Encode / Decode A Jar File In Java
Feb 13, 2014how to decode a .jar file to view its methods and later encode it. i wanted to write the program in java instead of using winzip
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String Encode / Decode Method
Apr 4, 2014I was asked to write program in Java, that should code and encode some String in following way:
i) coding : "rrryyyyyaaaa" -> "r3y5a4"
ii) encoding: "r3y5a4" -> "rrryyyyyaaaa"
The code works fine, but I forgot the name of this coding method.
Caesar Cipher - Encode / Decode Message With Given Key
Nov 1, 2014I have been assigned to make a program that encodes and decodes a given message with the given key (spaced numbers, for example: 3 1 7 4 2 5). I'll post the code for all the classes that I am using below.
QueueInterface:
import java.util.*;
public interface QueueInterface<T>
{
T dequeue() throws QueueUnderflowException;
boolean isEmpty();
[Code] ....
Ok, so the classes to focus on are these:
CircularLinkedUnbndQueue
CircularLinkedQueueITD
Encoder
Decoder
EncodeDecodeConsole
EncodeDecodeITD
Because those are the ones I had to write myself, the others were given to us to use. As far as these classes go, they work fine without causing any errors from the input I give. For example if I enter a message and a key, it correctly encodes and decodes the message with the given key. What I'd like for you fine programmers to do is give feedback on those 6 classes. Like, suggestions on how to make them better or more efficient, neater, changing any of the methods to make them more efficient or prevent any errors beforehand, etc.
Using String Tokenizer And Buffer To Decode A Message?
Apr 15, 2014So I have this file in which has a few sentences on a single line. What I need to be able to do is read the file and then take each word and create a token out of it. Then what it does is it selects the first letter of every 5th word, uppercase it, and then allow me to use append it via a stringbuffer object to create a word out of it.
I know I'll need to use a string tokenizer but I'm not sure how to do so in a way that makes each word separate and how to tell it to only hit the 1st letter of every 5th word.
Here's what I've come up with so far, but I'm currently at a loss at what to do and my textbook/documentation is just not working.
Java Code:
String line; // The line we read from the file.
char letter; // The first letter of each 5th word.
String sw; // The completed string.
public static void main (String [] args)throws IOException {
[Code] ....
Decoder Ring - Prompt User For A Message To Decode
Nov 7, 2014So it is the question: This program implements a simple "decoder ring". It will prompt the user for a message to decode and decode the message based on the following substitution rules:
ABCDEFGHIJKLMNOPQRSTUVWXYZ will map to
ZEBRASCDFGHIJKLMNOPQTUVWXY
abcdefghijklmnopqrstuvwxyz will also map to
ZEBRASCDFGHIJKLMNOPQTUVWXY
any other characters (like space, punctuation, will map to themselves)
so if it sees an 'A' (or an 'a'), it will map to 'Z', etc... All i could think of is this but can't figure out the rest.
import java.util.Scanner;
public class DecoderRing
{
public static void main(String[] args)
{
String1[] = 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z';
String2[] = 'Z','E','B','R','A','S','C','D','F','G','H','I','J','K','L','M','N','O','P','Q','T','U','V','W','X','Y';
}
}
Not sure, what things are necessary such as switch statements or if and else or for loops and such...
Encode Getmessage Calls In The Code?
Apr 21, 2015Im trying to HTML/JavaScript ecode the getmessage calls in the code listed below. The code below is a snippit from a program which is used to handle a failed authentication attempt.
if(logger.isDebugEnabled())
logger.debug("Authentication Failure: " + exception.getMessage());
response.sendError(HttpServletResponse.SC_FORBIDDEN, "Authentication Failed: " + exception.getMessage());
Calling Encode Method To Driver Class
Oct 30, 2014I have a driver and a main program. How would I go along with calling the encode method to the driver class that I made so I can have the user inputs affected by the encode method?
Java Code:
public class ShiftEncoderDecoder
{
private int shift;
public ShiftEncoderDecoder(int shift)
{
setShift(shift);
}
public int getShift()
[Code] ....
Encode URL String - It Will Accept Only 1 String Argument
Mar 30, 2015I've a problem in encoding a URL string.
I know to encode a string we use,
URLEncoder.encode(stringname,"UTF-8");
But when I use this I'm getting an error telling that the encode method will accept only 1 String argument.
How To Load XML File Inside Of Java Class File In Netbeans Project
Feb 26, 2015try {
File configFile= new File("C: Documents and SettingsstudentMy DocumentsNetBeansProjectsCDASsrcconfig.xml ");
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document doc = dBuilder.parse(fXmlFile);
doc.getDocumentElement().normalize();
NodeList nList = doc.getElementsByTagName("config");
[Code] .....
This code is working properly but i have use path like this
File configFile= new File("srcconfig.xml");
Instead of system directory path i have to use path inside of project but i am getting an error-cannot find the specified file...
Servlets :: How To Upload File To Dropbox With Only File Name (without Path) Using Java
Dec 1, 2014In my web application i want to upload file to drop-box. I am getting file name from browser.Is it possible to upload file to drop-box with only file name.
Below the drop-box upload code with java.
File inputFile = new File("New Text Document.txt");
System.out.println("inputFile.getAbsoluteFile(): " + inputFile);
FileInputStream inputStream = new FileInputStream(inputFile);
try {
DbxEntry.File uploadedFile = client.uploadFile("/magnum-opus.txt",
DbxWriteMode.add(), inputFile.length(), inputStream);
System.out.println("Uploaded: " + uploadedFile.toString());
} finally {
inputStream.close();
}
In the above code the place New Text Document.txt we have to provide total path of file.
Embed HTML File Into Applet Java File
Jan 18, 2014I want to know can we put the data of html file example
<html>
<body><applet code="classname" width="100" height="100">
</applet>
</body>
</html>
into my Applet's java file it can be done i have read it somewhere and have also implemented it ..... but now unable to memorize it
Viewing Java File As TXT File
Jan 25, 2015I have a java assignment concerning formatting. I know I have no syntax errors but that doesn't mean that my formatting is correct and I can't figure out how to create a .txt file and view my code in notepad just to verify the formatting.
public class Assignment1b {
public static void main (String[] args) {
String[] header = {"Wilson", "Office", "Supply", "Inventory", "Listing"};
String[] columnhead = {"Number", "Description", "Price", "Qty", "Net Price"};
String[] line1 = {"AB35", "Swingline Stapler", "19.95", "125", "2493.75"};
String[] line2 = {"CP05", "Canon Copier", "329.65", "175", "57,688.75"};
[Code] ....
How To Use Function In Jar File In Another Java File
Jul 3, 2014I need to use a some function which is already there in a jar file in another java.
for example,
Consider a jar file created from a java file in which only one constructor is there say SHA (String message).
I need to use this SHA method in another java file.
How to import the jar file to the existing java file? import .....
Java Application With Several Classes All In Same Java File
Apr 9, 2015I've written a java application with several classes all in the same .java file. It works just fine. Now, I've broken it up so that each class has its own .java file. Still works fine. My next step is to put those classes into a package, but I'm not about to get the program to run.The .java source files are all in /home/user/src
I've set the CLASSPATH to /home/user/src..All of the source files have "package com.myfirm.program" on the first line.I compiled the application with:
javac -d . File1.java File2.java File3.java (etc...)
the compiler created the directory: /home/user/src/com/myfirm/program and put all of the .class files in there.So how do I get the program to run? if I run from /home/usr/src
java File1
I get: Exception in thread "main" java.lang.NoClassDefFoundError: File1 (wrong name: com/myfirm/program/Program)
How To Call Java Methods From Different Java File
Apr 14, 2015I create 2 files:
CircleCalculationMethod.javaMain.java
In Main.java, How can i call method in CircleCalculationMethod.java ?
Should I put everything in same folder ??Should i do something like "import CircleCalculationMethod.java"Should i do something like create a package ...
I use Eclipse software
How To Split XML File In Java
Oct 7, 2014How to split an XML file in java? what function and package should we use?
View Replies View RelatedJava File Along With Properties?
May 25, 2015Need to know how i can store a value in File which is in Properties?
Here I am placing my Properties code :
ReportHTML C:/bea/user_projects/domains/OICDomain/applications/IIMS/IIMS/target/source/REPORT_HTML_DUMP/
ReportEXCEL C:/bea/user_projects/domains/OICDomain/applications/IIMS/IIMS/target/source/REPORT_EXCEL_DUMP/
My Java File :
File destHtmlFolder = new File("C:/bea/user_projects/domains/OICDomain/DOC_SERVER/REPORT_HTML_DUMP");
File srcExcelFolder = new File("C:/bea/user_projects/domains/OICDomain/applications/IIMS/IIMS/target/source/REPORT_EXCEL_DUMP");
Print To File With Java
May 30, 2014In my project i need to use printer concepts to print a file but the output should be printed to another output file instead of printer,
View Replies View RelatedEXE File Of Java Application
Jan 18, 2015Is there a way to make a exe file, with all dependencies included so it is possible to run the application on any computers without installing any other programs?
View Replies View RelatedWAV File Using Java Eclipse
Mar 26, 2014I am trying to .wav file using java eclipse ..
[B]import java.io.* ;
import sun.audio.*;
public class AudioDemo{
public static void main(String[] args)
throws Exception
[Code] ....
And I am getting the following errors ...
Exception in thread "main" java.io.FileNotFoundException: E:pppp.wma (The system cannot find the file specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at java.io.FileInputStream.<init>(Unknown Source)
at AudioDemo.main(AudioDemo.java:10)
Parse Java File
Feb 7, 2014I want to parse a java file (i.e., I need write some code which understand the content of a given java file--> the name of this java file will be entered as input). Then, after my code understand the content of the given java file, map this java file into another target language or platform. the output from my code is the new file which can run on the target language or platform.in the current state, I want to write some code which can understand a java file and can parse its content and display it on the console.
View Replies View RelatedWhere Is Jar File In Java Project
May 27, 2014As a brand new with Java I've created a small "Hello world" program using eclipse.
I would like to create an exe file from this application. Therefore, I need the jar file.
I can't find such a file with that extension in the folder where I saved the java project.
How can I manage this file?
I know it is a very basic issue, but as I mentioned it is the first "Hello world" test...
Creating XML File In Java
Jul 30, 2014I'm getting a DOMException, "HIERARCHY_REQUEST_ERR". I know that the problem is from the following code towards the bottom in my function, but I don't know how to deal with it. When I get rid of doc.appendChild(staff);, I get rid of the problem, but it obviously doesn't add the new entry to my root element.
Element staff = doc.createElement("Staff");
doc.appendChild(staff);
import java.io.File;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
[Code] .....
Java AES File Encryption
May 10, 2015I have a program that encrypts and decrypts using the AES algorithm, but I have to specify the name of the encrypted file, and also specify the format of the original file as part of the name of the encrypted file. I will like to know how how to implement the following features into my code : 1.)I want the name of the encrypted file to be in cipherText 2.) i want the computer to be able to decide the file type(extension eg.txt) without me having to specify it, for example in my code if I am encrypting a .jpg file, I have to specify the name of the encrypted file as encrypt.jpg
Here is my code which i have tried to implement:
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.CipherOutputStream;
[Code] ....
To see if I could get the file name to be in cipher text but I got these errors:
Exception in thread "main" java.lang.NullPointerException
at java.lang.String.<init>(Unknown Source)
at EncryptDecrypt.encrypt(EncryptDecrypt.java:48)
at EncryptDecrypt.main(EncryptDecrypt.java:37)
Run Java File In Background
Feb 6, 2015I have made a little chat program with java(ecplise) but i want build it and if a user opens it is is going to run in the backgroundprocess. I don't know if i have to edit my code or Export it differently.
View Replies View RelatedClass Name And File Name In Java
Dec 3, 2014why should the class name and the file name should be the same in Java.Is it because it makes it easier to organize and maintain your code?
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