I'm trying to write a method that returns a number, given an uppercase letter as follows:
public static int getNumber(char uppercaseLetter)
The program is supposed to prompt the user to enter a phone number as a string. The input number may contain letters. The program translates a letter (upper- or lowercase) to a digit and leaves all other characters intact.
My code is below:
import java.util.*;
public class PhoneKeypad {
public static void main(String[] args){
System.out.print("Enter a string: ");
Scanner input = new Scanner(System.in);
String phNumber = input.next();
[Code] ....
I am getting these errors:
java.lang.ClassFormatError: Duplicate field name&signature in class file Chapter9/PhoneKeypad
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
I'm trying to output a ten digit phone number as a string on one file, and write another program to write it as a long because I don't know what value I need to use in order to get the code to run properly on either one.
I am trying to validate the phone number with a method called isValidAddress and whenever it gets to that line of code in the while loop I get a lot of red line java exceptions. I am referring to lines 130-138
I had to write a program for class using the method definition "public static char getNumber(char upperCaseLetter)" It compiles and runs but wont print out my final answer.
import java.util.Scanner; public class Phone_0104730303 { public static char getNumber(char upperCaseLetter) { char return_val = 0;
I am trying to make a phone number generator. I get the following error though when trying to compile.
my post
C:JAVA_PROGRAMMING_CODEcode1RandomPhoneNum>javac RandomPhoneNum.java RandomPhoneNum.java:23: cannot find symbol symbol : method toOctalString(int) location: class RandomPhoneNum strippedNum = toOctalString(num1); ^ 1 error
Here is the code so far
import java.util.Random; public class RandomPhoneNum { public static void main(String[] args) { System.out.println("This app prints out a random phone number.");
[Code] ....
Also, how did you people know about octal base numbers? I would never have known that. What I can do to improve my math ability?
I am new to java, and now i have an assignment. I have to parse a phone number like this--> (656) 345 6544 to 6563456544. I've writen the following code that works great with a while loop. Now i would like to know how can i make it work with a for loop.
and the code is import java.io.*; public class Tema { public static String removeChar(String str, int i) { String first= str.substring(0,i);
I got a phone number problem. I get a list of phone numbers and a word file containing words, how could I need to see if I could match the phone number to 7 letter words, then see if I can match the first 3 numbers to 3 letter words and then the last 4 numbers to 4 number words. I figured all that out so far. The last part of this assignment is to see if I could match a combination of words together to match the phone numbers.
Instruction: You work for a telemarketing company and you are required to write a JAVA program that will generate a random phone number. (talk about a real-world application)
-The phone number should consist of 10 digits -The first 3 are the area code and should not begin with 0, 8 or 9 -The second 3 digits should not be greater than 742 and not less than 100. -The last 4 digits can be any digits -Print the number using the following format: "(xxx)-xxx-xxxx", this way it will look like a real phone number (use decimal formatting)
by this : Generating Random Numbers Using arithmetic operations
I've been working on a personal project again in Unit 3 of my text book and this time they want me to make a random phone number generator. Here's the actual directions:
"Write an application that creates and prints a random phone number of the form XXX-XXX-XXXX.
Include the dashes in the output.
Do not let the first three digits contain an 8 or 9 (but don't be more restrictive than that), and make sure that the second set of three digits is not greater than 742.
Think through the easiest way to construct the phone number. Each digit does not have to be determined separately."
With this assignment I came across 2 problems:
1. What I tried was that since the first 3 numbers have to be a random number with no 8's or 9's I tried doing this algorithm:
The problem is that Java won't allow me to generate random numbers this way. Are there any easier ways of generating numbers that doesn't contain specific number (such as 8 or 9 in this case?)
2. I was thinking about this throughout the whole project and what if I generate a number such as 27 (less than 3 or 4 digit number) rather than 3 or 4 digit numbers? How would it show 0027 or 027 instead of 27 for the phone numbers?
import java.util.Random; public class pp0303 { public static void main (String[] args){ Random generator = new Random(); int first0, first1, first2, second, third, random0;
[Code] ....
RESULTS:
Exception in thread "main" java.lang.Error: Unresolved compilation problems: Cannot invoke replace(char, int) on the primitive type int Cannot invoke replace(char) on the primitive type int Syntax error on token "random0", delete this token at pp0303.main(pp0303.java:15)
I have a Database with Data of people (name, adress, phone number).
If a user enters a phone number (CLIENT) -> the correct person with the name and adress should appear.
I build up the infrastructure and now I'm at the point that I have to create a Webmethod for it. I just worked on projects like addition of two integers, hello "name", ... I think this example now is harder, BUT i can learn a lot!
I'm having a hard time with this problem, this is what I have, but I can not use two integers, I have to use one integer and a string...
This is the question:
Write a method called printStrings that accepts a String and a number of repetitions as parameters and prints that String the given number of times. For example, the call:
printStrings("abc", 5);
will print the following output: abcabcabcabcabc
This is what I attempted:
public class printStringsproject { public static void printStrings(int abc, int number) { for (int i = 1; i <= number; i++) { System.out.print("abc"); } } public static void main(String[] args) { printStrings(1, 5); } }
I'm having problems with the public static void main(String args[]) part. Everything else is correct before this, my teacher has checked that. I have been trying to research why it won't compile right and can't find any errors.
/* Chapter 6:Telephone Purpose:This project displays a telephone keypad you can use to type in a phone number. */ import java.awt.*; import java.datatransfer.*; import java.awt.event.*; import javax.swing.JOptionPane; public class Telephone extends Frame implements ActionListener
//read the file //make the numbers 1 string line //count the number of repetitiveness in the string for the numbers //display four lowest ones
import java.io.*; import java.util.*; public class Lottery2
[Code] ....
when I run it the array gets sorted but how do i keep the data in other words
what it is supposed to do is grab numbers from a file, and give me the lowest 4 numbers back. I know the numbers using the array but how do i pull out the lowest 4 and keep the data true no matter what numbers or how many of them are in the file.
I was wondering if there was a way to check/view messages from my phone. I'm trying to create a program that will be able either read messages from my phone, or reply to them. I'm trying to get this to work for a Window Phone, but I don't know if there is a difference between doing it on a Windows Phone or Android. Most of the topics that somewhat relate to what I'm doing are all Android based.
I've looked at AT Commands, SMS Gateways, but I'm still not sure if it's entirely possible.
I need a phonebook that allows the user to input up to 100 numbers but stop when they want to. I have the code for the array and input and output. I thought I had the do...while loop correct for asking the user if they want to input another name but its not working, even when you input "N" it still keeps going. Here's my code.
import java.util.Scanner; import java.util.ArrayList; public class PhoneEntry2 { int x; char repeat; final int maxContacts = 100; String[] pNums = new String[100];
I'm trying to come up with a method that would validate each turn a player makes. For a turn to be valid, it has to only contain numbers from 0 to 3(inclusive) and at least one digit must not be 0. Here is what I`ve come up with so far. For example, with "303" as the number and "101" as the turn, the turn would be valid and my method should return true, but it does not.
public static boolean turnIsValid (String number, String turn ){ boolean rep=false; int pos1=0; char min='0'; char max='3'; while(number.length()==turn.length()&&pos1<turn.length()){
In the above example number 123456789012 is masked to 12XXXXXX01 but the number 55555 remains same as length of 55555 is 5 and we will only mask the number whose length is between 10 to 12 .
I've to return some value as a string and some as a int, how is this possible? Here's my code:
public class Card { public void start(){ String [] suit = {"Spade","Club","Diamond","Heart"}; int [] number = {1,2,3,4,5,6,7,8,9,10,11,12,13};} public String getColour(){ String [] suit = {"Spade","Club","Diamond","Heart"};
[Code] .....
So at the top, i've set it to return value as string because of the King Jack Queen and Ace, but i also have to return as numbers(int). And also i'm using a loop to read all the numbers, is there any other way?
I am trying to write a regular expression for a text which has both String and number... like abc1234, xyz987, gh1052 etc. And the string usually contains 2 or 3 characters.
What I need is two Strings one containing the text (abc, xyz, gh etc) and other containing number (1234, 987, 1052, etc.). Have written the code below. but doesn't seem to work.
I have a program for a phone directory. It needs to add, delete, append, and edit telephone records. I've gotten it to write and search the files. Just need to get it to delete and edit them.
This particular program is supposed to prompt the user to input either an uppercase or lowercase Y to process a phone number, they are then prompted to enter the character representation of a phone number (like CALL HOME would be 225-5466), this repeats until the user enters something other than the letter Y. All of the words entered are to be stored into a single array. The program is then to convert these words in the array to actual phone numbers. Here is what I have so far.
import java.util.*; public class Program1 { public static void main(String[] args) { Scanner input = new Scanner(System.in); String begin; int phoneNumber = number.convertNum();
[Code] ....
I realize that the second method doesn't have anything to return yet, I just wanted to put that in there while I was doing things that I actually know how to do ha. The convertNum() method is supposed to be the method with which the array of characters is converted to phone numbers.
I'm still trying to think my way through this. I would think it'd be easier to store the inputs from the user as individual letters rather than words for the sake of converting to phone numbers.
Also, we are only supposed to recognize the first 7 letters of each word that is entered, like the CALL HOME example, there are 8 letters but it's still a seven digit phone number, so I'm not sure how that would work.
Also, when printing the phone numbers after they've been converted, we're supposed to print the hyphen after the third number, I have no clue how that would be done from an array.
Some of the numbers can be converted from int to string , other cant. My problem is in if (input.length() == 3) and if (input.length() == 4. Basically having problems printing the 3 digit and 4 digit
public static void main(String[] args) { System.out.print("Skriv: "); Scanner console = new Scanner(System.in); String input = console.nextLine(); int firstDigit = 0; int secondDigit = 0; int thirdDigit = 0; int lastDigit = 0;
the number of occurrences of a specified character in a string...i tried to do the program occurrences in a given string and i tried the code as below.
code:
import java.util.*; public class Occurrence { public static void main(String[] args) { Scanner input = new Scanner(System.in);
This particular program is supposed to prompt the user to input either an uppercase or lowercase Y to process a phone number, they are then prompted to enter the character representation of a phone number (like CALL HOME would be 225-5466), this repeats until the user enters something other than the letter Y. All of the words entered are to be stored into a single array. The program is then to convert these words in the array to actual phone numbers.
import java.util.*; public class Program1 { public static void main(String[] args) { Scanner input = new Scanner(System.in); String begin; int phoneNumber = number.convertNum(); System.out.println("Please enter an uppercase or lowercase Y when you are ready to enter a telephone number: ");
[code]....
I realize that the second method doesn't have anything to return yet, I just wanted to put that in there while I was doing things that I actually know how to do ha. The convertNum() method is supposed to be the method with which the array of characters is converted to phone numbers.
would think it'd be easier to store the inputs from the user as individual letters rather than words for the sake of converting to phone numbers.
Also, we are only supposed to recognize the first 7 letters of each word that is entered, like the CALL HOME example, there are 8 letters but it's still a seven digit phone number, so I'm not sure how that would work.Also, when printing the phone numbers after they've been converted, we're supposed to print the hyphen after the third number, I have no clue how that would be done from an array.
