Strings And Char Replacement
Jan 31, 2014Character replacement in string.If I have a String "aaaaa" and what to replace just one "a",with a different character say "J" how can I do this? Everything I've tried replaces all not just one
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Take Replacement String Entered By User And Print Out New String
May 22, 2014I'm having trouble with the last few lines of the code. It's supposed to take a replacement string entered by the user and print out the new string. For some reason it's now allowing me to enter a replacement string
import java.util.Scanner;
public class Project02 {
public static void main(String[] args) {
Scanner keyboard = new Scanner(System.in);
System.out.print("Enter a long string: ");
String lString = keyboard.nextLine();
[Code] ....
Output:
Enter a long string: the quick brown fox jumped over the lazy dog
Enter a substring: jumped
Length of your string: 44
Length of your substring: 6
Starting position of your substring in string: 20
String before your substring: the quick brown fox
String after your substring: over the lazy dog
Enter a position between 0 and 43: 18
The character at position 18 is x
Enter a replacement string: Your new string is: the quick brown fox over the lazy dog <------ isn't taking user input
How To Find Whether Strings Contained In Array Of Strings Constitute A Similar Character Or Not
Aug 25, 2014I am having an array of strings and i want to find out whether these strings contained in the array contain a similar character or not.For example i am having following strings in the array of string:
aadafbd
dsfgdfbvc
sdfgyub
fhjgbjhjd
my program should provide following result: 3 because i have 3 characters which are similar in all the strings of the array(f,b,d).
Sorting Lowercase Strings Before Uppercase Strings
Mar 26, 2014I can sort strings in a collection by uppercase and then lowercase though I was wondering if there is any way of doing it in reverse, sorting by lowercase then by uppercase.
View Replies View RelatedInt From Char Mapping
Apr 5, 2014When casting a char which is read from a file to an int, can i assume that the mapping used will be ASCII? I've learned that unicode uses ASCII mappings for the characters that overlap.
Are there any other possibilities for int values of one character? I still have trouble understanding character encodings.
Limiting A Char
Oct 20, 2014I was asigned to make a code that would limit the input to 1 character when asked for the initial of your middle name. So far I have the code ask for your first name then your last name and out put "Hello" firstname+last name. Im trying to add an 1 character middle itnitial in there.
View Replies View RelatedConverting Int To A Char
Mar 3, 2015I was reading about the char data type in Java. I know that an unsigned 16 bit integer is used to represent a char. So we can write the assignments below:
char a = 65; // a will get the value 'A'
But the limit of the char value is 65535.
So I've tried out a few things with char and trying to understand them but I'm not sure how they work.
char a =(char) 70000;
char b = (char) -1;
In the first case I thought that 70000 % 65535 would happen internally and the unicode character present at that location would get stored in 'a' but if I do that I get the answer of 70000 % 65535 as 4465. But when I display 'a' it shows me the output as '?'. Clearly '?' isn't at 4465.
In the second case I have no clue what's happening but somehow when I display 'b' it shows me '?' again.
Char To String
Oct 14, 2014I need making char[] to a string im not entirely sure what to change i'm just suppose to use a string value but the upperclassmen used char:
char[] number = clear.toLowerCase().toCharArray();
for(int c = 0; c < number.length; c++) {
if(digit[c] < 'a' || digit[c] > 'z')
continue;
[code]...
How To Put All Char In Loop To String
Mar 16, 2014I can't figure out how to have all of the random characters generated to go into the String. Below I can only get the last character to covert over to a String.
System.out.println("Original random character string:");
String printingString = "a";
for (int i = 0; i < 50; i++)//loop to obtain 50 random characters
{
char randomChar = (char) ((Math.random() * 255) +32);
System.out.print(randomChar);
printingString = Character.toString(randomChar); }
return printingString; }
Converting Char To Uppercase?
Jan 21, 2015I'm trying to write something to will convert my Scanner input which will be either a string or a char toUpperCase but it is not working.
import java.io.File;
import java.util.Scanner;
public class UpperCase {
public static void main(String [] args) {
Scanner kb = new Scanner(System.in);
char reply;
[code]....
Char Array Goes Out Of Bounds
Jan 16, 2014Goal this time is to take a charArray, copy it into another charArray while reversing the things in it.
E.g. charArray["!ollaH"] into charArrayNew["Hallo!"]
My first idea was to revert the stuff in the Array with a ! cause i saw earlier that u can work with that too revert booleans. Sadly i didnt happen to make it work.
Next thing i thought of was a for loop to go trough the charArray and copy every section into charArrayNew just at the opposite end.
Java Code:
import java.util.Arrays;
public class aufgabe43 {
public static void main(String[] asgr){
char[] charArray
[Code] .....
Eclipse doesn't show any errors, and as u told me last time i did include import java.util.Arrays; to output the array in the end.
When i try to compile the code eclipse returns with an error
Java Code:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 68
at aufgabe43.main(aufgabe43.java:8) mh_sh_highlight_all('java');
Which I frankly don't understand since the array . Length is exactly the same.
Get User Input For A Char Value?
Jan 9, 2015I am trying to get user input for a char value and am having some difficulty getting input for a char value.
Java Code:
//imports packages
import java.io.*;
import java.text.DecimalFormat;
class ModuleCulminatingTask {
public static void main (String args []) {
//declares variables
float var3, var4;
long var5 = (int)(Math.random()*10);
[code]....
Return Char To Main
Oct 14, 2014public static void main(String[] args) {
Scanner kb = new Scanner(System.in);
int hours = getHours(kb);
char major = getMajor(kb);
[code]....
I'm trying to return a char c,o, or x if that is their "major code" that the scanner grabbed.
How To Check Char Sequence
Jun 12, 2014I what to check if value is not equal to CharSequence value
I try this but getting error:
Java Code:
private CharSequence testvalue = "";
if (!isEqualTo("BCDEF".contains(testvalue))){
}
public boolean isEqualTo(String s_src, String s_compareTo) {
boolean flag = false;
[Code] .....
Conversion Char To Double Value
Mar 31, 2015I need to understand the java Conversion.
I have a char[] containing ASCII characters that need to be converted into int value and double value.
The int value are always stored in 1 char size like 'j'. I extracted it succesffully by converting the char in a ascii bytearray and then used: Integer.parseInt(sb.toString().replace("0x", ""), 16);
How can I get the Value as double when i used the char[] with size 2 or 4 ?
Example : final char[] charValue = { 'u', ' ', '}','+' }; what is the associate Double value ?
Example : final char[] charValue = { 'T', ' ' }; what is the associate Double value ?
Example : final char[] charValue = { 'T', ' ' }; what is the associate int value ?
Escape Backslash For Char
Mar 1, 2014You can also use an escape code if you want to represent a character that can't be typed in as a literal, including the characters for linefeed, newline, horizontal tab,backspace, and single quotes.
char d = '
'; // A newline
char c = '"'; // A double quote
But for the newline code that is escaped above, it still gives me a new line. Is this a typo? Shouldn't it be '' for it to be escaped?
Getting Char At A Location In String
Oct 21, 2014I found a fun program online and something so simple is giving me an issue. I c++ it is pretty simple fix, I can just call the strings location like an array. In java this is not the case. So far i have tried:
myString.charAt();
myString.indexOf();
There are a few other I found on google but I forget at the moment. I am just trying to close the gap on a string. It was a full sentence and I used replaceAll a few times to get several words I didn't want in the file out.
Amending Whole Words To Char
Apr 15, 2014So my goal is to build a word search here. The road block I have run into is how to save words, input from user, into an array. Then once I figure that out I need to try and arrange them in such a way so that they will fit into my array without screwing with one another. It does not have to be working exceedingly well I mean really it can be assumed that the users will not try to screw the program up. Ie one or two words and a fairly large table will be all the input. Here is the program as of now:
import java.util.Random;
import java.util.Scanner;
public class BuildWS
{
int r;
int c;
char[][] array;
String query = " ";
[code]....
Least Significant Bit / Char Array
Oct 29, 2014So I am working on a project for my Java course and for whatever reason, I am absolutely struggling with this assignment. I've made some progress but I can't seem to completely wrap my head around the algorithm I'm being told to use. I feel that everything is correct up to a particular point.I believe I am having issues moving a char array into a char matrix.
package edu.cofc.csci221.ui;
import java.lang.*;
public class Decoder
{
private int[][] M;
[code]...
Would I just need to loop through lsb one at a time and assign them to sequential spots within D? Basically call my get binary value and such in the outer loop and then use the inner to loop through both arrays and reassign values?
2D Char Array - Getting Information From One To Other
Apr 10, 2014I'm trying to take the information from one 2d char array and put it into another char array but instead of traversing the array left to right I want the new array to be top to bottom.
Example fg would be fh
hi gi
I'm having trouble getting the information from one to the other.
[code]public static char[][] translateIt(char[][] english){
int rows = english.length;
int columns = english[0].length;
char[][] chinese = new char[columns][rows];
for(int j=0; j < columns; j++){
for (int i = 0; i < rows; i++){
//chinese[i][j] = english; this is commented out because it didn't work.
}//Ending bracket of columns for loop
}//Ending bracket of rows for loop
return chinese;
}//Ending bracket of translateIt[code]
How To Do For Loop With Char Array
Apr 15, 2015How can I display this result.aJohny
I have array contain numberi create new char array and i want to check if a number is >= 90 in array then input A at the same index in char arraythen second part i want to check if char array contain "A" then a = a + 1.
The result is like this:
A: 5
B: 29
C: 38
D: 24
E: 12
F: 17
public class Test {
public static char[] grades(int[] getMarks) {
char[] grade = new char[getMarks.length];
for (int i = 0; i < getMarks.length; i++) {
if (getMarks[i] >= 90) {
[Code] .....
Comparing Char In If That Convert To String
Apr 30, 2014what will i compare in if statemet is the 1st letter of each if i have code="a" and name="Angelina" first letter of each is "a" and "A" then in convert it to string so that i can make it uppercase but when i compare it in if statement it always go into "not x" but the ouput that im getting is x=A y=A then it always direct me into else statement.
String code = "a";
String name = "Angelina";
char c = code.charAt(0);
char n = name.charAt(0);
[code]...
Store Content Of JTextField To Char
Mar 9, 2015I was trying to store the content JTextField on char..... Here's the instruction of program--->>create a GUI program that convert letter into corresponding no. EXAMPLE:
if user enter "c" then it will output "3"......
like a=1,b=2,c=3,......
Here's my code
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class convert extends JFrame {
private static final int width = 400;
private static final int height = 300;
private JLabel EN,EQN;
[code]....
Check How Many Times Char Is Used In The String
Apr 1, 2014I tried to make a program that takes a string str, and char a and checks how many times the char is used in the string.
Example: the string Welcome and the letter e, is 2 times. so the program should print 2.
It compiles but when I run it and enter the information, i cannot get the printing line out.
Heres my code:
import java.util.Scanner;
class program
{
public static void main(String[] args) {
Scanner user_input=new Scanner(System.in);
String str;
String b;
System.out.print("Please enter a word");
[Code] .....
How To Compare Two Char Type Values?
Feb 8, 2015how can i compare two char type variables, ignoring the Case?
View Replies View RelatedUnable To Count Each Char In A String
Jun 5, 2014I am trying to count each char in a string. For example A = 1, B =2, C=3, I am not looking for their binary value. So the word "At" would
AT= (A=1 +T=20)=21.
I know how to do this in C++ because I am able to treat a string like an array.
Java Code: void printFile()
{
int sum=0;
String line;
for(char cr ='A';cr<'Z';cr++)
{
for(int i=0; i<myList.size();i++)
[Code]...