Tagged Questions

0
votes
5answers
29 views

How to create generic primitive arrays?

This is a following question coming from Two methods for creating generic arrays. With given two methods, @SuppressWarnings("unchecked") static <T> T[] array1(final Class<T> elementType, ...
0
votes
2answers
53 views

Combining array indexes

I have created two arrays. One to store names and one to store sales. I am trying to link the indexes of each together so that index 1 from then name array will bring up the value of index 1 of the ...
-4
votes
3answers
55 views

Accessing array at index 0 returnes correctly, but accessing at index 1+ generates error? [closed]

Here is the code: System.out.println("[Server] Handshake Recieved"); String fdata = new String(p.getData()); String[] data = fdata.split(";"); System.out.println(fdata); ...
4
votes
4answers
58 views

How can I treat an underlying byte array as an array of shorts? Or ints? Or longs?

I am an embedded engineer, working in Java. I need to communicate with devices, and frequently I need to massage buffers into the form needed by or produced by some hardware. I have spent ...
-1
votes
3answers
50 views

Java program using arrays, finding max int? [closed]

The Game class contains a main method that: (10 points) Checks to see if any names have been specified on the command line. If no names are specified, the method prints the message “No names ...
-2
votes
3answers
42 views

Exception in thread “main” java.lang.ArrayIndexOutOfBoundsException: 100

I am building a project in java (with Netbeans) which is about classes. So i have this import javax.swing.*; public class TestHumanResourcesTEI { public static void main(String[] args) { final ...
-6
votes
3answers
63 views

Java array, append object items to array [closed]

If anyone could help me with the following I would be very appreciative. The Rack class represents the set of tiles that belong to a player. The Rack class must: (2 points) Include a private ...
0
votes
0answers
21 views

Assistance with Circular Extended Array Deque

I'm trying to implement a Deque utilizing a circular array that extends when the array gets full. However, I am getting an IndexOutOfBoundsException. I think my issue is with the insertLast method. ...
-1
votes
3answers
59 views

How can I see if part of a word is contained in an array? [closed]

For instance, let's say I have the following array of app names: {"Math Workshop", "Math Place", "Mathematics", "Angry Birds"} I want to scan this array for any elements that contains the word ...
0
votes
2answers
34 views

Array initalization using reflection

Someone please help to understand how can we initialize array in java using reflection. for a simple object we can do like this : Class l_dto_class = Class.forName(p_fld.getType().getName()); Object ...
-2
votes
3answers
104 views

Why values are not the same?

I have the following piece of code: public int[][][] arrMethod1(){ for (int idx=0;idx< x;idx++ ){ arr[idx]=arrMethod2(); System.out.println("arr "+idx+" is ...
0
votes
1answer
60 views

Find count of duplicate elements and create arrays of them

i have a list of elements in array like [121,122,121,122,123,121,122] output should be arrays of all the duplicate elements like [121,121,121] [122,122,122] [123] I am limited to use Java 1.4. ...
4
votes
3answers
83 views

Two methods for creating generic arrays

I've learned following two methods for creating generic arrays. One is @SuppressWarnings("unchecked") static <T> T[] array1(final Class<T> elementType, final int size) { return ...
1
vote
1answer
23 views

JFreeChart Bar Chart Production

I'm trying to create a bar chart that generates a dataset from within a for loop. String scores = scoreText.getText(); String[] data = scores.split(","); DefaultCategoryDataset barChartDataset = ...
-1
votes
2answers
43 views

Find TOP 10 words from text: 95%-working code [closed]

I start learn Java few month ago. For my homework I write this code - to find TOP 10 words from text file. For me it very interesting task. And hard. The third day I can't finish this software - I ...
0
votes
1answer
40 views

How can I get an element type class from an array type class?

Can I get Class<T> from Class<T[]>? public static <T> void doSometing(final Class<T[]> arrayType) { final Class<T> elementType; // = @@? } Or, can I get ...
0
votes
1answer
65 views

Array of objects within array of objects

I'm fairly new to Java and I'm having a bit of trouble completing an assignment. We are asked to create a program that takes information from companies (we are supposed to create at least three). ...
1
vote
1answer
63 views

JDK's Arrays vs. Guava's ImmutableList

Is there advanteges between using one-line list creation with com.google.common.collect.ImmutableList.of(...) and java.util.Arrays.asList(...) ?
1
vote
0answers
63 views

Print to file produces unwanted text

I have something like this: private void myPrinter(int[] arr) throws IOException{ FileWriter outFile = new FileWriter("myFile.txt",true); PrintWriter out = new PrintWriter(outFile); ...
0
votes
4answers
69 views

Index out of bounds exception error

I have the following code which appears to generate an array error on the following bit: int run = 0; while(myNet.RunNet(q) > 0.2 && run < 1000) { ...
1
vote
1answer
27 views

Formatting an array element

Here's the scenario. User enters 3 types of inputs: 1/1/2013 12:00:00 AM_5/31/2013 12:00:00 AM 1/1/2013 12:00:00 AM_ _5/31/2013 12:00:00 AM The input is for date range query. 1st input: Split by ...
0
votes
5answers
40 views

Parsing an Extra String to Check For Data

I have an extra which will be passed to my service as an extra and I need to check to see if it contains specific data but I'm not sure exactly how this is accomplished so I could use a hand in ...
1
vote
1answer
22 views

Simple ViewPager - Single Layout

I'm trying to do a simple ViewPager from an array of images. My array is: <string-array name="ot_images"> <item>"file:///android_res/drawable/ot_100.jpg"</item> ...
-1
votes
3answers
53 views

Index out of bounds in for statement [closed]

I am getting an error during runtime: "index array out of bounds", i cannot find where though. The program is suppose to take 25 random numbers, separate them into even and odd numbers and display the ...
0
votes
2answers
63 views

Comparing arrays in java?

import java.io.File; import java.util.Scanner; public class scoresedit { public static void main(String[] args) throws Exception{ System.out.println("Reads in a file at the beginning of a loop, ...
1
vote
0answers
21 views

Android Bluetooth Java, Constant bluetooth stream to fill up array and write to sdcard

I am writing an Android app that uses bluetooth to stream data (bytes) into an array in another class. The idea behind this is to record a set amount of data (i.e. buffer[60000]) and when it is full, ...
0
votes
6answers
78 views

Printing numbers in array

Im trying to write a function to display all combinations in a jagged array, where each combination contains one element from each sub-array. The jagged array can consist of any number of arrays and ...
0
votes
5answers
92 views

Instantiating different class in constructor in Java

I am very new to Java have just started working on simple example programs. How can I create class A's instance inside class B's constructor. For example, I want to create an array of objects of ...
0
votes
2answers
77 views

still having error for NullPointerException [duplicate]

i tried to tweak here and here but still come out error. the error is when i want to do something with the element inside the array either want to display it, store element or searching using index. ...
-1
votes
1answer
67 views

Algorithm for matching hospitals with students based on their preferences? [closed]

I have this problem in which given a set of hospital preferences and a set of student preferences, the software should return a list of matches satisfying the following conditions: If a hospital and ...

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