Writing Float Array To File

Apr 20, 2014

I am trying to write a Float Array to a file but it is only writing the last line of the array to a file. I have also attached the entire assignment as a zip file with all required files. Here is the part of the code I am having issues with:

Java Code:

for (int i = 0; i < differenceArray.length; i++){
System.out.println ("Date: "+ dateArray[i] + " Opening: " + dataArray[i][2] + " Closing: "+ dataArray[i][5] + " Difference: " + differenceArray[i]);
try(FileWriter writer = new FileWriter("C: emp" + fileName + ".txt")){
writer.write(Float.toString(differenceArray[i]));

[Code] .....

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Read Float Numbers From A File / Put Them In Array And Sort

Jun 30, 2014

I'm supposed to write a program, which reads float numbers from a file, puts them in an array and sorts the array. After that I'm suppose to add the numbers so that when I add the 1 and 2 number of the array, I'm suppose to save the sum on the position of number 1, then I add number 3 and 4 and save the sum on position 2 etc. Also if my array has an uneven number of floats it's suppose to add the last 3 and not 2 numbers in the last iteration. The problem is the method throws an ArrayOutOfBounds Exception but I can't seem to find my mistake.

That's the second method. The first one just stores the sum in another variable and then returns it. Also is there a way in that I can Scanner/File/array etc. and initialize the array only once so I don't write the same code two times like it is now.

package sumOfFloats;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Arrays;
import java.util.Scanner;
public class SumOfFloats {
public static float sumFloats() throws FileNotFoundException{

[Code[ ....

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Java Code:

import java.util.Arrays;
import java.util.Scanner;
import java.io.File;
import java.io.PrintWriter;
import java.io.FileNotFoundException;
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I have a program I am trying to get together for class. Its a simple calendar, and I'm trying to save an array of dates to a file to be able to recall at will. I have done a fair amount of research but couldn't find a solid method to what I'm trying to do. I have a method that will check the inputted date's file to retrieve or save an entry. Here is where I'm stuck.

baseFile = new File("C:\Users\Ian\Documents\Eclipse (Java)");
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[Code] ....

This is pretty much the most reasonable method I could find. this is called as a sort of plug for two other methods to call. Everything compiles, no errors or warnings, but no files are being created.

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I have pasted the log and below is the code.

DEBUG - 7053CFEF4819D884638A42F088B507C3:/EntryPoint_1000 : session id:IVREPMSUAT2-2015083130037-4 |
Comm_DBinteraction-trcITELOutput | V_COUNTERTYPE:: | v_counterType : 1,2,3,4,5,6,7,8,9,10
DEBUG - 7053CFEF4819D884638A42F088B507C3:/EntryPoint_1000 : session id:IVREPMSUAT2-2015083130037-4 | Consult_IVR_3000:Comm_DBinteraction-trcITELOutput | V_SPENDINGLIMIT:: | v_spendingLimit :,500.0,59.5,0.0,1101.0,581.5,393.0,0.0,0.0,0.0

[code]....

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Mar 25, 2014

Doing an early exercise out of the Java Examples in a Nutshell book and they are asking for 'an efficient search algorithm to find the desired position' of two floats in a sorted array that bound an int. My try is below:

public static int search(int searchnum, float[] nums){
int low = 0;
int high = nums.length - 1;
int mid = (low + high) / 2;
while(low < high){
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[Code] ....

This is working for the example but I would like to know if it is considered 'efficient' or even good?

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Here is my code

package org.kishor.outputStream;
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import java.io.IOException;
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public static void main(String args[]) throws IOException
{
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[code]...

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There is an ATM class, which has the main in it. From here the program is supposed to work like an atm, you type in your account number and can withdraw or deposit. It is supposed to then write the changes to the file.

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[Code] .....

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My code so far is this:

Java Code:

package sorting;

import java.lang.*;
import java.util.*;
public class sorteh {
public static void main(String [] args){
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[code]...

I copied what a website did for the sorting part, but if I have low=0 and high=19, wouldn't mid not be an int?

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private void submitButtonActionPerformed(java.awt.event.ActionEvent evt) {
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try
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  BufferedWriter bw = new BufferedWriter(writer);

[code].....

I would need the file output to be in the following format:

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As I said, using the .write(bw) i know how to make it look like:

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or

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[code]....

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[Code] ....

I can see the last two lines are telling the program to overwrite the first input with the second. Of course if I pick a different file name for the second output, I get another file with the second input, but I need to learn how to append as well.

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How can i fix this code so that the FileOutputStream writes the String "Output" to the file HighScore.

public boolean ScoreWriter(int HighScore, int ScoreNum){
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[code].....

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[Code] .....

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[Code] .....

When I double-click on the resulting file, all the images show up as black rectangles in Windows Photo Viewer. Yet the associated buffered image displays correctly in the window. I've tried 'jpg, 'png', and 'bmp' extensions, with matching formats in the write. I am using Win-7 64-bit. and jdk8 with matching jre.

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[Code] .....

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[Code] ....

Attached image(s)

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Java Code:

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[Code] ......

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