My interest in Java leads me to try and print numbers from 1-100. The output should show all numbers from 1-100 and each number that is divisible by by 13 should be replaced with a string "Fuzzy".
public class Fuzzy {
public static void main (String[]args){
for(int i = 0; i < 100; i++)
if(i % 13==0)
System.out.print(i + "fuzzy");
}
}
For some reason, the averages aren't calculating correctly. I'm aware I need to convert to double if I'm dividing by an odd amount but that itself isn't the issue. It's just simple easy divisible numbers that are not being calculated correctly. For instance, (10 + 10 + 10 + 50) / 4 = should be 2 but I get 10.
Here is the code:
import java.util.Scanner;
public class Avg {
public static void main(String[] args){
Scanner inputGains = new Scanner(System.in);
int userInput = inputGains.nextInt();
[Code] ....
I am having problems with writing a simple program to see if a number is divisible by 6.
public void run() {
println("This program will display all numbers divisible by");
println(" 6 between 1 and 100.");
int x =1;
boolean divide =(x%6==0);
[Code] ....
It is telling that every number is not divisable by 6?
I have a coauthorship network and I want to replace the authors names with numbers.Part of my datadet:
1992,M_DINE,R_LEIGH,P_HUET,A_LINDE,D_LINDE
1992,C_BURGESS,J_CLINE,M_LUTY
1992,M_DINE,R_LEIGH,P_HUET,A_LINDE,D_LINDE
1992,F_ZWIRNER
1992,O_HERNANDEZ
...
I want the result to be sth like this:
1992 1,2,3,4
1992 5,67
....
and a table of mappings
M_DINE 1
R_LEIGH 2
P_HUET 3
....
I give my dataset in csv (or text) format to my program but it says "(The system cannot find the file specified)" even though the file exists.
what should I do?
here is my code:
Java Code: public class ReadCSV {
HashMap<String, Integer> authorList = new HashMap<>();
File file = new File("d:/Course/thesis/predict/whole.scv");
int authorCounter = 0;
public static void main(String[] args) {
ReadCSV obj = new ReadCSV();
[Code]...
I have to make a program that determines whether an integer put in by the user is odd, divisble by 3 or divisble by 4..
import java.text.DecimalFormat;
import java.util.Scanner;
public class numbers {
public static void main (String[] args)
[Code] ....
I'm getting the error that div3 hasn't been initialized ... How do I even implement code to determine whether the number is divisible by 4 or 3?
I have been struggling to find out what to change to allow my code to find the GCF of two numbers. The instance variable in the class is num, so I need to find the GCF of a and num. It works for the example problem of 25 and 15, returning 5, however it will not work for other problems.
public int findGCD(int a)
{
int result = 0;
int newNum = num;
if ((a > num) && (a % num != 0))
[Code] .....
How can I change the value of
String str = "1234|U||45|||"
into
String str = "1234|U| |45| | |"
How do u find the binary of negative numbers? I already did it for positive numbers,?
View Replies View RelatedHow to find fifty biggest numbers in the array?
View Replies View Relatedhow to replace all the command that is found on a string between 2 double quotes? for example I have a text file that contains data like as following
A,"-16,12","-178,245","-15,506"
B,"-16,12","-178,245","-15,506"
C,0, 0,1
I need an output like this:
A,"-16.12","-178.245","-15.506"
B,"-16.12","-178.245","-15.506"
C,0, 0,1
I did this but without regular expression. It seems to me that a regular expression it's more elegant than to parse every line and replace it.
My current problem is when im trying to choose case 2 and call markItemOnLoan i cant seem to find the title i want after i enter a few. I will include all of my code but i have mentioned what I am currently stuck on :
import java.util.Scanner;
public class Library {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
MediaItem mCall = new MediaItem();
Library call = new Library();// makes instance
[code]....
I have an assessment for college, the part of my code that im struggling with is the part where the user enter their first name followed by a space and then their second name. I m using ---------------fullname = JOptionPane.showInputDialog("enter your firstname followed by a space then your second name " ); ------------- to capture this. the issue is if the user only enter 1 name I need to output an error. the issue is I cant find a way to tell if the user entered a second name. This is what I have so far:
public void makename() {
// makes an inputbox to ask their name
fullname = JOptionPane.showInputDialog("enter your firstname followed by a space then your second name " );
//separates the first and second name into 2 strings in order to make the username
[code]....
The problem is it accepts anything I type in without causing an error. What should I type in to stop this? ive tried anything but I cant find a way to tell if a surname has been entered or not.
The problem asks me to write an expression whose value is the number of characters in a specific string. Normally, it would be a simple task of using the String.length() method, but that is not allowed. In fact, no variable declaration is allowed (it's a MyProgrammingLab assignment, if any are familiar).
Simply put, if I have a String "This is a sample string." is it possible to find the length without assigning it to anything?
In other words, the code must be able to go into the parentheses of System.out.println( ); and correctly print the length of said string.
The answer, for those curious:
System.out.println("This is a sample string.".length());
I didn't know the .length() method could be called on a literal. Now if only I could find out how to close this thread...
I'm trying to find a word in an array of char.....but I'm stuck. How to formulate the code to step through the array and pick out the word. This is what I have so far...
public static void searchAcross(String string, char[][] puzzle) {
// Gets the number of rows in the matrix
int rowLength = puzzle.length;
//Gets the number of columns in the matrix.
int colLength = puzzle[0].length;
[Code] ....
import javax.swing.*;
public class mostFrequent{
public static void main(String args[]){
char index;
String s;
s = JOptionPane.showInputDialog("Enter String here");
int currFrequency = 0;
for(index = 0; index<s.length(); index = index++){
int i = 0;
for(i = 'A'; i<='Z'; i++){
if(i==s.charAt(index)){
currFrequency = currFrequency + 1;
}
}
}
System.out.println("end");
}
}
//my code so far
The problem is i want to replace some string text with foreign characters, but JTextArea returns plainText.
For Example:
str = new String();
str.replace('e', 'é');
textArea.setText(str);
but textArea returns plainText.
Write a program to find the number of and sum of all integers greater than 100 and less than 200 that are divisible by 7.
View Replies View RelatedI am new to java and do not understand how to use filters very well. I need to write a code that determines if an integer is not divisible by some value. A filter also contains an upstream filter so that this filter can be part of a chain of filters.
View Replies View RelatedWriting a Java program to find sum of numbers in a random string.
(Input=abc235^%$q!12&3 output=250)
If a number has - sign then u should consider it as a negative number.(Input=abc-12t%^&$dcf22 Output=10)
I am trying to code using error handling and I am a bit confused on how to go about doing it correctly. My code converts a string that has all numbers into an integer and the error handling should recognize that if it isn't a proper number and ask the user to try again or enter 'q' to quit.Do I place a throw new exception in the try block and put conditionals like if charAt(i) is some letter or a symbol then throw new exception?
Java Code:
import java.util.Scanner;
public class practice {
public static void main(String[] args) {
Integer finalValue = null;
boolean validValue = false;
Scanner scan = new Scanner(System.in);
int result = 0;
[code]....
How to convert numbers into string without using an array and a method ....
Example of arrayed code:
The code here is working but i want to use the other way for not using array just like switches and if and loops only.
I made a code here but i did'nt run what i want to output .....
package UnderPackage;
import java.util.Scanner;
public class NumberToWords {
static Scanner input = new Scanner(System.in);
public static void main(String[] args) {
int number;
int b;
[Code] ....
I am trying to do is extract numbers that are in word format in a long String, i.e. a song, and return each of their numerical values, in order to add them all up. So I'd like to calculate the sum of all of the numbers in the text. This has to work for any piece of text and for all numbers up to a trillion.
So I broke the string down into tokens and stored them in a String []. And I divided up the possible numbers in word format into:
LARGEST: thousand, million, billion, trillion
HUNDRED: hundred
TENS: twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety
UNITS: one, two, three, four, five, six, seven, eight, nine
SPECIALS: ten, eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen
I believe that these are the only words that it will need to recognize. I began reading the tokenized string from right to left and then when I came across a unit, special or tens as the first number I hit, I would then set it's numerical value and check if the word before was also a number and whether to add or multiply etc. i.e. First number hit is a two, if the number before is sixty, then I would just add it to sixty and check the word before that and so on.
However, when implementing it, it seems like an extremely long way around it. How I could implement this in a swifter manner? An example of it working would be:
"Nine Million rockets turned Three times and met Twenty Two Aliens", it would extract, Twenty Two as 2, then 20 = 22, then extract Three as 3, and then Nine Million as 1,000,000 x 9 = 9,000,000
9,000,000 + 22 + 3 = 9,000,025
I need a Java algorithm that converts a string of numbers into text. It is related to how a phone keypad works where pressing 2 three times creates the letter "c" or pressing 4 one time creates the letter "g". For example a string of numbers "44335557075557777" should decode where 0 equates to a space.
View Replies View Relatedwrite the logic in the below given Java method.
Public static boolean updateNetMap(String filepath, String nodename){
// check the file pointed by filepath to have entry for nodename.
// if it is there, get the start line no and end line no
// Based on the line nos, need logic to remove the contents from the file.
}
Below is the sample node entry, which we need to identify and delete (here nodename is WAS_CD1):
WAS_CD1:
:conn.retry.stwait=00.00.00:
:conn.retry.stattempts=6:
:conn.retry.ltwait=00.00.00:
:conn.retry.ltattempts=6:
:tcp.max.time.to.wait=0:
[Code]...
I don't want to use an array. I do not know of a function built into Java to allow me to do this.
View Replies View RelatedI'm trying to put together a method that formats telelphone numbers, but there's a part of my code that not working. If I enter (305)912-5458 into the variable phoneNumb I get an index is out of range error. I added a lot of system out messages so that I can try to get an idea of why the code was crashing.
public static void main(String[] args) {
int intBegin = 0;
int intEnd = 1;
int length;
String charact;
StringBuilder numbuilder = new StringBuilder();
[Code] .....
The error message I'm getting is:
run:
The length is 13
intBegin is at 0
intEnd is at 1
index is at 0
Charcter ( was not inserted
[Code] ....