32,199 Topics
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| | I need it to read all three of the numbers and up them back least to greatest. As of right now all it prints is 0.0 for all 3 and true. How do I get it to not print true and 0.0 and print the acual numbers. [CODE]public class Floating … |
| | So my teacher gets mad at me when I ask questions so I'm coming here for your help cause you guys a life savers :) OK So what I understand about this project is we have a file with numbers and we have to make an array to read it. …  |
 | Hi everyone, I'd like to write a small application to basically read in some text from a file, display it in a GUI (I've done this using a textpane), and then change the font color of certain words if they exist in the text (say from the default color to …  |
| | How can I use this but not return FALSE because of decimal in numbers? [CODE]public class isNumeric { // This method checks if a String contains only numbers public boolean isNumeric(String str) { //It can't contain only numbers if it's null or empty if (str == null || str.length() == … |
| | sub class [CODE] public class Exer2 { public void setLength(int x) { this.listLength=x; } public int getLength() { return this.listLength; } int listLength=getLength(); int list[]=new int[listLength]; public void display() { System.out.println("The array length is: "+list.length+" "); } } [/CODE] main class [CODE] import java.util.*; public class Output { static Exer2 … |
| | i just learned how to get input from keyboard...' [CODE] import java.io.*; class Fish{ public static void main(String[] args) { BufferedReader Keey = new BufferedReader(new InputStreamReader(System.in)); System.out.println(Keey.readLine()); } } [/CODE] But whenver i compile it..its shows me the follwing exception.. C:\Program Files\Java\jdk1.6.0_22\bin>javac Fish.java Fish.java:7: unreported exception java.io.IOException; must be caught … |
| | for (int i = 0; i < 3; i++) for (int j = 0; j < 3; j++) if (j = i) table [i] [j] = 1; else table [i] [j] = 0; |
| | I'm trying to print at a resolution other than 72 DPI, I managed this using the PrinterResolution (see the code below) but I am having a problem with the printable area. When I change the resolution to 300 DPI I just print everything smaller (ie the getImageableWidth() etc are still … |
| | Evening I am writing a small program to present a UI that when selecting 1 item from a drop down list then gives the user a selection of data relating to their selection. For instance if Ford cortina was selected from a list of Ford cars on screen in the …  |
| | **I make servlet and in servlet we make dropdown menu for display names against id but when we run the servlet drop down menu created but no values displayed form database in dropdown menu so pls help me. sorry for bad english** import java.io.IOException; import java.io.PrintWriter; import java.sql.Connection; import java.sql.PreparedStatement; … |
| | i want to create a menu. if i press the menuitem,then a certain action will occure.. and so on... give the details please... |
| | Hi folks....I have two separate copies of this program to show how my thought process worked in initial creation and how it has changed since I was helped by you folks in my airline reservation program. It does not work but I DID try to apply what I have learned … |
| | Hi! I'm reading COM port from under java. Like: [ICODE]new RandomAccessFile("COM1", "rw");[/ICODE] I know, it looks dumb, I would be more happy with ActiveX too... But I need the ability to adapt to different kind of systems in the future, and COM can be read as file on almost every … |
| | Hi there, I'm getting an error saying: non-static variable MainList cannot be referenced from a static context. My snippet of code where the error is occuring: [CODE] //this method is in a class called ViewContact public void printInfo(){ int index = MainScreen.MainList.getSelectedIndex(); } [/CODE] Now the List "MainList" is in …  |
| | Been asked to write a program using Cream library. We have to used Constraints, but i have no idea what they are Could someone give an explanation of one and possibly some examples? |
| | hello sir m find a apache poi jar file what m confuse where to put this jar file so plz help me nd send a mail me procedure of use a poi jar file set class path and other details. plz send me on my mail id <snip>  |
| | Hi all, I want to sent an email to user using Jav Mail API. But the email is sent without any authentication.. Can I do this? Please give the examples or Help me.. Thanks in Advance .. Myl |
| | i wrote a program that calculates how many coins that a vending machine splits out and such, and it does work but i can't figure how it works. at the time, i was sure of the logic, but now i can't understand how this is possible. [CODE] change = (amountPaid … |
| | Hi Dear Danimates, I have developed one tool with the help of Swing components. Is there any possibility to convert that application into JSP.. Bcz i need that application to be in the form of Struts. So help me..... |
| | [CODE]public static String strCap(String str){ //capitalizes the first letter of the string String newStr1 = str.replace(str.charAt(0), Character.toUpperCase(str.charAt(0))); int position = str.indexOf(". "); // looks for a period followed by a space while(position != -1){ newStr1 = newStr1.replace(newStr1.charAt(position + 2), Character.toUpperCase(newStr1.charAt(position + 2))); position = str.indexOf(". ", position+1); } return newStr1; … |
| | I am new in java swing and I created a frame... i checked the documentation API and it has this "setSize()" method.. so yeah i did set the size of my frame but everytime i run the program, it is not on the size that i have specified [CODE] public … |
| | i have a Jframe.in order to paint it i not using paintComponent but ordinary function containing g.drawstring("sd",0,0). when ever i click the mouse the string should appear at that point and it should move with the cursor until another click appears. my problem after clicking the string is not appearing … |
| | Hey everyone, Im working on a few java programs for a class and this one i can't seem to find an answer anywhere for. I need to write a program that roll's a dice, which is simple, then i have to have it roll the dice 20 times. Also simple. … |
| | Hey guys I need help with part 2 of my space invaders game. So far I have the missile shooting from the base but the missile is only fired once and that's it. I need to finish the code so that once the missile hits the top of the window … |
| | Hi, I have a program that has a package that is imported in a class called Control.All the files are compiling correctly apart from when I try to import a package. I am importing the package by [CODE]package carpkg;[/CODE] and in my main there is [CODE]GUI gui = new GUI[/CODE] … |
| | So there's this old programming assignment from last semester and he's giving extra credit if we finish it. Here's the assignment [url]http://www.cs.oswego.edu/~odendahl/coursework/csc212/201009/assignments/04.html[/url] I really want to finish this but it's the first time my class is trying to do it without pseudo code. Here's what I have so far for … |
| | Not so new anymore more with Java but as it gets more advanced (for me that at least) the tricks evade me. I would like to output sorted values into my GUI but two things are not happening. 1. Cannot get values to print in GUI but prints on screen … |
| | When I compile this program it says "cannot find symbol class Method Master", but when I run it, everything is fine. [CODE] /* *Andrew Davis *Nov. 19, 2010 */ import java.util.Scanner; public class Calculator { public static void main (String [] args) { Scanner keyboard = new Scanner(System.in); MethodMaster method … |
| | In class my teacher ran a program similar to this one. When I attempt to run this from home I get a message saying "No main classes found". I know there should be a main in the program but he ran a similar program without it. Just trying to get … |
| | hello people... simple doubt [CODE] class test { public static long testApp(long number) { return number; } }[/CODE] when i pass "45638" it returns perfectly but when i pass "23837472"; it's returning not in the range. what's the issue as long has very big value/range.. and how do i pass … |
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