I am trying to convert the double 4270571936.0000000000d to a hex string using Double.toHexString() and the answer I'm getting is 0x1.fd17834p31, what does p stands for?
The answer I'm expecting to get is 0x41efd17834000000 so not sure why it won't give me the correct answer?
The following floating point Double to hex calculator shows the write answer right Floating Point to Hex Converter
I'm having some trouble with a code I am writing for class. I had an 2 errors like this before this one and fixed it by changing int avgRe, avgMiles =0; to double. Now I am getting this error and am stuck on what I need to change. Here is the code:
import java.io.*;
import java.util.*;
import java.text.*;
public class Reimbursement_3_09 {
static Toolkit tools = new Toolkit();
public static void main (String [] args) throws Exception {
[Code] ....
This is my error:
[code=Java]
Reimbursement_3_09.java:33: error: incompatible types: possible lossy conversion from double to int
summary (outFile, totalAmount, ctrMiles, ctrMilesgt0, avgRe, avgMiles);
^
Some messages have been simplified; recompile with -Xdiags:verbose to get full output 1 error
I 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 ?
I am working with a java program that uses binary and sequential search. i have those two methods working. In the program i also need to return the price of parallel arrays. This is my code so far:inventory class:
//FileName: InventoryData.java
//Prog: Brock Paston
//Purp: To load and search through arrays with binary and sequnetial search.
package stu.paston.program6;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Scanner;
[code]....
I want to conver String value into Integer, and I have this :
String timeInterval = tfInputTinter.getText();
Integer tint=(Integer.parseInt(timeInterval))*1000;
but when I put this second line, the conversion, the program stops to work. I tried also with Integer.valueOf(timeInterval) but again I had the same problem.
I am getting byte stream as below. These looks like UTF 8 bytes
3C524F4F543E3C535452494E473E54455354204F4E4C5920535452494E473C2F535452494E473E3C2F524F4F543E
I want java code which will convert above bytes to string as shown below
<ROOT><STRING>TEST ONLY STRING</STRING></ROOT>
How I can convert a string into a character array without using toCharArray???
View Replies View RelatedA group of my classmates and I were discussing strings. We were asked, "What circumstances would you want to convert a text string to numerical data?" but we couldn't think of any answers outside of counting characters within the string for various applications.
View Replies View Relatedhow to convert string to blob or clob data type in java coding?
View Replies View RelatedI am working on a small brain teaser project where I am taking a string input from a Scanner, and turning into ascii. The problem comes into play when the string has a space in it, so if the question is what's your name? and you say Michael Jackson, Michael gets converted then Jackson becomes the answer to the next question, rather then the second portion of the current string.
This is an older version of what I'm doing currently, but it had the same basic problem with spaces.I will say I did my current version entirely different.
nner user_input = new Scanner (System.in);
//Creates a string
String favoriteFlick;
System.out.println("Enter the title of your favorite film?");
favoriteFlick = user_input.next();
[Code] .....
I am working on a simple online chat program. I have build the server services and generally everything works smoothly.Now for the input area i use a JEditorPane as like the output message area. The reason of choosing JEditorPane is because i want to apply some CSS on future...
Now under the input message area there are two JButtons. One for attachments and other one for emoticons. Now i am trying to make a Popup Menu with all my Emoticons Images when someone click the JButton(emoticons). I was thinking about a JList inside a popupMenu but that kind of thing is mostly impossible i guess. Any way to automaticaly convert String to images for example when someone type in inputJEditor something like this :) or this :( to convert it to emoticon image ...
I have a date in the following String format "2013-03-28,19:37:52.00+00:00" and post processing I am converting this to following String as per prevailing logic "2013-03-28,19:37:52.00+0000" (This is existing code and no changes have been Made here for last few years) And the using this SDFormat i.e new SimpleDateFormat("yyyy-MM-dd,HH:mm:ss.Sz") for conversion to Date Object
We are suddenly getting this exception now can't figured out what has changed ?
java.text.ParseException: Unparseable date: "2013-03-28,19:37:52.00+0000"
at java.text.DateFormat.parse(DateFormat.java:357)
//Students Full Name
firstName = JOptionPane.showInputDialog("Enter student " +
"first name.");
lastName = JOptionPane.showInputDialog("Enter student " +
"last name.");
// Get test grade (numbers)
[b]test1 = JOptionPane.showInputDialog("Enter test1 grade")[/b];
The line in bold is where that error comes up. I know it something simple but I can't remember. I declared both firstName and lastName as Strings and then the test1 I declared as double. I had a similar error in a previous assignment where I had a integer(age) input and then i had an output statement asking for a name all I needed to do was put keyboard.nextLine(); after my age input and I was fine.
I am making a program where the user types in how many students, the student name and the student result. My problem is typing in a dobule name for instance: Tom Tom.
I have tried both:
String name = input.Next(); -> Only works with one name.
and
String name = input.nextLine(); -> Skips right trough and ask me to type result again.
Here is my code:
Java Code:
import java.util.Scanner;
public class c5e8 {
public static void main(String[]args){
Scanner input = new Scanner (System.in);
int highestResult = 0;
String highestName = " ";
[Code] ....
I'm having an issue with figuring out how to structure and call a method using a string prompt. My prof has given us specific methods to create, and the one I'm having issues with is blic static double getOperand(String prompt). What I have currently is this:
public static double getOperand(String operand1, String operand2){
Scanner input = new Scanner(System.in);
System.out.println("What is the first operand?");
operand1 = input.toString();
System.out.println("What is the second operand?");
operand2 = input.toString();
return operand1, operand2;
}
which is obviously not working. When I asked my prof he sent me this, "The String paramater in the getOperand() method is intended to have the prompt value that is passed to it. Within the method, the prompt is then displayed, what the prompt is asking for is input, and then returned to the method call.For example, if the method is public double getOperand(String prompt) within the method you would display the prompt, as in System. out. println(prompt), use the Scanner class to create an object, perhaps called input, and then use the input object to get the value asked for by the prompt. Once you have that value, which in this example would be a double, then return the value to the method that called it.
The call could be something like this: double value = getOperand("What is the first operand?");". But that only works a little. Clearly I'm missing something and no matter what I google, or how many times I read the chapter, I am just not getting this. Everything else up to this point has been easy. and I can create regular methods just fine, the menu method works, but I can't figure out this string method and all the rest build off this method.
I am supposed to write a program on PuTTY using UNIX (I have Windows 8), but I am not comfortable with it yet, so I am using Java through NetBeans (IDE 7.4).
The program has to follow these instructions (ignore the Linux part of the instructions, the rest is in bold):
Write a program on the Linux system using the putty utility. The program should get strings of data from the command line (that is, look for the data in the "args" array of strings). Use a loop to convert each of the strings in the array into a double and add the number to a total. Print the total after all of the strings have been processed.
The program will use try-catch to catch any error that occurs. If an error occurs, the program will print a message saying that the error occurred. The program can end at that point.
You should create the Java program using the nano editor. The input data should be a list of numbers on the line that runs the program.
The problem so far is that I keep getting an error when converting a String value into a new double value. I have yet to code the try-catch method in my program
Java Code:
import java.util.*;
public class Program13Strings {
public static void main(String[] args) {
Scanner scan = new Scanner (System.in);
System.out.println("How many lines of data do you wish to enter?");
int size = scan.nextInt();
[Code] ....
*NOTE: right where my code says double newDouble = Double.valueOf(newResponse); is where the error is occurring.
*ERROR: Exception in thread "main" java.lang.NumberFormatException: For input string: "abc"
at sun.misc.FloatingDecimal.readJavaFormatString(Floa tingDecimal.java:1241)
at java.lang.Double.valueOf(Double.java:504)
at program13strings.Program13Strings.main(Program13St rings.java:21)
Java Result: 1
How can this be fixed so I don't get this error?
This may be a multipart question. Basically I have to write a program that accepts a string, converts it to a double splits it and then performs a calculation.
public static void main(String[] args) {
String input = ""; // initalize the string
boolean isOn = true; // used for the while loop...when false, the program will exit.
String exitCommand = "Exit"; // exit command
String[] token = input.split(("(?<=[-+*/])|(?=[-+*/])"));
[Code] ....
This is the error I get:
Enter a math problemException in thread "main" java.lang.NumberFormatException: empty String
at sun.misc.FloatingDecimal.readJavaFormatString(Floa tingDecimal.java:1842)
at sun.misc.FloatingDecimal.parseDouble(FloatingDecim al.java:110)
at java.lang.Double.parseDouble(Double.java:538)
at Calculator.main(Calculator.java:22)
[Code] .....
How do I go about actually fixing it. Without that line commented out I get this:
Enter a math problem
2+2 <-What I entered
[Ljava.lang.String;@135fbaa4
Also, how would I go about using the submethods to check for valid operands and operators (also part of the problem) I have the actual lists made obviously, but am unsure how to get those to work with the problem.
I am really struggling to make the Split String method work with another method which is double hours.
HtmlElement span = new HtmlElement(SPAN_OPEN, SPAN_CLOSE);
span.setValue("Drive Time: ");
td.addNestedElement(span);
HtmlElement span2 = new HtmlElement(SPAN_OPEN, SPAN_CLOSE);
span2.addAttribute("class", "drive_time");
String time=String.valueOf(showSet.getTransferHours());
/*Split the Strings into Hours and Minutes*/
[code]...
I have a double primitive and gave it a huge value. I am curious if valueOf could ever potentially cause data loss. I tried a simple test and it seems it never loses any data:
Java Code:
public class DoubleStringTest {
public static void main(String[] args) {
double val = 1029.129348558634;
System.out.println(val);
System.out.println(String.valueOf(val));
}
} mh_sh_highlight_all('java');
Does this always hold true?
import java.lang.Math;
import static java.lang.Math.random;
import java.util.Scanner;
public class LineofCoordinates
{
public static void main( String[] args, String x, String random, String exit, String y, String y2, String x2)
[Code] ....
I am working with java project which is kind of charting room..but the problem is when am writing the query for listing the message in the conversation the error prevail in my eclipse...string literal is not properly closed by double quote...this is my java file
<%
String uname=session.getAttribute("username").toString();
String pword=session.getAttribute("password").toString();
java.util.Date dat=new Date();
int x=1;
try{
[code]....
string literal is not properly closed by a double quote
View Replies View RelatedI am working on a project that just calculates simple interest based upon a principal and a percent interest rate written as .xxxx from user.
I need the Loan amount and the final interest calculation to show up as a currency with commas in appropriate areas, the Rate to be expressed as X.xxx% instead of .xxxx
I keep getting this error when I compile:
C:JavaInterestCalculator.java:46: error: incompatible types: String cannot be converted to double
principal = formatter.format(principal);
^
C:JavaInterestCalculator.java:49: error: incompatible types: String cannot be converted to double
rate = formatter.format(rate);
^
C:JavaInterestCalculator.java:52: error: incompatible types: String cannot be converted to double
totalInterest = formatter.format(totalInterest);
^
3 errors
Tool completed with exit code 1
And here is my code
import java.util.Scanner;
import java.text.NumberFormat;
import java.text.DecimalFormat;
// class declaration
public class InterestCalculator
{
// main method declaration
[Code] .....
how to replace all the command that is found on a string between 2 double quotes? for example I have a text file that contains data like as following
A,"-16,12","-178,245","-15,506"
B,"-16,12","-178,245","-15,506"
C,0, 0,1
I need an output like this:
A,"-16.12","-178.245","-15.506"
B,"-16.12","-178.245","-15.506"
C,0, 0,1
I did this but without regular expression. It seems to me that a regular expression it's more elegant than to parse every line and replace it.
I am trying to make a program that calculates the change due in dollars and cents. The user inputs both the amount due and the amount tendered. My program only works with whole numbers?
View Replies View RelatedI am writing a code in which a user inputs data as a string and that data must be verified as a valid number. A valid number is anything from 0-100. Then all valid numbers are converted into double numbers.
I am having trouble in how to write the validation part of the code.
Is it suppose to be an if, else statement? And if so how is it suppose to be validated?