Hi I am using JRuby to interact with a Java class. I have successfully imported the java class into my jruby program and created a new instance. However when I create ... |
I don't know how to do this (yes sorry, should be a must to know maybe).
It would be easy to explain with an example :
public class PageMenuLogin extends Container {
...
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I need to call a main method of a Java class from another main method using reflection.
Usage of reflection is a must so as to remove compile time dependency of the ... |
Hi i wrote a method to calculate the number of times a number appears in an array .The problem is it works when written in the same class as the main ... |
So I had a question on here the other day about how to accessing the same data class with two different other classes without creating separate instances. It was recommended ... |
My code is like this...
but there seems to be a problem when I call the overridden method createHome(). Here is a sample code:
public class Test extends SweetHome3D {
public static ...
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I and really new to Java and I'm sure that there is a way to do this so I'm going to ask: Can you call the main method from the class?
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Hi, I need to call a java class's main method from my program, with certain parameters. Also, i need to get back the exit value/ status of this called java class. How do I do this from within my JAva program? Any pointers? I tried using the Runtim.exec() method, but that doesn't recognize my parameters. I tried calling the JavaClass.main(Args), but ... |
Hello there, I have a situation where I have a method 'x' in a class 'A'. And I have couple of main classes I mean the classes which have main method, where we call this method 'x' in class 'A'. So I have to determine at runtime in the method 'x', from which main class the call came from and then ... |
hey guys, if someone can help me on this program, it would be great I am trying to do the following: PART I 1. the total sales for each week? 2. the average daily sales for each week? 3.The total sales for all the week? 4.the average weekly sales? PART II readText(): Read text line-by-line and print it as it appears ... |
I have a main program (public static void main( ... )). I have two classes. Both classes are doing the same thing but each uses its own method to do it. That is to say, class A uses Method A and class B uses Method B. Method A and Method B are different ways to do the same work. How do ... |
nipun, As Jesper said, you name does not conform to our naming policy. It's one of the few rules we have around here, and we take it pretty seriously. Basically, you need a first name, a space, and a last name. No obviously ficticious names are allowed, either. Please visit here to change yours. We're happy you're here, and are delighted ... |
String str = new String("Wills"); Integer i1 = new Integer(32); here str and i1 are reference variables of class String and Integer accordingly and "new" operator creates instance on the heap (a memory where objects have their dwell). Reference variables keep the reference of the object on the heap. And we can access the objects through the reference variables. |
I am trying to do the following: If you guys can help, that would be great PART I 1. the total sales for each week? 2. the average daily sales for each week? 3.The total sales for all the week? 4.the average weekly sales? PART II readText(): Read text line-by-line and print it as it appears in the given data file, ... |
Testingclass is in package p2, therefore to call it you need to change directory to C:\sai and call java p2.Testingclass or you can call it from any directory using java -cp c:\sai p2.Testingclass main is no different to any other static method other than being used by the JVM as an entry point. Like other static methods it is considered better ... |
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Hallo...I am quite new to java programming and recently I came across a problem which I can't solve almost a week.I have a small garphic project called SmileyFace and when I compile it there's is awlays some problem with it. Could anybody help me just to give me a hint or a clue where am I mistaking by writing the code... ... |
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Pannar wrote: As i understand, it is one kind of inner class which is having the access to the members/instance variables of the class in which anonymous class defined...The anonymous class is declared and defined in the same statement and its scope is only within the class in which it is defined. The purpose of having it is that to acheive ... |
You are lost man, totally lost. Do you know how to pass references of one class to another? Your display should likely have public methods that accept Strings and put them into its textfields. Your Replace class should probably implement Runnable, not extend Thread. You should probably pass a reference of the Display object to the Replace object. You almost never ... |
No, i dont know how to call other than main methods from other classes And one more doubt i have i.e. Like in C can we see the execution of the program like how the code is being compiled step by step and how the value of the variable changes from step to step like(Add Watch)......... |
Hi all, How do you call a java class from the main() method in another class? Assuming the two class are in the same package. Thanks SI Edited by: okun on May 16, 2010 8:40 PM Edited by: okun on May 16, 2010 8:41 PM Edited by: okun on May 16, 2010 8:47 PM |
One way to do what I think you want to accomplish is to pass the name of the class you want to create to the main method through the command line, .e.g. 'java ClassWithMain -class ImplementingClassName'. And then do Class.forName(ImplementingClassName) casting the results to your abstract class. It would probably be clearer though to have ClassWithMain not be the abstract parent ... |
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Hi, I have just started using classes in java and do not really understand how they work. How do you call values from a class, in main? For example, this is what I currently have (this is in main): System.out.print("The final value is " + Times.finalValue); where finalValue is a double in the class Times. Thank you for your help, Marya ... |
Just because a class has a main() method, that doesn't make it a "root" class (a non-Java term, by the way). All classes are free to have main() methods, if they want. I've seen apps (albeit poorly designed) where every class had a main method(). I myself sometimes temporarily add main() methods to embedded classes to do quick & dirty functionality ... |