I am trying to write a program and the name variable can only store letters,dotes and spaces. But whenever I enter a space, the program doesn't work. Following is my code.
import java.util.Scanner; import java.util.*; public class Space { public static void main(String []args) { Scanner reader = new Scanner(System.in);
Here's the code: it's while loop inside a for loop to determine the proper length of a variable:
for (int i = 0; i < num; i++) { horse[i]=new thoroughbred(); boolean propernamelength = false; while (propernamelength==false){ String name = entry.getUserInput("Enter the name of horse "
[code]....
I was just wondering what was going on here -- I've initialized the variable, so why do I get this message? (actually the carat was under the variable name inside the parentheses.
The concept is simple. I wish to know how I could replicate a variable using a for loop which will have a new number assigned. Essentially, as the loop progresses it would create a copy of the same variable with a number at the end. Once
Something like this, variable1, variable2, variable3, variabl4, variable5
Once I have my five variable I will then be able to print them out
import java.util.Scanner; public class replicating_variable { public static void main(String[] args) { String variable1; Scanner input = new Scanner(System.in); for(int i = 0; i < 5; i++){
There's loads of problems with this. What I'm trying to do.
1) get a program to add the contents of an array together, preferably with a for loop and not the heavy handed version I've tried to use here.
2) get the for loop's output just once, since it won't compile or recognise the variable outside of the loop. How do I make the loop's 'counter' variable available everywhere?
public class retint { public static void main(String[] args){ int[] onetoTen = {1,2,3,4,5,6,7,8,9,10}; for (int i=0; i<10; i++) { int counter = (onetoTen[0] + onetoTen[1] + onetoTen[2] + onetoTen[3] + onetoTen[4] + onetoTen[5] + onetoTen[6] + onetoTen[7] + onetoTen[8] + onetoTen[9]); System.out.println(counter); } }
Terrible code, I know. There has to be a more efficient way.
I have a csv file and I want to insert the csv file into the database columns consist of date, description1, description2, amount1, amount2, narration.. but the problem is the narration is coming in second line in csv file due to which the data is not getting inserted into the database. So how to append the narration into the first line,I have enclosed the demo format of csv file and a code to read the csv file..
myFile.csv file:
20-5-2013,"Cash Rec. From abc","pymt",-500.00,, "Cash rec. from abc office",
20-5-2013,"Cash Rec. From xyz","rcpt",-5100.00,, "Cash rec. from xyz office",
I have the following code which always gives me java heap space error because of line number 65 due to string buffer append method in this line, I don't know why?
/* * To change this template, choose Tools | Templates * and open the template in the editor. */ import samy.*; import java.util.Scanner; public class InfixToPostfix { OrderedList list = new OrderedList(); Scanner input = new Scanner(System.in); public StringBuffer postfix = new StringBuffer();
How to output text to a file, so I had to do my own research on google, but the results I found were confusing. I finally got my code to write to a file, but I cannot figure out how to append a new line. I know what part of the code is incorrect, but I don't know how to fix it. here is what I have right now:
import java.io.IOException; import java.nio.file.Files; import java.nio.file.Paths; import java.util.Scanner; public class highscore { public static void main(String[] args) throws IOException {
[Code] ....
I can see the last two lines are telling the program to overwrite the first input with the second. Of course if I pick a different file name for the second output, I get another file with the second input, but I need to learn how to append as well.
I am having a bit of difficulty understanding/Using FileWriter. Now by my understanding in the API FileWriter allows to use write at the end of your file, if you have text in there already, correct?
I have a file with people info in it. And I created a GUI which allows people to input that data.
Java Code:
File file = new File("People.txt"); FileWriter fw = new FileWriter(file); People p = new People(firstName, lastName, email, sex)); fw.append(p); fw.close() mh_sh_highlight_all('java');
Now, I keep getting an error on the fw.append(p)
Java Code:
The method append(CharSequence) in the type Writer is not applicable for the arguments(People) mh_sh_highlight_all('java');
I know how to append text to a File using the true argument but I would like to be able to append to a certain line In the file.Basically I've made a simple html page with Image links to different sites. I'm trying to make an app that will take a new site as Input and append It to the html file before the </body> tags.
I'm using one method to take input from the user and append some text to it, then I am trying to return the value of the variable and use another method to print it out. But for some reason whenever I try doing this I can't print out anything and I only get a "null" output. Why this is happening?
package Homework3; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class Homework3 {
I am building a little application for personal use where I can track my finance. Now, what I would like to get is an always visible JTable "footer" OR horizontal space field attached to the bottom of the window. The idea is that scrolling down/up wouldn't affect it's visibility(like JTable header). Might a picture tell a thousand words: see attachment.
I am wondering, maybe JTable OR TableModel class has a property to solve this problem(I haven't found any)? Or shall I make another ScrollPane/JPanel? Which path of search shall I pursue?
I have a form with primefaces input text(p:inputText).Many of the input text values are of the type currency in dollars.When i try to use ,it mandates the user to include $ symbol prepended to the value.Is there any way using which on blur of the field the dollar symbol is prepended and the number gets formatted with proper commas.
The term "Local variable" is related to scope. That is a local variable is one which is defined in a certain block of code, and its scope is confined inside that block of code.And a "Member variable" is simple an instance variable.
I read in a discussion forum that when local variables are declared (example code below), their name reservation takes place in memory but they are not automatically initialized to anything. On the other hand, when member variables are declared, they are automatically initialized to null by default.
Java Code: public void myFunction () { int [] myInt; // A local, member variable (because "static" keyword is not there) declared } mh_sh_highlight_all('java');
So it seems that they are comparing local variables and member variables. While I think a member variable can also be be local in a block of code, isn't it?
I can't figure out why my code doesn't work. My task is to replace for example ä=>ae, using this method String.charAt(int index). So here is my code:
public class pich { public static void main(String[] args) { String text = "Die süße Hündin Leica läuft in die Höhle des fülligen Bären "+ "Iliyan (ein Übergrößenträger), der sie zum Teekränzchen eingeladen hat."+ " An ihrem Öhrchen trägt sie modisch eine Ähre."; String textOhneUmlaute = "";
[Code] ....
when I launch my code I get the same String and nothing has changed
I tried this but it only gives me one letter that corresponds to the number
package pkg2911homework.pkg1; import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner keys = new Scanner(System.in);