempting to use the class file that is missing--if it's missing, then I've not a clue on how to get it back by using what is already missing.
BTW: many of your compilers have source control--if it does, just restore your missing file.

How to access variables declared in java class file from jsp

i have a java package which reads values from property file. i have imported the package.classname in jsp file and also i have created an object for the class file like
classname object=new classname();
now iam able to access only the methods defined in the class but not the variables. i have defined connection properties in class file.
in jsp i need to use
statement=con.createstatement(); but it shows variable not declared.
con is declared in java class file.
how to access the variables?
thanks

here is the code
* testbean.java
* Created on October 31, 2006, 12:14 PM
package property;
import java.beans.*;
import java.io.Serializable;
public class testbean extends Object implements Serializable {
public String sampleProperty="test2";
public String getSampleProperty() {
return sampleProperty;
}jsp file
<%@ page contentType="text/html;charset=windows-1252"%>
<%@ page import="java.sql.*,java.util.*"%>
<html>
<head>
<title>Schedule Details</title>
</head>
<jsp:useBean id="ConProp" class="property.testbean"/>
<body>
Messge is : <jsp:getProperty name="msg" property="sampleProperty"/>
<%
out.println(ConProp.sampleProperty);
%>
</body>
</html>out.println(ConProp.sampleProperty) prints null value.
is this the right procedure to access bean variables
thanks

How to decode java class file to java file

hi
how to decode java class file into java file
regards
kedar

Its really.......... really BAD.
Write ur own code... or use open source code..
Its a bad practice...
however i am telling u ..there is DJ java decompiler.
but mind it there are Obfuscator also....like codeshield and others
take care...
Alok

How to run java .class file?

How can i run/view .class file in java?. is there tool/utilities in java that can do that.?. Thanks

Ednut wrote:
I'm sure you must have been taught using the command: java yourClassName after navigating to the location of your compiled class in the command prompt.I'm sure the OP does not need condescending remarks from someone who knows almost as little Java as s/he does.

How to convert dll to a java class file?

Hi folks:
I have some DLLs in VB and C++ and I wanna to convert them to a java class file. Does anybody know if exist a sw or easy way to do it?
thanks
Autair

Well, I believe you could write JNI to call the functions in the DLLs, although I wouldn't recommend it. (You'd have a non-portable, fragile result.)

How to convert java .class file to .dll file

hi,
I got a problem, I have to convert my java .class file to .dll file. Microsoft VC++ program will invoke the converted .dll file.
Is there any other possibility.
I was confused.
Cam any body help me. If you are having solution for the can you send to my [email protected] account.
thanks,

No, it is not possible to do what you are suggesting. Yes, you could produce a DLL that wraps the JVM and loads your java class exposing a C and/or C++ callable interface, but that is a lot to go through unless your class is VERY complex. Otherwise, you might want to just create and maintain two implementations.

How to create a UML diagram from a existing .java/.class file?

I want to create a UML diagram from a existing .java/.class file automatic in JDeveloper. Can I get it? thanks!

create a new class diagram and then simply drag the java classes from your project onto the diagram area.

How to create .exe files from Java class files?

I'm new to Java and I just wonder if it is possible to make executable files out of Java class files. I've checked the Java online help and several search engines, but I still couldn't find anything about that. Is it possible to do so? If not, why not?
Thanx a lot for any help.

I don't remember if there is a program that converts the class file,
but I do know that there are a few that either convert the class file,
or the .java file. You might try searching for ".java to .exe" in the
search engine and seeing what that pulls up.

How can I hide the class file ??

Hi !
I has a question, when i write a program of Java, then use the command "javac" to compiler to class file for other people using, but the class file can be disassembled and convert to source code. How can I hide the class file and let people can not disassemble, or can not see the source code. Thinks

See these....
http://www.saffeine.com/
http://www.jarsafe.com/
I recently read this. This will help you.
http://developer.java.sun.com/developer/qow/archive/160/index.jsp
Enojy....
Rajesh

How to sign a java class file!

Similar Messages

Maybe you are looking for