I need to invoke .jar file in separate JVM from another java application, and it very CPU-consuming, so it should run with background priority in order not to affect the rest of the system. Is there any cross-platform method to do this?
Why is it that in Java, a superclass' protected members are inaccessible by an indirect subclass in a different package? I know that a direct subclass in a different package can access the superclass' protected members. I thought any subclass can access its inherited protected members.
Is it possible to write objects in Java to a binary file? The objects I want to write would be 2 arrays of String objects. The reason I want to do this is to save persistent data. If there is some easier way to do this let me know.
Thanks in advance!
Dear all,
I want to integrate facebook api in my webapplication ,from where i can login a user ,gets his online friends ,sends notification messages,logout a user.plese suggesting which api to usein java.
If i make java core dump with gcore then what is the best tool to analyze it? I need to be able make jmap, jstack, jstat etc and also i need to see values of all variables.
Something that can take core dump as frozen JVM.
Given the following code:
public class Test {
public void method(Object o){
System.out.println("object");
}
public void method(String s) {
System.out.println("String");
}
public void method() {
System.out.println("blank");
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Test test=new Test();
test.method(null);
}
}
Java prints "String". Why is this the case?
Using JNI can we pass custom data types from Java to C (or vice versa)? I see a mapping of primitive datatypes to types in C however not too sure if we can send across our own data types (e.g. Send across or return an Employee object or something!).
I have one SDK that is available in Java and another SDK that is available for .Net and would like to write a single application that interfaces with both of them. I imagine I will need to use a cross platform communication framework that can support named pipes (or other in memory communication), what is the best choice?
After some more research I found Hessian -- does anyone know anything about the maturity of this project?
I see many similar questions, however I want to find the Username of the currently logged in user using Java.
Its probably something like:
System.getProperty(current.user);
But, I'm not quite sure.
Having played with Linq (to SQL and Objects) as well as the Entity Framework from Microsoft recently, I was wondering what the non-.Net (specifically Java) equivalents are?
hi there,
I'm looking for an solution to generate a checksum for any type of java object, which remains the same for every exection of an application which produces the same object.
I tried it with object.hashcode(), but as I read in the api
....This integer need not remain consistent from one execution of an application to another execution of the same application.
thank you, best regard alex
Hi.
I wanted a thing like I declare a variable: String a = "test";
And want to know what type it is, i.e., the output should be java.lang.String
thanks in advance
Hi crew,
I'm searching for a tool, which converts a jsp file into a java file without using a server like tomcat or something else.
Can anyone help me out?
I have seen that there are many books titled:
Build Ecommerce website in php
Build shopping carts in php or asp.net
Is there any book which explains, from scratch, how to start building a website in Java using any framework or with servlets or JSP?
Desired topics:
Basic forms with logins and registration
Building catalogue system
Building shopping cart
Building newsletters system
I need a java program to get the current date without timestamp
Date d = new Date();
gives me date and timestamp
But i need only date, without timestamp. I use this date to compare with another date object that does not have timestamp.
on printing
System.out.println("Current Date : " + d)
of d it should print May 11 2010 - 00:00:00 .
I am facing a problem with my singleton when used across multiple class loaders. E.g Singleton accessed by multiple EJBs. Is there any way to create a singleton which has only one instance across all class loader?
I am looking for pure java solution either using custom class loader or some other way.