[java] Forum Topics

I don't understand how to used [B]Interfaces[/B] WindowListener and [B]Methods[/B] of it. Please for give me example. Thanks!

Hi Everyone, I am writing a program to convert measurements. I need the to program to have a menu. I have different units of measure to convert to one particular one. I think that I need to use a case statement. But I have no idea on how to construct …

Well I got the whole substring thing working.. thanks a lot. Now I've gotta struggle with the "stdin.readline()" which doesn't wanna work for some odd reason :P I imported the java.io.* i created a new BufferedReader ... and it just doesn't wanna work. Are there any other ways of getting …

Hi everyone, I am trying to save the entire jtable (as an object if possible) to my disk and then be able to read that same file in the same table. First there are two buttons on my frame one is "load" and the other "save as" when the save …

I need some help!! I need to have a user input a phone number and then spit it out using StringTokenizer. This is what I have so far: import java.util.*; import java.io.*; class Prob8_2 { public static void main (String []args)throws IOException { BufferedReader stdin = new BufferedReader (new InputStreamReader(System.in)); …

This is urgent! I need an I/O code by today but I have no idea how to do it. Could anyone help a poor guy like me and maybe have some Java practice by writing a short code using the following information? I'll learn how it works later! Just help …

Hi everyone I am new to java and am writing a program thats meant to have the following terminal output... Enter a number: 29 29 is a prime number. Enter a number: -7 Please enter a positive integer. Enter a number: 45 45 is not a prime number. Enter a …

hi, can anybody help me , i need the following program to be developed in J2ME. writting screen saver program using J2ME. so if anybody know about this , pls help me regards, prakash

Hi this is Salman.I am having a problem is linear search.The program doesnt compile giving the error "No method found matching linsearch".My code is class search{ public static void main(String args[]){ int A[]=new int[1000]; for(int i=0;i<A.length;i++){ A[i]=(int) (1000*Math.random() +1); System.out.println(linSearch(799, A[i])); } } } class searching{ public static int linSearch …

Ok i have gotten stuck on this program and I need help This program is supposed to calculate the balance of a checking account after the user has entered the type of action (withdrawl, deposit) they would like to do. My output should be a report that prints the beginning …

My program for school requires me to output information as such... Name: Steve Address: 123 Main Phone# 555-5555 Social SecuritY# 555-555-555 Current Hours: 0.0 Name: Mary Address: 13 Manor Phone# 555-5555 Social SecuritY# 555-555-555 Paid:846.15 Name: Gwen Address: 1 Birch Phone# 555-5555 Social SecuritY# 555-555-555 Current Hours: 2.0 Paid: 17.1 …

I need urgent help with the following problem: Suppose  there is a class  AirConditioner . The class  supports the following behaviors : turning the air conditioner on and off. The following methods  are provided for these behaviors : turnOn and turnOff . Both methods  accept no arguments  and return no value . There …

Hi! I have some questions on Java: Write a literal  representing the largestcharacter  value . I think the aswer is: Del 1 more question: You are given  a class named  Clock that has three instance variables : One of type  int  called hours , another of type  boolean  called isTicking , and the …

G'day.. Am new to this whole object oriented stuff. But keen to learn. Am trying to compile this class but keep getting the following error when i declare anything that 'implements'. i remove the declarations and all subsequent code references and she compiles.. any ideas?? *********************START_OF_ERROR********************** ChatClientApplication.java:6: ChatClientApplication is not …

I don't understand constructors. Can anybod help? The question is: You are given

Hi there. My name is Diana Thomas. I am a junior Java Developer who needs a bit of help. I am trying to automatically send e-mails from my Java servlets. I am using JDeveloper with Oracle 10g. I have got the mail.jar and the activation.jar from the JavaMail and JavaBeans …

Hi, im using a code snippet found on this website, ylinderVolume A simplistic program to compute the volume of a cylinder when its radius and length are input via MyInput.class code snippet donated to daniweb by: cscgal    ( all code snippets bycscgal ) views: 52 syntax language: java122 package …

Hi everyone, I am doing a simple program that the user is able to select whatever folders(not files) in the drive(through the argument of the folderpaste function) and is able to paste the folders (with their contents) in the the path "C:" but i think my main problem is that …

Hi, The following code compiles and runs fine from the hard drive but does not compile fine from a floppy disk. It gives me a cannot resolve symbol error for the DataSet dataSet = new DataSet(); line. Any ideas? The program is supposed to except user input for 4 integers …

I need a simple script to show the user a “wait while I process

hi, I am trying to create a 2 dimmensional array that reads data from a text file using a buffer reader and tokenizer to separate the information in the text file. As far as using the buffer reader to read from text file it seems to work but when i …

Is it possible to make a timer that counts down to a cerrtin day and time also is it possible to make it display some where but not in the way

i'm creating a guestbook in java wherein it gets inputs(name,message) from a user then it will store this as an object. it basically works like a guestbook in webpages only that it will have a delete option. how can i do this? can anyone give me an idea please.

im trying to call a showInfo() method from a superclass MediaTypes, the subclass is CD and the driver class is Assn2. the problem im having is that for all the values i inherit from the MediaTypes class im getting only null values and for the gregorian date im getting a …

I made a program that simulates the roll of a six sided dice. I had my program return a random number between 1 and 6. The weird thing is I get 4 like 6 out of 10 times each time I run the program. So is the random number genarator …

I am writing a program that calculates the bill when buying eggs by the dozen. I have for the most part figured out most of the code but, I am getting an error message that is saying "variable price might not have been initialized. Here is the code please help …

I have just embarked on a Java programming course and have been given a task to work out the volume of a cylinder in cubic inches with a given radius and height. and then to convert it from cubic inches to to cubic Cm's which i have done fine. My …

Hi People who have this kind heart who could help me in my Java Programming Language Project.. I cannot sleep since last week coz I can't find a way how to solve my problem in Java My teacher told me to make a simple game using Java programming Application. Since …

im trying to sort through an array and i keep getting a null pointer exception when i do... can anyone see where im going wrong....thanks getreleasedate() gets the gregorian calendar date for each object in array. new CD() creates an empty array that can hold five objects public void sortByNewest() …

Well I got the whole thing working.. thanks a lot. Now I've gotta strugle with the "stdin.readline()" which doesn't wanna work for some odd reason :P I imported the java.io.* i created a new BufferedReader ... and it just doesn't wanna work. Are there any other ways of getting input …