36,051 Topics
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| | [CODE]import javax.swing.JOptionPane; import java.util.Random; public class guess2 { public static void main(String[]args) { int num; int guess; int diff; String input; int Diff; Random randomNumbers=new Random(); guess=randomNumbers.nextInt(100); diff= num - guess; Diff=Math.abs(diff); input=JOptionPane.showInputDialog("Enter your guess."); num=Integer.parseInt(input); for(int i=0; i<5;i++) { while(num<0 || num>100) { input=JOptionPane.showInputDialog("Invalid number!Please re-enter: "); num=Integer.parseInt(input); if(Diff==0) …  |
| | Can someone help me, I was getting an error message about SQL syntax, now I get no error message, it redirects, but database does not change. I also made sure autocommit was enabled. Any ideas? [code=jsp]<%@page import="java.sql.*,java.util.*" %> <% Connection conn = null; PreparedStatement stmt = null; String userName = … |
| | why my executable jar file created in Netbeans cant write/output a .txt file. . .my program must create a text file and write with it, how can it doesn't work when i convert it to .jar but if i run it in netbeans it work fine?.. |
| | Hello, I am trying to design a page which has a textarea and a button that says "say something", assume the page is "test.jsp". If a user hit that "say something" button, browser redirects to another page where user can enter anything they want, assume the page is "test1.jsp" . … |
| | hey guys. i'm having trouble with looping a program. my assignment is to get the user to input a string and then display it backwards. i've successfully done this, but it's supposed to ask if you want to run the program again, and that's where my program fails. [CODE]public class … |
 | When I was using Python I created a program using basic knowledge of object orientation to compare between different cars. now when i switch to java I come up with a plan to compare lines I have created a point class and get the lines as well but now i … |
| | When i type in the following link manually in firefox as " file://///172.16.2.1/copyediting/ELS/mallet.pdf", pdf file is loaded successfully in the firefox browser. PDF file is located in remote server which is referred by IP 172.16.2.1. I've assigned the Same link in a String in jsp page and tested it through … |
| | Hi.I am trying to slice a byte array such that the output must have the required bytes from given location of the byte array.Also I am looking for appending bytes to a byte array.Please help me.References would be accepted.Thanks.  |
| | Hello, I am using a Jtable in my application.I am entering values in last column of that table.Below the table, i have a Jbutton named as 'Save'.Suppose while clicking on 'Save', the entire row remains selected except the last cell in which I have entered the value.Then if I retrieve … |
| | Hello, I have to create a product class that holds the item number, product name, units in stock, and the unit price. I also have to create a java application that displays the same info. I have been working on this for three days now... I am getting frustrated because …  |
| | Okay, so I am taking an intro class for java programming and my instructions for this program were to write a program that found the first 20 numbers that when divided by 2,3,4,5,6 all left a reminder of one and then when divided by 7, left a reminder of 0. …  |
| | I have a project with these requirements: > Create an array based phone directory which can load name and numbers of all the poeple in the phone book (which is an array) and can change numbers of existing entries, add new entries, delete existing entries and save any new changes … |
| | Hi! I need help with a class project. It is basically an encoder/decoder program, with two parts. Part 1: Take text entered by a user, convert each character to a number, and save the result to a file. Part 2: Read each number from the file, convert it to a … |
| | Can any one please give some links about Form Validation through java script. Or if any one can assign me some assignment related to JSP,thn please reply this post. I need to know that practically how and where JSP is used except form validation. Thanks for your time. Regards, |
| | Is it safe to assume that any object that is preceded with the letter 'J' is a member of the Swing package? Just trying to get lightweight versus heavyweight components sorted properly. Thanks. -- Curtis |
| | hello, I am using byte array to store values in it & then i am storing that byte array into database using [code] st.setBytes(1,myBytearray); [/code] while retreiving values it works fine if last byte value is not zero. But if it is zero, i think,last value is not getting saved …  |
| | would anyone explain the difference among "public static int " and "public final int " and "public static final int" ? thanks |
| | Hello. First of all i must say that im a noob with .jsp programming, so pleas be indulgent :) .. [code]String somepage = "client.jsp"; <%@ include file="menu.jsp" %> // this works[/code] [code]//How to add variable somepage in file= <%@ include file="somepage" %>[/code] Thanks ! |
| | Hey pal, It would be great if you give your suggestions and ideas on Java script Tile base game engine. You know.. with click to walk (or keyboard), inventory, grab items, talk to people, exp, levels, etc. Any Good Ways, any help would be appreciated. Thanks, Eric Paul |
| | Hi, everyone! I wish i could find someone who is diligent in answering to my queries since i am a beginner when it talks about java. I understand visual basic very well since it was the language i used when i am doing my thesis, and now i am working, …  |
| | I had learned that JVM will collect only the freed memory location during the garbage collection..That is if an object had a reference, then it will not be collected... My doubt is, will the JVM collect all the used location whenever it goes out of the method..That is . [ICODE] … |
| | Hi all The program i'm trying to write is meant to take a series of HTML codes as input and check to see if the all the tags in that code are matched or not (it should basically check all the opening tags and see if they have been closed) … |
| | Does anybody know how to indent in the java code and then once then one you run the application the output is displayed with the indentation you created. Anyone's input in this would be helpful. |
| | Hello People Please suggest me the use of passing class reference in a method Here is the sample code from class A [code]public Integer[] getReport(Class classname, String sql) {[/code] And, then when it is called inside class C, it is referred to as , [code]new A().getReport(B.class, "select * from Table … |
| | hi, i just have many questions regarding abstract class, please briefly explain if you may. thanks. 1. what is the difference between declaring public abstract class and abstract class ? 2. should abstract class have a constructor? i know by default it has one, but since abstract class doesn't have … |
| | A computer program is to be developed to be used in clocks. Here is a class definition for this program public class Time { public int hour; public int minute; public boolean isMorning; } Enhance the above class definition by providing two constructors: one that allows a time to be … |
| | HI! i need to create a program that lets user input as many numeric grades as they like.... in return they get the letter grade for each and the their grade average, minimum, and maximum. this is all i have so far...... import TerminalIO.KeyboardReader; public class LetterGradeWLT { public static … |
| | Hi, I am in a requirement of selecting a particular .csv file for reading into the program for further manipulations (calculations) based on zipcode entered by the user. So, can u pls direct me for the same so as to get the things moving on. |
| | So, I am writing a program which reads inputs from a text file. The prgoram plants a plant at (x,y) location which is read from a file as PLANT 3,4 for example. It also puts the plant in flames from command FLAME 3,4. So, there will be multiple plants and … |
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| | I changed the name of a folder so that it would meet the requirements for my assignment submission and now my program wont run in the command window. its saying it can't find the .txt files. However, the program runs without any problems in JCreator. i have a folder called … |
| | I know that the code sorts a list of temperatures numerically but i cant get my head round what it does in detail, as in line by line. [code] public void sortnumerically() { for (int i = 0; i < temperatures.size() - 1; i++) { int min = i; for … |
| | hie all, i am here all because of need u guys help.. my task is to create two fishes which can swim inside aquarium and move and turn by using java coding. actually i got a set of uncompleted code. what i need to do is to compile all the … |
 | After numerous issues with my first hosting I got new deal. Now I want to get my blog move to its new home, but I hit the wall with simple WAR deployment Here is catalina.log [code]INFO main org.apache.catalina.core.StandardService - Starting service Catalina INFO main org.apache.catalina.core.StandardEngine - Starting Servlet Engine: Apache … |
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| | HI!!!I am new in java i would like to know sample program that counts the number of vowels of word |
| | /*this program counts the number of transitions and tranversion occur between two *genes when two DNA strings from a source file are compared using threading.*/ [code] import java.io.*; import java.util.*; import java.lang.*; public class Gacer021109{ public static Vector<String> DNA = new Vector<String>(); public static int cnt=0; public static void main(String[] … |
| | plzzzzz help me on this java programming question? hello people.. can u plzzzzzzzzzzzzzzzzzzz help me out with this java programm. its due tmrw....... and i havent even get started on this program. i dont want to cheat .... actually some hints of how to do this program and a brief … |
| | Can anyone help me write a program in java that: Has a user enter their name then enter their last 4 weeks hours worked Then have it display the: -total hours worked -average hours per week -full time equivalent: 2 weeks 3 days 7 hours This would help me out … |
| | Hi iwould like to check if there is any function that allows me to take the last 4 char or a String? Or the 1st two char of a String? I require this because i require to have a auto increase product id. Example current productid stops at WA0059. When … |
| | i have a question on how i could calculate the overall score of the users input using five instance variables, three for three quizzes, one for a midterm and one for a final exam. the quizzes are graded between 1 and 10 while the midterm and final are graded between … |
| | I am writing a 2-part program, a main program and a test program that figures the area and perimeter of a rectangle from an users input. I have my main program with no compile errors, but my test program has a couple errors and they both have to do with … |
| | So the point of the other thread (java compiler) was I could not test any solutions I came up with at home for my next question. My assignment is to create a Binary Tree (done), and write the output to a file name (out.dat). The assignment is for one of … |
| | Hi! I'm a newbie in drawing graphics with Java and have another problem with my traffic Jam simulation: At the end of the simulation the program should draw the finalA array as a series of filled/unfilled squares. All I get is a white window coming up:@ I will post all … |
| | Hi! I'm really fed up with my program. I'm trying to write a JAVA simulation of a traffic jam. In the beginning the user inputs the length a of Road n (problem with the constructor) and the number of cars c. The Road is an object- simply an array filled … |
| | I'm having trouble getting this while loop to stop and look for a new input. Obviously the while loop is infinite because I don't get new input. I know this is easy but I'm still stuck here is my while loop [code] while (guessInt != randInt){ setPrevGuess(guessInt); guessInt = Integer.parseInt(GuessGame.numberField.getText()); … |
| | Hi im new to jsp and I was wondering anybody could help me about uploading images using jsp. |
| | Hi, I am writing a program that has 3 files: File 1: One.java File 2: abstract1.java File 3: child.java Child is a subclass of abstract1 and abstract1 is an abstract class. I am trying to call a method in the Child class from One.java . Currently i have this: One.java … |
| | why we have to declare the main function inside the class and we have to save the file name ( .java) as the class (which contains the main function) name why............what's the reason ? Can we use another name for the saving the .java file ........... |
| | Hi, I have got an arraylist with Profile objects where each profile object has a HashSet of Customers and each Customer in Hashset has further a HashSEt of movies. I have got it in JSP page through servlet like [code]<% ArrayList profiles = (ArrayList)request.getAttribute("profiles"); %>[/code] now i want to access … |
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