i am working on a love project and i have to print different different text messages on the basis of different different values .
i only try to know which method i used for this...
like on jsp page
i get a value 42 then onclick <next page>print a text message about the 42
I am working on a project and i want to print some text message when i get a numeric value.
Like....if the output value is 10 then Click <Next Button> go to next page and print "This is a number which comes before 11".
for this which method will use and how can i implement it in my project.
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");
[Code] .....
I am trying to read numeric values from a text file into an array. This is what i have so far but when i compile it, it doesn't run and give me a result.
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Scanner;
public class question2_17110538 {
[Code] ....
I can't catch the text message from a exception because ex.getMessage() is null.
Code is
try {
.......
} catch (Exception ex) {
System.out.println("Error "+ex.getMessage());
Logger.getLogger(Soap.class.getName()).log(Level.SEVERE, null, ex);
statD.errMessage = ex.getMessage();
statD.succes = false;
return statD;
}
And the program writes at the console:
Error null
Also on the console screen I can see the following message:
Apr 10, 2014 3:00:38 PM SoapUtils.Soap setPostVarsSEVERE: nulljava.lang.NullPointerException at SoapUtils.Soap.setPostVars(Soap.java:830)
Line 830 of Soap.java is inside the try {}.
Why is the ex.getMesage() null?
I need to insert a break line to a text message on hitting enter by taking its ascii value i.e 10.I have used node.insert commands.I have tried using node.insertAttribute and node.insertChars but is not working ....
View Replies View RelatedI have to write a program that reads data from a file and prints only certain things. The file contains author names and book title names separated by "@" as the delimiter. We need to return only the books written by a certain author.
Here is an example of the text file (database.txt)
Doe@Jane@The West Wind
Smith@John@11 days and nights
Smith@Ken@Java Programming
Johnson@Jim@Web Development
Doe@Jane@The last day
Tolstoy@Leo@Data Structures
Wilson@Helen@Math Theory .....
This is the code I have so far:
import java.io.*;
import java.util.*;
public class Driver {
public static void main(String[] args) {
new Driver(args[0]);
} public Driver(String f) {
[Code] ....
I have everything written to record the names and titles of the authors and books, however I am unsure as to how to print ONLY the books written by Jane Doe. Could I possibly put it into a for loop with an if statement saying "if(firstName == "Jane" && lastName == "Doe")" then System.out.print the book title?
I am having an issue with using FileWriter to print some text to a text file. In the following code, I am supposed to be able to print the initial attributes and the user changed inputs into a file but all I am getting is the memory locations of the objects I created in one long line.
package project3final;
import java.io.*;
import java.util.*;
public class Project3Final {
static class Instrument {
char [] stringNames = {'E', 'A', 'D', 'G', 'B', 'E'};
private final String instrumentName;
[Code] ....
I am using JSTL library in my jsp. Previously, I was directly printing the text in JSP without using JSTL and it was printing fine.
My text is : Server Down, can't perform operation.
I was getting this error message from my backend code and was able to print this successfully. However, after using JSTL, doing like this:
pageContext.setAttribute("error", someObject.getError());
<c:out value="${error}" />
Here, c refers to <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
This is now printing the encoded form of the apostrophe char : Server Down, can't perform operation.
If you print (eg a JTable) from Java/Swing and choose "Adobe PDF" as the printer, you get an Acrobat file. But the PDF isn't searchable because the text has already been rendered by Java before Adobe PDF gets to see it. Is there a way to make printing use a more high-level interface to the printer driver so that the text is left intact?
View Replies View RelatedThe problem is the result of encoded message can't not restore to the original message by the decoder. Here are my three class's code
SecureMsgMain:
package securemsg.core;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Scanner;
import securemsg.database.*;
public class SecureMsgMain {
[Code] .....
I feel like the program is written correctly; however, the interactions pane in DoctorJava gives me numbers instead of letters. I am happy that the numbers it gives me is consistent, but it still bothers me and I do not know what to debug.
import java.util.Scanner;
public class Monogram {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
String firstName, middleName, lastName;
int nameLength=1;
[code]...
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");
}
I am trying to sort a JTable on an all numeric (integer) column. From what I read, if the sorter knows the type is integer it should sort correctly. This is my code:
public class ActorTableModel extends DefaultTableModel {
private static final long serialVersionUID = 1005352603826663105L;
public ActorTableModel (Object data[][],Object columnNames[]) {
super(data,columnNames);
}
public Class<?> getColumnClass (int column) {
if (column==0) {
return(Integer.class);
}
return(String.class);
}
}
The result is when I sort on that column (0), it sorts alphabetically not numerically.
I am trying to write out a program that takes numerical input from the user and converts it to a date using the English month name. I am experimenting with the method of a "switch" statement without using the "break" clause. However, I seem to be missing something, as Eclipse is telling me I have a syntax error with my block. My curly braces seem properly placed. Also, I made sure to follow guidelines to make my code fit on the screen and remain easy to read.
import acm.program.*;
public class MethodsThatReturnNonNumericValues extends ConsoleProgram {
public void run() {
int month=readInt("Enter month number");
int day=readInt("Enter day");
int year=readInt("Enter year");
[Code] ....
At first I wanted to just use an array and set each day a value, however I was told that it has to be stored as a string.
Design and implement the class Day that implements the day of the week in a program. The class Day should store the day, such as Sun for Sunday. The program should be able to perform the following operations on an object of type Day:
A. Set the day.
B. Print the day.
C. Return the day.
D. Return the next day.
E. Return the previous day.
F. Calculate and return the day by adding certain days to the current day. For example, if the current day is Monday and we add four days, the day to be returned is Friday. Similarly, if today is Tuesday and we add 13 days, the day to be returned is Monday.
G. Add the appropriate constructors.
H. Write the definitions of the methods to implement the operations for the class Day, as defined in A through G.
I. Write a program to test various operations on the class Day.
import java.util.*;
public class Day {
static Scanner readinput = new Scanner(System.in);
String day;
public Day(String day) {
[Code] ....
So right now if I run my code it allows me to type in a day, then it gives me the next and previous day, the last part is to add X days to it. Ideally I would like to be able to take the day entered, depending on the day set a numeric value, then add prompt for number of days you want to add. The program should then use modal (%7 ) to add value to the value that was given based on the day, and then translate it back into a String value (the day).
I have been working on this letter to numeric grade convertor and my return function is not returning anything. Here is my code:
import java.util.Scanner;
public class GradeTest
{
private double numericValue = 0;
private static String grade = "";
public static void main(String[] args)
[code]....
So I have to convert strings to double numbers and there can be no exception.
The strings that aren't numbers or do not fit into a set criteria have to be discarded.
When I try to write this I get an exception when a non-numeric is entered and the code stops.
What can I do? Also, am I finding the average of the array correctly?
import java.util.*;
public class Grades{
public static void main(String args[]){
int arraycount = 0;
final int SIZE = 10;
int validArraycount = 0;
final int ValidArraySize = 10;
[Code] ......
I have a problem about this numeric or value error on my java class. Whenever I am calling for the procedure in callable statement it says that error. I don't know what is the problem with my sql code because I;ve tried running it on database alone and it runs perfectly. The results that I need came out fine. But when I'm already calling it in java that error appears. But I tried on finding the line that the said error is coming from and here is the code...
create or replace
PROCEDURE RENTING
(P_NNAME IN VARCHAR2,
P_ADD IN VARCHAR2,
P_PHONE IN NUMBER,
[Code] ...
In the test program, you will need to convert the Strings for quantity and price to numeric types. To do this, you could use the Integer.parseInt() method and the Double.parseDouble() methods. I'm not sure what he means by that. I attempted it in my program but I get these errors
Exception in thread "main" java.lang.Error: Unresolved compilation problems:
number cannot be resolved to a variable
description cannot be resolved to a variable
quantity cannot be resolved to a variable
price cannot be resolved to a variable
Duplicate local variable quantity
Duplicate local variable price
Syntax error on token "myInvoice", delete this token
The method getinvoiceAmount() is undefined for the type String
at InvoiceTest.main(InvoiceTest.java:7)
Code:
public class Invoice
{
private String number; //Instance variables
private String description;//Instance variables
private int quantity;//Instance variables
private double price;//Instance variables
[Code] .....
This is the code that I wrote but I have two problem with two buttons one of them ... I want to delete the selected text inside the text Area which represented as b[8] and the other button that I want to select parts of the texts which represented as b[0]....
Here is the code..
package KOSAR2;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
[Code] .....
I have a string value returned from a background tool that will range from 0 to possibly terabytes as a full number. I want to format that number to use commas and to reduce the character count using an appropriate size modifier (KiB, MiB, GiB, etc). I've tried converting the string number to a Double value using Double.parseDouble() and then performing the math based on the size of the value with this code:
Double dblConversionSize;
String stCinvertedSize;
dblConversionSize = Double.parseDouble(theValue);
if (dblConversionSize > (1024 * 1024 * 1024))
stConvertedSize = String.format("%,.000d", dblConversionSize / 1024 / 1024 / 1024) + " TiB";
...
I've also tried using
String.valueOf(dblConversionSize / 1024 / 1024 / 1024) + " TiB";
However, the formatting is failing and I'm either getting a format exception or the result is displayed as a number with no decimal component.
I am checking how to do following task.
01. pickup the selected text file and read the line by line and output the text in to visual text pane.
what i did:.
01. I wrote code that read the text file and output in to jave console/ also some of the interface.
the code read txt file:
Java Code:
String fileName = "C:/Users/lakshan/Desktop/lawyer.txt";
File textFile = new File(fileName);
Scanner in = new Scanner (textFile);
while(in.hasNextLine()){
[code]....
so it will read any text file dynamically and output to the text pane in interface. I think scanner code must be execute after the select the file from the browser and set the scanned result in to variable. then later out put the var as string in some jswing component?
import java.awt.*;
import javax.swing.*;
public class InstantMessageFrame extends JFrame
{
private JList friends;
private JTextField message;
private JButton send;
[code]...
1. Open the source code file of your InstantMessageFrame class from Lab 12.2.
2. Add the following three fields to the InstantMessageFrame class: a JTextField named message, a JList named friends, and a JButton named send.
3. Add a method to your InstantMessageFrame class named getMessagePanel()that returns a JPanel and has no parameters. (This method will create a JPanel that will appear in the south border of your JFrame. It will contain a text field in which a message can be entered and a button that sends an instant message to all the friends in the list.)
4. Within getMessagePanel(), instantiate a new JPanel and give it BorderLayout.Assign a message equal to a new JTextField by using the no-argument constructor of JTextField. Assign send to a new JButton,passing in "Send" to the constructor. (This will be the label on the button.)
5. Within getMessagePanel(), add the message text field to the center of the JPanel and add the send button to the east border of the JPanel. The panel is now ready, so return the JPanel reference.
6. Add a method to your InstantMessageFrame class named get-FriendsPane() that returns a JScrollPane and has no parameters.(This method will create a scrollable list that will contain the names of others that you can chat with.)
7. Within getFriendsPane(), assign friends to a new JList by using theno-argument constructor of JList.
8. Within getFriendsPane(), instantiate a new JScrollPane using the following statement: JScrollPane pane = new JScrollPane(friends);
9. The scroll pane is ready, so return the reference pane at the end of getFriendsPane().
10. Within the constructor of InstantMessageFrame, invoke getMessagePanel(),placing the returned panel in the south border of the content pane of InstantMessageFrame.An Introduction to GUI Programming 399
11. Within the constructor of InstantMessageFrame, invoke get-FriendsPane(), placing the returned scroll pane in the center of the content pane of InstantMessageFrame.
12. Save, compile, and run the InstantMessageFrame class.Your InstantMessageFrame now has three visible components: a JList,a JTextField, and a JButton.
I'm very new to java code I'm currently learning about loops I've tried to write this for a statement in the program I'm making but its not working. I keep getting this message
LoanQualifier.java:26: error: illegal start of expression
if (salary >0||<=250000)
^
LoanQualifier.java:28: error: illegal start of type
if (yearsOnJob >0||<50)
I'm using Jgrasp for a complier
if i send messages as in the code below, is there a way to read only one message, if the client doesn't know how long it is (or if he only knows the maximum length)?in the documentation it says, that the method read(byte[]) reads until no data ist available or end of file is decteted. What does the latter mean? Can i extend the array that i sent by a byte that signals the end? Here is my Code:
Server
public class Server implements Runnable{
ServerSocket server;
HashMap<Short,Socket> clients;
public Server(){
clients = new HashMap<>();
[code]....
Both are startet in seperate threads. At the moment the first output of the client is "12 bytes read", and then continously "-1 bytes read"(because the server closes).