35,618 Topics
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| | I am trying to make a histogram that represent the number of letter grades that are calculated. So the program reads in a csv file, pulls out the name, average grade and letter grade. From there it creates a histogram based on the letter Grades. Input: Alicia Marks,89,90,100,95,75,85,94,100,90,92 Bobby Ricks,98,79,87,79,9,98,7,19,98,78 … |
| | if input is 0 150 17 the last number is 17 i need program that find how many 17 in 0 to 150? output should be 2 NOTE the program should run for any 3 input number |
| | How to set that one panel contains three panels and each panels has buttons and textfield  |
 | Hi all, I have just finished with my tict-tac-toe program, and I thought I'd post it here if anybody fancy giving me any feedback. Also, I have a problem with printing the board, probably due to my lack of knowledge in using `printf` as opposed to `println`. Anyway this is … |
 | I would like to know how to design a program(a) to run outside another program(b), that will click a button that comes up while using the program(b). Reason being, is the program that I am using constantly asks me to hit next after scanning a product, so I want to … |
 | this is the problem code : import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.io.IOException; public class Prepared { public static void main(String[] args) { try { readerHelper r = readerHelper.GET_INSTANCE; System.out.print("enter username: "); String user = r.is().readLine(); System.out.print("enter password: "); String pass = r.is().readLine(); Connection con … |
| | the following is taken from joshua bloch's effective java. pg 82: public class InstrumentedHashSet<E> extends HashSet<E> { // The number of attempted element insertions private int addCount = 0; public InstrumentedHashSet() { } public InstrumentedHashSet(int initCap, float loadFactor) { super(initCap, loadFactor); } @Override public boolean add(E e) { addCount++; return … |
| | How to coding this? "fill the variabel with bufferedReader and for and will be stop if the variabel=="ZZ""  |
| | You will need to check that the four parameters entered by the user are blank, so you will do the same as you did before but four times. To Identify if the User Presses <enter> You have written a JAVA program that creates a CD object with four instance variables, … |
| | Hi friends, Can any one tell me the java program that how to convert Octa Decimal to HexaDecimal without using inbuild functions. I tried a lot but not successful. Please Please Please post the program... Thanks in advance.. |
 | Hello Im using the FileUtils.copyDirectory method but it gives me the error of "Failed to list contents of foldername". I know the folder exists and I can write there because creating a file works. What could be wrong? |
| | i am using xammp database. and i want to get last ID from my database so that i can insert new stuff in it. the code below doesnt get me the last it. its prints it is adding one next to last it. ex 7, 71, 711, 7111, 71111, but … |
 | I am making an examination system desktop application in Java Swing. I have a frame named 'show_class_question' frame. This frame is used to display questions and four options from database. Whenever user clicks 'Next' button I am calling this same frame (show_class_question) again and agian from itself (self - refrencing) … |
| | i have text field when i enter a value in it i want to retrive the values matching to the entred word from database and display those values in a pop up window am using jsp and struts oracle 10g database |
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| | I was wondering if you could give me advice, do i need to be extremely focused? also what do i start with, where do i start? |
 | hi im new to java.i wrote a simple programme and need a little help.i should enter an int as the input but when i entere a string, it gives an exception. Exception in thread "main" java.lang.NumberFormatException: For input string: i need a dialog box to be appeared when i enter … |
| | Hello, We were assigned a hw to come up with a linked list implementation for grades. We are supposed to ask the user how many students there are and then ask for 4 grades for each student and then come up with an avg in 2 different ways i.e sum/4 …  |
 | Hi All, I am attempting to execute a dtsx package using Java and I have the following line Process executionProcess = Runtime.getRuntime().exec("dtexec/f\"C:\\Projects\\EconAnalysisConferenceBoard\\EconAnalysisConferenceBoard\\EconAnalysisConferenceBoard\\ConferenceBoardETL.dtsx\""); I keep getting an error saying the file cannot be found but if I run the dtexec in command prompt with the exact same paths and file name … |
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| | How to get current user connected to a Liferay portal with the help of simple Java code ? |
| | I am working on a program which takes a text file as input and stores each word in a hash table along with a count of how many times the word occurs in the text. It seems to work fine until I attempt a file with more than 18 words, … |
| | I am making a string array so user can type whatever they want. the problem the code i have below user can enter &, alt, up, @, in string array. I want user to enter letters and numbers only, and 1st char has to be letter. I couldnt find any … |
| | import java.io.*; public class t1 { public static void main(String a[]) { int i; char c='a'; char[] ch={'a','b','c'}; for(i=0;i<3;i++){ System.out.println(ch[i]+" "); } //String s=c.toString(); //char cant be dereferenced String s=ch.toString(); System.out.println(" S : "+s); } } Q-1) I am getting an error while converting a character array to String aoject. … |
| | i wanted my program to show up in a Jframe the code reads the pixel color i want the frame to display red= pixel color blue= pixel color and green= pixel color and how would you make the background color of the frame change according the mouse movement for example … |
| | i have two classes. Main class and tester class. I have to create a textfield so your can enter there name. The problem is that in tester class i am getting error on add() method. is there simple fix for this? i want to create the textfield in tester class … |
 | Hi, I downloaded CDT 8.0.2 for Indigo and installed it through help->install software. But in right click on project->properties, I can't see C/C++ build option in the properties! What happened! |
| | Hi guys, I am not sure this is right or not. If I have one variable whose value is true or false and I want to use it in an if statement I could easily do if(variable1){ //do this and that } but I want to check 2 variables I … |
 | Alright so I am still kinda new to java I am working on a lottery program that will ask the user how many tickets they would like (default being five) and each ticket has a random set of numbers plus a jackpot number: this is the code have so far... … |
| | Well i'm having trouble with this code with the following lines: return new AccountID(this); return new Customer(this); ^These two from the clone method. Customer myCustomer = new Customer(newBank.Find(myAccountID)); ^Not sure what i'm doing wrong here, it is on 4 different methods of deposit, withdrawal etc. Not only that, but my … |
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