Java Forum

hi guys, i want to find 2^n (pow(2,n)). I am doing java.lang.Math and using power function. But error occured. Because my variable is integer type. but the function arguments are double. Can u give me a solution to find 2^n using java

Hai sir, i assigned to calculate the age from current date ,i have the date of birth of employee from that i have to calculate the age dynamically, i refer to google it was confusing me .please give some idea to do sir

Hi all, I have a requirement to print large double values without the exponential notaion. The double value can be a declared variable or any calculated value within the code. In any case, I should be able to print the result without containing the exponential notation. Please help me out.

Please sorry for my dumb question but I cannot find information on how I can change settings so that in NetBeans 6.1 I can edit blue guarded areas. I read in FAQ NetBeans Wiki: FaqFormEditingGuardedBlocks that I had to change something in Properties->Code ,but I really can't figure out what this should be. Thanks in advance.

Hello experts, I used to program in C/C++ and now switched to Java. I am having a difficulty that I need your help with. How can I limit a double variable to hold 2 decimal points only? Say I have an array of 50 doubles that each ahs a number such as 23.9918444. I want to round round this number to 23.99 and any other calculations done on...

I'm trying to create a method removedDuplicate() in which this method would find and remove a duplicated entry in an array of integers. I would like any advice on how I would create this method.

Hi all, I am developing application using struts. But i do not know how to append jsession id in URL. If any one know, reply me asap. Thanks,

How to create dynamic variables as follows for(...) { Run This( "int var" + i = i;); } to be able to create and initialize var1 = 1; var2 = 2; I was able to do this in a couple of scientific programming languages without any problem..

I am new to J2ME programming. I finally got a program transferred to my Sony Ericsson w300i phone, installed, and running. I copied the .jar and .jad files to my "Other" folder, and installed it into the "Applications" folder. It runs. But what I really want to do is now transfer a text data file to the phone periodically, and have the program...

Is it possible for a Java network application, using HttpURLConnection, to set or influence the setting of, http headers like Connection. One example might be setting Connection: Close to indicate that this is the last expected transaction for a while and the persistent connection can be closed with the response. ----== Posted via...

I am still pretty new to programming, and I sometimes can not figure something out. I am getting an error with this line in my program: Public void count_syllables(int count_syllables) I get the error <identifier expected>. What does this mean. I can not seem to make it go away!?

I am attempting to program a very basic calculator. The program simply needs to prompt the use to input the computation i.e. 2 * 5 The program needs to compute this and display the result as "The result is: 10" I think my problem comes when I need to tell java to compute the users input. I do not know what function or method I need to use....

what is System , out , println defined in the System.out.println() ?

Hi friends, i need help .. i am getting String value and i need to add leading zeros.. total length of Target string is 13char eg: suppose if i get 12 as values.. it needs to convert into 0000000000012

(Forgive all caps... they are there to differentiate btw question and code) THIS IS THE ERROR I KEEP GETTING. IT COMPILES BUT WHEN IT RUNS, THE FOLLOWING POPS UP: Exception in thread "main" java.lang.NoClassDefFoundError: PlayClip THIS IS MY CODE: import java.applet.*; import java.io.*; import java.net.*;

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What does this error for the Code below java.io.StreamCorruptedException: invalid stream header at java.io.ObjectInputStream.readStreamHeader(Unknown Source) at java.io.ObjectInputStream.<init>(Unknown Source) at com.kbs.framework.client.gui.PIPReport.doProcess(PIPReport.java:562) at...

I am writing a class which contain a variable INFINITY. Is there any constant defined for this in java so that i can assign that value? In .NET, there is System.Threading.Timeout.Infinite for infinity. I am looking for the same in java also.

Hello, I am trying to write java program to input three integer numbers compare them and display the largest and Smallest number. I have thought about the problem I would need to use a comparison operate determine which number is larger and which is smaller. I am new to java I was wondering how to but this into java source code. Can anyone...

I have set up Apache Axis with a Resin server. Everything seems to be set up correctly, axis will validate if I display the http://axis.scharlemann.com/axis/happyaxis.jsp file. However when I attempt to run a simple web service example (http://ws.apache.org/axis/ click on publishing web service for the Calculator example) I get the...

In C++, I can rethrow the exception I just caught with the throw statement. Can I do something similar in Java? } catch (Exception ex) { throw; }

Hi, Is there any way to Change encoding of Java Vm to ISO-8859-1? i am using Java vm along with an application called opencms. I get the following error message.. Error: the encoding of your Java VM is different from the OpenCms encoding! Java VM file encoding: UTF-8

I need to run a .bat file from java. This is what I got: public class CallingBatch { public static void main(String args) { Runtime run = Runtime.getRuntime(); try { run.exec("cmd start /c C:/batfile.bat"); } catch (Exception e) { e.printStackTrace();

I'm trying to create a program that prompts the user for a number N. This number will be used to prompt the user N times to provide an integer.

Hi, can anyone please say me how to remove files from .jar file? For Example: I have created a sample .jar file with jar cf sample.jar A.class B.class etc Now i want to remove all except A.class from sample.jar. How could i do that?Thanks in Advance.