balmark

so i have a little issue here. i have a program that creates a list of random numbers, for sake of example here it is: [CODE] public class RandomSeq { public static void main(String[] args) { int n = Integer.parseInt(args[0]); for (int i = 0; i < n; i++) System.out.println(Math.random()); …

Hi, I'm a bit new to java and I would like to make a program that save's and load the saved data that the user had inputted in my java program. For example I done a sort of a Bank System and when I close my program and restart it …

hello can you help me when i click the add button it will not add to the database.it will generate an error..can you help me please hoping for your positive responds...here's my code,please see my attachment.... [CODE] import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; import javax.swing.JPanel.*; import java.sql.*; public …

Hello, I need to read in objects from a binary file and place those objects into an ArrayList. Not sure on how to go about adding the objects - this is what I have so far: [CODE]ArrayList<MailingLabel> arrayOfMailingLabels = new ArrayList<MailingLabel>(); try { ObjectInputStream in = new ObjectInputStream(new FileInputStream("labels.dat")); while …

Hi, I have a rather large binary file that I am attempting to read in, but I only want to read in the first 100 characters or so. I've tried searching the internet for help or an example, but I've only found examples that read in the entire file...and this …

So doing my first year of software engineering at Uni and am having a little trouble with the old Java, Basically I need to use the Calendar class to call todays date, and then store it in a variable, Iv stumbled upon this bit of code but don’t really understand …

Hi, I wanted to change the color of the first two rows of a Jtable .How do i achieve that? I have written the follow: [CODE] TableCellRenderer render1 = null; render1 = new myCellRenderer(); [/CODE] And the renderer is written as : [CODE] class myCellRenderer extends DefaultTableCellRenderer implements TableCellRenderer { …

Hi, I've created a Web Service application inside Jboss 4.2.2-GA and I want to set up the jboss log4j configuration so that my Web Service logs inside a custom log file (not inside the server.xml). To do this I've altered the jboss-log4j.xml file to create another appender. This file is …

I'm trying to develop an editor which you can insert text and draw shapes on. To do this, I'm using a JPanel as the main panel, and listening to mouse actions I add new JPanels into it. I draw the shapes on the small panels using getGraphics(). But the main …

The commonly used syntax: [CODE=Java] public class Foo { private int x; public Foo(int x) { this.x=x; } } [/CODE] Is actually "flawed." If you have an anonymous inner class inside the Foo constructor (i.e. if this were a GUI code and you were adding an ActionListener) then the private …

hi everybody!!!!!!! can anyone tell me how do we test the data type of variables in java, like if a variable is a string, the system prints out that this variable is string or not. more especially how can we test this on primitive data type? waiting for your replies!!!

[code] public boolean isFull(){ //generally full if(parcelIsFull() || hcparcelIsFull() || noSharingParcel()) return true; } [/code] I want to know why i get this error missing return statement I have the value written as 'true' boolean as the returning value.

hi is it possible to limit the lenght of a JtextField? thanks

im new to java ..im learning myself.. i want the source code for 12hr to24hr conversion of time.. ie if i give input 1pm then my program should gives this in 24hr version as 13hr..... i hope u pepole will help me.... Regards kavitha