I just need to write a simple program/function that replaces certain letters from a string (i.e. censor( "college", "aeiou" ) returns "cllg"). I'm trying to get the code right first, and then write a function for it.I basically just thought that I would iterate over the first string, and once I had the first character, I would then iterate over the second string, to see if the character exists. I'm getting a "dead code" error on my second loop because I put the second "break."
public class ap {
public static void main(String [] args){
String s = "Hello";
String s2 = "aeiou";
So basically, if a line in a text file contains a certain string, that specific line will be deleted. It should probably be similair to this method?
Java Code:
/** * Replace text. * @param replace * The text to replace. * @param replaceWith * The text to replace with. */ public static void replaceSelected(String replace, String replaceWith) { try { BufferedReader file = new BufferedReader(new FileReader("data/replacer.txt"));
I want to remove all numeric number in String text
String text = She was born in 1964,and now her age is 55; String delim = ","; StringTokenizer stringTok = new StringTokenizer(text, delim); String f1 = "%-40s"; String h1 = String.format(f1, "Token list");
I am currently trying to make a calculator in Java. I want to use the String split method to tokenize the string of characters inputted. I thought I was using the String split method wrongly, because I had surrounded the characters I wanted to delimit with square brackets. However, when I removed the square brackets, the code threw an exception when I pressed the equal button. The exception was a PatternSyntaxException exception. Am I using the String split method wrongly? And why is the exception thrown? Here is my code:
import javax.swing.*;//import the packages needed for gui import java.awt.*; import java.awt.event.*; import java.util.Arrays; import java.util.List; import static java.lang.Math.*; public class CalculatorCopy { public static void main(String[] args) {
I am using a TreeSet to tokenize a string. The output is sorted with numeric first followed by words
E.g. 13 26 45 and before etc.....................
Is there a tidy way to remove the numeric?
Last bit of my code is :-
// print the words separating them with a space for(String word : words) { System.out.print(word + " "); } } catch (FileNotFoundException fnfe) { System.err.println("Cannot read the input file - pass a valid file name"); }
Question 1: I am working on an assignment where I have to remove an item from a String array (see code below). When I try to remove an item after entering it I get the following error "java.lang.NullPointerException." I am not sure how to correct this error.
Question 2: In addition, I am having trouble figuring out how to count the number of occurrences of each string in the array and print the counts. I've been looking at other posts but they are more advanced and I have not yet learned how to use some of the tools they are referring to.
private void removeFlower(String flowerPack[]) { // TODO: Remove a flower that is specified by the user Scanner input=new Scanner(System.in); System.out.println(); System.out.println("Please enter the name of the flower you would like to remove:
I'm trying to loop through a string and depending on the character, add a JLabel to a game. The problem is the character 'L' represents a lantern but is also used in the reply the game gives which is "LOOKREPLY". I've tried to use some code to ignore the LOOKREPLY bit but it's not working. Here's what I've tried.
But the first image on all of the JLabels is always a lantern, which is what L represents. As it's only 1 lantern this leads me to believe that it's ignoring the first 'L' but for some reason it's not ignoring the 'L' at the end of LOOKREPLY.
As of right now my code can take characters from a string to an array from a string like "ABCD" but the project says I have to take it from a string like "A B C D" how can I correct my code to grab the characters from a single spaced line?
Scanner sc = new Scanner(System.in); System.out.println("Enter Order of Cars:"); String carsInput = sc.next(); int x = carsInput.length(); int[] cars = new int[x]; for (int i=0; i < cars.length; i++) { cars[i] = carsInput.charAt(i)-64; }
So what my program is supposed to do is take a number inputted by the use and then take a phrase. It then changes that phrases letter by the number inputted prior for example if you type in 2 as your int and Hello as your phrase you should get JGNNQ, which i can do. but the problem is that when i run it, it outputs like this:
J G N N Q
As separate characters how can I combine those characters in 1 string so it looks like JGNNQ? this is my code
import java.util.Scanner; public class Dcod_MAin { private static final Object[] String = null; public static void main(String[] args){ Scanner input = new Scanner (System.in); System.out.println("What is the day of the month"); int shift;
I need to make a string filled with naughts and crosses like this one : "xxx ooo xox". There are 3 groups separated with a space. how to fill the string randomly ?
I have to check a String input from the user in the form of firstName lastName (i.e. John Smith). I have to check for an exception called NonAlphabeticCharacterException that gets thrown if there is anything but a number in that string. This is what I have right now but should I create an array of char for the alphabet and then check the whole string for non alphabetic characters?
for(int i=0; i<name.length(); i++) { if()){ throw new NonAlphabeticCharactersException("Non-alphabetic character found"); } }
I am trying to count the number of non_blank characters in a string. If there are no leading blank spaces it works fine but say i add three spaces in front it doubles the non blank characters.
import java.io.*; import java.util.*; public class countCharacters { public static void main(String[] args) throws Exception { String str1; int count; count = 0;
I am trying to do a program that takes all of the chars from a string and orders them in alphabetical order. It works fine, but when a is a last letter of a string it isn't being sorted.
Example: bcba = bbca, omnibus = bimnous (here u is in wrong place)
Here is my code:
public class sorty{ public static void sort(char[] a, int low, int high){ int i = low; int j = high; if (j - i < 2) return; int m = (j+i)/2; char p = a[m];
Error:public String front3(String str) { ^^^^^^^^^^^^^^^^^^ This method must return a result of type String
Possible problem: the if-statement structure may theoretically allow a run to reach the end of the method without calling return. Consider adding a last line in the method return some_value; so a value is always returned.
I am trying to change an input String to an array of characters, but it only stores the word before the space into the array. Here is the code:
Scanner scanner = new Scanner(System.in); System.out.println(" Enter text: " ); String text = scanner.next(); char[] characterArray = text.toCharArray(); // convert string to array of characters String char = ""; for( i = 0; i < characterArray.length; i++) { char = char + characterArray[i] } System.out.println(char);
Just typing hello gives me hello, but when I type hello world it does not type in the word "world".I am trying to change an input String to an array of characters, but it only stores the word before the space into the array.Here is the code:
Scanner scanner = new Scanner(System.in); System.out.println(" Enter text: " ); String text = scanner.next(); char[] characterArray = text.toCharArray(); // convert string to array of characters String char = ""; for( i = 0; i < characterArray.length; i++) { char = char + characterArray[i] } System.out.println(char);
Just typing hello gives me hello, but when I type hello world it does not type in the word "world".
I was trying to create a java program which can remove the repeated characters in a String. For ex-
Input: kamehamehaaa Output: kameh
Here is my code:-
import java.util.Scanner; class replace { public static void main (String args[]) { Scanner br = new Scanner(System.in); System.out.println("Enter a word");
[Code] ....
On executing the program, StringOutOfBoundsIndex error occurs.
I do have a quick question about string manipulation. You see I've been given a simple exercise that involves asking the user to input a number between 1,000 and 999,999 and displaying the result. Simple enough, but the caveat is that if the user keys in the comma, say 24,000 instead of 24000 for example, the program is not to display the comma. I don't see how to do this without an 'if' statement. The book says the 'if' is not necessary but does offer this hint: "Read the input as a string. Measure the length of the string. Suppose it contains n characters. Then extract the substrings consisting of the first n-4 characters and the last three characters."
What good is n-4 going to do if the string's lengths varies?
Here's what I have written thus far:
import java.util.Scanner; public class P13 { public static void main(String[] args) { Scanner in = new Scanner(System.in); System.out.print("Please enter a number between 1,000 and 999,999: ");
I'm attempting a small program as I'm teaching myself the ropes. In it, I need to compare one string (the base) to another which is just the base string that's had it's characters shuffled.
Java Code:
String base = "ABCDEFG" String shuffled = "CDAFBEG" mh_sh_highlight_all('java');
What I need to do is run a loop that shuffles the base string each time, but compares and saves any characters that match in the correct location. For example, if shuffled = "CDAFBEG", then the G would be "locked" in place and the rest of the characters shuffled and looped back to the comparison.
I have all the code I need for shuffling the string, but I'm not sure how I would go about comparing each character and then also locking it in place. I get the basics, I think, of needed to use several variables.
consider this statement from a jsp file(there are many more statements like this in jsp file..) Statement -
<h:dataGrid something styleclass="styleclass1" something1 onClick="event" something2 <% this is a scriplet tag %> something3 style="style1">
<h:output text>hello i am text</h:output text> </h:dataGrid>
What I want is to extract(and store it somewhere) the part from "<" to ">" where:
< - is the one in "<h:dataGrid" > - is the one in "style1>" and not the('>') one that appears in the end of "</h:dataGrid>" or "<h:output text>" or "</h:output text>"
Problem is the text b/w && is in multi-line...&& there are scriplet tags in between them.. so i don't know how to extract this particular string.. i tried using using some regular expressions but couldn't find the exact one..
(this was just an example && instead of this "" tag it can be anything like again in this line :
<h:output text>hello i am text</h:output text>
I want to extract the string from "<" till ">" where :
< - is the one in starting of "<h:output text>" > - is the one in ending of "<h:output text>" and not the one in "</h:output text>"
However the difference b/w this example and the above mentioned one is that this one is not multi-line and doesn't contains any scriptlet tags)....
