how would a program code look like, input ten words and output them backwards in a msdos environment. My code this far is:
package baktext;
import java.util.*;
import java.io.*;
import java.awt.*;
//public static String baklänges(String s) {
//}
public class Baktext {
[Code] ....
I have a project requiring me to build a program having a user input 3 words, sort them alphabetically and output the middle word. I have done some searching and seem to only come back with results for sorting 2 words. I so far have code to get the user input but I am completely lost as to how to sort them alphabetically.
import java.util.Scanner; //The Scanner is in the java.util package.
public class MiddleString {
public static void main(String [] args){
Scanner input = new Scanner(System.in); //Create a Scanner object.
String str1, str2, str3;
System.out.println("Please enter three word words : "); //Prompt user to enter the three words
[Code]...
we havnt done arrays yet and I THINK i have to do compareTo.....how to use it?
Well my code is supposed to ask for an input file and then (ex: input.txt), read the input file and create an output.txt file with the anagram for the words in the file. Also it should be displayed on the screen. However my code doesn't display the anagram on screen or the output file!
Heres is the code:
import java.io.*;
import java.lang.*;
import java.util.*;
/* This program will read a file given by the user, read the words within the file and determine anagrams of the given words. If the file that the user inputs is empty, then the program will output "The input file is empty."
* The program will read the file line by line, counting the total number of words read. If there are more than 50 words, "There are more than 50 words."
* will be printed, and the program will terminate. After each line is read, the words in the line will be separated,punctuation characters will be removed, and upper case characters will be switched to lower case.
* If any word is larger than 12 characters, that word will not be considered in the total amount of words in the file and it will not be sorted.
* After each word is read, the letters will be sorted and stored into an array containing each
* word's 'signature'. After all the words have been read, words will be printed to the output file on the same line based upon their signature.
*/
public class Anagram {
//Creating constants for maximum words in file and maximum chars in word
public static final int MAX_CHARS = 12;
public static final int MAX_WORDS = 50;
[Code] ....
I tried the following code, OK:
Java Code:
String temp = "hi this sf hello is new what is this";
String[] cmd = temp.split("s");
int num = cmd.length;
System.out.println("number of words are: "+num); mh_sh_highlight_all('java');
However, when i get the input from user , i didnt get the expected result:
Java Code:
System.out.println("Enter the input string to count the words: ");
String[] cmd = new Scanner(System.in).next().trim().split("s");
int num = cmd.length;
System.out.println("number of words are: "+num); mh_sh_highlight_all('java');
Now Result for above code:
Enter the string to count the words:
hi this is new
words are: 1
I am trying to write a program that will generate a QR Code from an input text and also display some information about the input/output bits. So far I have created the frame and what to do next. And I'm not sure if I am on the right track since my level of programming is not that great. By the way, I am using zxing libraries from GitHub. I know, there are plenty of generators online for the QR Code, but that is not what I am looking for. As you can see on the attached image, I am more interested in the efficiency of encoding 2D data. Also, I noticed that almost all the online projects regarding 2D codes are for Android. Which is not very useful.
// QR Code Generator
package qrcode;
import javax.swing.JFrame;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.EtchedBorder;
import javax.swing.border.TitledBorder;
[Code]....
I am currently taking a computer science class in high school, and its my first time programming (2 weeks since i started). I have currently finished my program however there were a few details that bothered me. I was supposed to create a program which can calculate average of individual marks and then calculate all of the average marks previously entered by user. However I noticed something that bothered me, which was the fact that if i were to enter a number when asked to enter a name, it would assume that number is a name. Also when I asked for the 5 marks the program would run fine until an error occurs if i accidentally type in a letter or word. I have done some research and found system scanners however i still don't understand the concept in a looping situation. Here is what I have so far.
import java.io.*;
public class loopingEx6Final {
public static void main(String args[]) throws IOException{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
double average, totalaverage = 0;
int Mark, Marktotal=0, marktotalsum=0, count=0;
[Code] .....
Program is to find the most frequently used words across all the input files, where each word must appear at least once in each file.
View Replies View RelatedThis is a program to input a sentence and print the words that start with a vowel.......There is no syntax error but on executing and typing the sentence and pressing enter,I get a error saying :
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
at java.lang.String.charAt(String.java:658)
at sentence.main(sentence.java:22)
[Code] ....
I am working on a class project where I have to give the program a predefined String, have it output the first char, then the second char, then the String backwards, and then the String as it originally was. The problem is that it's not out putting all of the information that I need it to. Here's my code:
Here is the class that prints the first char, second char, etc.:
public class Word {
private String word;
public Word() {
}
public Word(String s) {
setString(word);
[code]....
Here's the main class:
public class WordRunner {
public static void main(String[] args) {
Word run = new Word();
run.setString("Hello");
[Code] ....
The output is supposed to look like this:
H
o
olleH
Hello
But this is what I get:
olleH
Write a menu driven program that either accepts words and their meanings, or displays the list of words in lexicographical order (i.e. as in a dictionary). When an entry is to be added to the dictionary you must first enter the word as one string, and then enter the meaning as separate string. Another requirement - from time to time words become obsolete. When this happens, such word must be removed from the dictionary.
Use the JOptionPane class to enter the information.
Use the concept of linked list to carryout this exercise. You will need at minimum the following classes:
- A WordMeaning class that hold the name of a word and its meaning.
- A WordMeaningNode class that creates the node of information and its link field.
- A WordList class that creates and maintain a linked list of words and their meanings.
- A Dictionary class that test your classes.
For the output, the program should produce two scrollable lists:
- The current list of words and their meanings.
- The list of the deleted words. You need not list the meanings, just the words.
So far, I have everything coded except for the remove method, and I am not sure how to code that. I coded the add method already, but now I don't know where to begin with the remove method in my WordList class. My classes are below.
WordMeaning Class:
public class WordMeaning {
String name;
String definition;
WordMeaning(String t, String d) {
name = t;
definition = d;
[Code] .....
I am trying to create a timer.
Timer timer = new Timer(1000, new TimerActionListener());// does this mean the speed?
int count = 180;
I would like the timer to start to be set to 1 minute and the timer to go backwards so 60,59,58,57 etc..
How would I display certain output text if the text entered equaled "text".
So lets say you enter a question into a JTextField. You press a button that submits the text. The output displayed depends on what the question you asked was.
Think about it as "If question = What color is the sky? On submit, display text "Blue". How to implement this.
What are formatted input & output in Java? I want to know the difference between general "input & output" & "formatted input & output"? And what is the reason of the naming it as formatted.
View Replies View RelatedI have to create a program that uses the Scanner in String input and Output that will enable the user to convert
double -> int
int -> byte
int -> short
int -> hex-string
The output should look something like this:
Syntax: convert <value> <type>
convert 15.5 int~> 16
convert 128 byte~> -128
<type>: int, byte, short, hex, decimal
Syntax: max <type>
max byte~> 127
<type>: int, byte, short
[Code] ....
Here is my code so far. I am trying to get the WHILE LOOP to work so the user inputs a number, the if statement prints the output and then it returns to ask for another number and goes again and again looping :
import java.util.Scanner;
public class ifwhileloop {
static Scanner sc = new Scanner(System.in);
public static void main(String[] args) {
double nmbr;
[Code] ....
I want to do basic input/output using Process class. I basically wish that, I should ask user his name and when user provides his name then I would print "Hello '[name]'"
import java.io.*;
public class ReadAndPrintName
{
static Process p;
[Code]....
I am trying to create a program for my class that requires the input of a letter and the output of whether or not it is a vowel or a consonant. I am using eclipse, it is giving me no errors, but when entering the letter i get an error in the console
import java.util.Scanner;
public class w0571505_a2a {
private static Scanner a;
public static void main(String[] args) {
// enter letter
System.out.println("Enter a Lowercase Letter");
[Code] .....
This is what i have...
I am trying to write a program in Java that uses threads.Below is the program requirements:The goal of this assignment is to create a routine which creates multiple threads, has them do work in parallel, and terminates when the last thread has finished.
The Scenario: There are several groups of people in a bar watching the Olympics cheering for their country. Each group will cheer for their country some given number of times, with a random pause (between 2 and 5 seconds) between each cheer. There is enough room at the bar for up to ten different groups to sit (each would be cheering for a different country).
The Program: The task is to write a program that will simulate these cheers using threads. The program should be called cheer.X (X being the language of choice). You may use any language that supports threading. When the program is run it should ask for the number of countries and then the name and how many times it will be cheered for. The main function will then create a thread for each team and each thread is responsible for cheering the specified number of times for the correct team at the random interval. You will submit the proper source code file for me to open and compile myself, not an executable.
An example run would look something like this: How many countries are supported at the bar? 3 Enter the first: China How many cheers? 2 Enter the second: USA How many cheers? 4 Enter the third: Russia
My input class
package core;
import java.util.ArrayList;
import org.lwjgl.input.Keyboard;
public class Input{
public static final int num_key = 78;
private static ArrayList<Integer> currrentkeys = new ArrayList<Integer>();
private static ArrayList<Integer> downkeys= new ArrayList<Integer>();
private static ArrayList<Integer> upkeys = new ArrayList<Integer>();
[Code] ....
The program should has the output depending the number I'll input. (The number should be from 1-9) . This is the program's output should be:
Input number: 4
Output:
# # # 1 # # # # #
# # # 2 # # # # #
# # # 3 # # # # #
1 2 3 4 5 6 7 8 9
# # # 5 # # # # #
# # # 6 # # # # #
# # # 7 # # # # #
# # # 8 # # # # #
# # # 9 # # # # #
(Example 2):
Input numbers: 8
Output:
# # # # # # # 1 #
# # # # # # # 2 #
# # # # # # # 3 #
# # # # # # # 4 #
# # # # # # # 5 #
# # # # # # # 6 #
# # # # # # # 7 #
1 2 3 4 5 6 7 8 9
# # # # # # # 9 #
(Example 3):
Input number: 5
Output:
# # # # 1 # # # #
# # # # 2 # # # #
# # # # 3 # # # #
# # # # 4 # # # #
1 2 3 4 5 6 7 8 9
# # # # 6 # # # #
# # # # 7 # # # #
# # # # 8 # # # #
# # # # 9 # # # #
I'm not asking the code to make this program, I have trouble to understand the algorithm to make this program ...
I am trying to learn how to use file input/output in addition to exception handling... The problem is my textbook wrote this chapter for a version of Java that hasn't come out yet, so everything I do "according to the textbook" doesn't work. any feedback on correcting these exception errors because I am not sure what is causing them or how to fix them.
I was able to have it display the name of the book in the Book.txt file, but when I added the second part if the file doesn't exist, that's when the errors came up and it wouldn't compile.
import java.io.*;
import java.util.*;
public class DisplayBook
{
public static void main(String[] args) {
try {
File book = new File("Book.txt");
FileInputStream in = new FileInputStream(book);
[Code]...
These are the compilation error messages I am receiving: (I have managed to get it down from 7 errors to just 4, but now I'm stuck)
DisplayBook.java:15: error: unreported exception IOException; must be caught or declared to be thrown
while ((letter = in.read()) != -1) //if file exists, displays book title
^
DisplayBook.java:24: error: unreported exception FileNotFoundException; must be caught or declared to be thrown
[Code] ....
4 errors
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 {
[Code] .....
I am stuck on one of the projects: Area Calculator
I am able to code an area calc that works, but am unsure how to move all the input/output to main like the project wants. here is a piece of my code so far:
public static void main( String[] args )
{
Scanner kb = new Scanner(System.in);
int base = 0, height = 0, width = 0, radius = 0, choice;
System.out.println( "-=-=-=-=-=-=-=-=-=-=-" );
System.out.println( "1. Triangle" );
System.out.println( "2. Rectangle" );
System.out.println( "3. Square" );
System.out.println( "4. Circle" );
System.out.print( "Pick a shape: " );
[Code] ....
I have the same thing for rectangle, square, and circle (of course with the correct formulas) and the program works perfect, but the assignment is still wrong until I can move the input/output to main. what do I do?
I've done a lot of hardwork for this assignment but I don't know what's why the second textfield which is for output is blank.
All I want is to get the input from user in textfield a and display it in textfield b in lower case.
public void KeyPressed (KeyEvent ke) {
String letter2="";
if(ke.getKeyCode()==KeyEvent.VK_A)
{
letter2=letter2+"a";
btextfield.setText(letter2);
[Code] .....
Using JOptionPane,ask for 10 numbers from the user.Use an array to store the values of these 10 numbers.Output on the screen the number with the greatest value.
View Replies View RelatedI had to make a program that allows the user to enter 3 sides and it should output "invalid" if it does not make a triangle and if it does make a triangle it calculates the area of the triangle and it doesnt seem to do anything but say "invalid" as the out put.
import java.util.Scanner;
public class MyTriangle {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
boolean valid = true;
double side1, side2, side3, area, A;
[Code] ....