Serializing And Deserializing Array

Feb 10, 2014

I need to serialize an array, I have a class Account I believe the serialize part is working I created a file

("testArray.data");
 
But when I read the file and try to dump it in an array I got this null
 
Before serialization
arrays_serialize2.Account@9931f5
arrays_serialize2.Account@19ee1ac
arrays_serialize2.Account@9931f5
arrays_serialize2.Account@19ee1ac
After serialization
null
BUILD SUCCESSFUL (total time: 0 seconds)
 
public class Arrays_serialize2 {
    private static Account[] accounts;
    private static Object Accounts;
    private static Iterable<Account> arr;
    private static Object newAccount2;

[Code] ....
 
Here is the class Account

public class Account
{
   private int accountNumber; // account number
   private int pin; // PIN for authentication
   private double availableBalance; // funds available for withdrawal
   private double totalBalance; // funds available + pending deposits
 
[Code] ....

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Serializing And Deserializing Multiple Object In Java

Dec 10, 2014

My application needs to accept multiple input at different time and i need to serialize it whenever it gets the new input and after that i need to Deserialize the object one by one.how it can be implemented. Eachtime i am able to deserialize only one object that came at last. How to implement this functionality..

This is the code for serializing.

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Scanner;
public class Dummyserial implements Serializable {

[Code] ....

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Java Code:
import java.io.EOFException;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.sql.*;
public class TestSerializer

[Code] .....

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I using the Timers in this case to change something after a countdown, but only once, then the Timers are stopped. I set the Timer tick interval to the time I want it to wait. Should I be using smaller tick intervals, and just waiting for the tenth (or so) tick, or is my way fine?

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I have to be able to read files that have been serialized in VB. 2 things, 1 they are serialized in Binary, and I tried to look up on how to serialize/deserialize in Binary, but didn't have much support...

Also in the VB code they talk about "TYPES" which seems to be to just be a class full of stuff...

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I have this arraylist off a custom object that looks like this witch also contains a list off custom objects

package holders;
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private String name;

[code]....

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Nov 8, 2014

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public static void displayArray(int[] array)

This is what I have done
 
public class RandomIntegers {
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[Code] .....

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Mar 24, 2015

I am taking the Class Algorithms and Datastructures and got an assignment for Lab that really throws me off. The goal is to create an Array out of a given CSV file, implement several Methods that get the size of array, etc.

I am still stuck in the first part where the CSV has to be imported into the Array. My problem is that I need a mechanism that figures out the needed size for the Array, creates the array, and only then transfers the data from the CSV.

The list consists of the following wifi related values:

MAC-Adress, SSID, Timestamp, Signalstrength.

These are on the list, separated by comma. The Columns are each of these, and the rows are the four types of values making up the information on a certain wifi network.

The catch is, we are not allowed to use any of the following:

java.util.ArrayList
java.util.Arrays
and any class out of java.util.Collection.

So far I used the BufferedReader to read in the file and tried to implement the array, but I get an arrayindexoutofboundsexception.

Below is my Code (Its still an active construction zone):

public class WhatsThere {
public WhatsThere(String wifiscan) throws IOException {
}
public static void main(String[] args) throws IOException {
// WhatsThere Liste = new WhatsThere(String wifiscan);
String[][] arrayListe = new String[0][0];

[Code] ....

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Feb 13, 2014

i am working on the same project and i got the code to make them print going down but not sideways.

public class ArrayofHope
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public static void main(String args[])
{
System.out.println("Decimal Character
");
for(int j = 65; j <= 90; j++)
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System.out.print(j);
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Aug 3, 2014

I am working on a problem where i have to create a 2d array with given input of the dimensions (odd number) of array, along with a number within the array and to then print out all of the numbers surrounding that number.

Anyway, i am working on simply making the spiral, which should look like the one below.

n = 3

7 8 9
6 1 2
5 4 3

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import java.io.*;
public class Spiral
{
public static void main(String args[])throws IOException
{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
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[Code] .....

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Nov 15, 2014

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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

How to write this program.. I have tried all my best but the results are not coming like this..

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This is the incorrect line: ar[r] = maze[r].clone();

My code:

private String[][] maze = {{"*","*","*"," ","*","*","*","*","*","*"},
{"*"," ", "*"," "," "," ","*"," ","*","*"},
{"*"," ","*","*","*"," ","*"," ","*","*"},
{"*"," "," "," "," "," "," "," "," ","*"},
{"*","*","*","*","*"," ","*","*","*","*"},
{"*","*","*","*","*"," ","*","*","*","*"}};
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private <T> T[][] copyMaze(T[][] ar){
for (int r = 0; r < ar.length; r++){
ar[r] = maze[r].clone();
}
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Since ar[r] is an array and .clone() also returns an array why is this line incorrect.

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Write a method that returns a new array by eliminating the duplicate values in the array using the following method header: public static int[] eliminateDuplicates(int[] list). The thing is that I found the working solution that is written below, but how it works. How to eliminateDuplicates method done with flag and flag2.

Here is the code:

Java Code:

import java.util.Scanner;
public class Exercise06_15 {
public static void main(String[] args) {
java.util.Scanner input = new java.util.Scanner(System.in);
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[code]....

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I included only the relevant functions of the code:

public boolean goNorth(char[][] array) {
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x = getX();
//x = this.x;
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//y = this.y;
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Feb 7, 2015

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array initializer method

Java Code:

public static float[] inputAllScores(float validScore) {
float[] diverScores = new float[7];
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[Code] .....

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In addition; I have all the operations written that I need except for one final one. And that is clear(). clear() is meant to empty the array, essentially it is a popAll() method. Then all I need to do is set up so I can print out the arrays and I should be able to handle everything else.

StackInterface:

/**
An interface for the ADT stack.
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public interface StackInterface<T>
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[Code] ....

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Feb 16, 2015

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byte[] noteValues = new byte[]

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I've tried amending the manual input to fit in with the Random array, as follows:

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In this case, however, the Byte array can't interpret the int values. Also, if the Byte array is outside the 'for' loop, array[randomIndex] cannot be resolved.

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public class Forest
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private int h;
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private double p = 0.7;
private int[][] f;
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Feb 13, 2014

I have double checked this code over and over and I just can't find the problem.

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Ultimately, I should convert the array of integers to an array of characters, then print it out. The file contains a set of ASCII values.

After printing it out, I should then create methods to manipulate the image produced.

Using 2D arrays is a requirement for this exercise.

I think that somehow I'm overcomplicating this and the solution is a lot more simple than I think, but I can't think of what to change.

The error I am getting is:

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 40
at main.main(main.java:17)

Java Code:

import java.util.*;
import java.io.*;
public class main {
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[Code] .....

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I have an array of Strings, one on each line and I need to convert them into an array of char's.

For Example:

This
is
an
Example
of
what
my
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In order to accomplish that I did the following-

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But whenever I try this and then try to print the output :

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Feb 20, 2014

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public static void main(String[] args) {
ggT(5);
}
 
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Jan 22, 2015

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So the "large" and the "title" arrays must be dynamically sizes... or be copied to a larger sized..

1 can it be done with arrays?
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Jan 15, 2014

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2nd question: i get an error when i try to print the newInt Array for no apparent reason.

Java Code:

public class viereinsdiezweite {
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[code]....

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