I have been trying to get audio stream of mp3 as array of floating points. I have got the array with the below sample code. I am not sure whether I ... |
public static void decodeThis(BufferedImage im){
int w = im.getWidth();
int h=im.getHeight();
int[] arr=im.getRGB(0, 0, w, h, null, 0, w);
...
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My question is if i have an array....
int[] one; and another array. int[] two;
So i want to add both the array into a single array... in easyest way ... |
I want to sum and average of 2D array by column and if the value of e[i][j] more then 0 , count and sum it. But I don't know the ... |
I have a class which maintains a list of features of the class. These features change infrequently compared to the reads. The reads are almost always iterations through the ... |
Say I have an array of integers,
int[] array = new int[7];
for(int i = 0; i < 7; i++)
{
array[i] = i;
}
Now i want to get only the first four numbers in ... |
I tried to debug it but I have no clue what code I'm loosing. Mind checking up for me? I want to add Item Names, price and quantity into ITEM[] ... |
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Create an array class for Employee which will reserved 7 elements. The class will have 2 data fields, a constructor and a get method for each field. The employee constructor requires ... |
I'm using Processing to divide a large image into a series of smaller, rectangular nodes.
Processing stores the color value for the pixels of a PImage in a pixels ... |
See Having Some Issues With Making Pacman to understand this question fully. Just look at the first part of the accepted answer. And this is in java!
I am using the ... |
I have a class arrayFun with the variable
int[] _array;
I have a method setArray:
public void setArray(int [] array)
...
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So I need to make a program that will store user and computer input into arrays, but when I print the results it only shows the last values inputted. I can't ... |
I'm having trouble setting up and placing values into an array using a text file containing the floating point numbers 2.1 and 4.3 each number is separated by a space - ... |
here's my confusing code..well, it worked once or twice..i think before i changed something.. That's an easy one: undo those changes and restart from there. btw. have a close look at ... |
P: 55 falconsx23 Hi, I need help with my java program. I am new with java, so go easy on me if this is a dumb question. Ok the question is ... |
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Your 'usedSize' variable is a local variable, i.e. your other methods know nothing about it; you should pass it to those functions as well (as an another parameter) so those functions ... |
They are easy to spot. They start with a "J" and end with ... .... ... ... o ... ... s ... |
Like create a variable for the first in.nextInt() in the != -999 while loop? Funky things have happened when I've tried that. |
Well you are just printing them one after the other. You need to allow the user to type something to the prompt and to read what has been typed using the ... |
P: 54 yeshello54 I Have a question regarding arrays and filling a 4x4 grid..here is my function. **this is the grid that is created.... //////////////////////////////////////////////////////////// //color grid colorPanel= new JPanel(); colorPanel.setLayout(new ... |
@yeshello54 I didn't read all your code; it is way too much, but that error message tells me (and should tell you) that an array of length 6 was used and ... |
Hello Not sure whom to ask this question - but thought will ask anyway. I have friends who are members of a blog site. Users read the blogs and post their ... |
I need to find the no. of duplicates in this array. There is something wong in the loop, can anyone please look at it and point me towards right direction. Thanks ... |
P: 1 randy18h Output: Enter a Value: //x6 Menu 1. Search 2. Locate for an index Choice: //if chosen 1: sample// Enter a value to search: 6 6 //else if not ... |
Use a debugger or insert println() statements to check what is going on: the length of the cell arrays, and the cell values being compared. Basically you want to check that ... |
I'm trying to create a program that prompts the user to put in several different numbers. I'd like to put those numbers into an array for easy use. To save me ... |
Can we see how you're storing your arrays? eg are you actually creating an array of length 5, and storing the zeroes? If you only create an array of the size ... |
1. Figure out what fields of the download you want to store. 2. Organize the fields. 3. Open a FileWriter object 4. For each 'download' write out it's details to the ... |
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P: 1 larryzboy //~--- JDK imports ------------------------------------------------------------ import java.text.*; import java.io.Console; import java.util.regex.*; import java.util.Arrays; public class A3P2 { public static void main(String[] args) { final int MAX = 25; String ... |
if (scores[i] <= 70) should be >= Yes, define cleanly. You probably want to add spaces between Pass/Fail and the grade. This is also problematic: (int)(Math.random() * 5); It's not a ... |
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And, it all works perfectly. I created labels and added the buttons/labels in a (intArray.length, 2) grid and life is good. Thanks again Dheeraj. |
i want to create a 10x10 matrix(with user input) for e.g., i have given a small sample of 2x2 matrix and below is the description regarding what manipulation i want to ... |
import java.util.Scanner; public class labNumEight{ public static void main(String[] args){ int[] teresaArray = new int[4]; Scanner input = new Scanner(System.in); System.out.print("Enter a number: "); teresaArray[i] = input.nextInt(); teresaArray[i] = numberEight.get_Array(int[]); } ... |
I have a very odd problem... the code below sends the same bytes over and over... the function FileInputStream.read(bytes[]) will not overwrite what's already in array, unless I call array = new byte[CHUNK_SIZE] in the while loop which is very ugly for memory, and if the file is large enough will destroy the system... any ideas? public void uploadFile(final String path, ... |
Hey, I am trying to create a morse code translator. I am reading the Key from a txt file, storing it in an array, and then tranlating from there. My problem is: When the program runs, it stores the first line in the array, then seems to stop running. No exception is thrown. I usually just kill the run and try ... |
Hi Sorry for such a basic question, not sure if I should have asked in the beginner forum, but I'll try my luck here. I've been researching this all afternoon, and stil can't figure out. I need to use fileinputstream to read a file into an array, actually I just need a substring of each line. Once in the array I ... |
Hi, I would like to know how to output the contents of the objectinputstream into an object[] array? The input for the objectoutputstream is an object that outputs to a file called temp.txt. I would like to know how to read the stream and write to an object array as the object itself would contain either a list of strings/doubles/integers. Any ... |
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A jagged or rugged array is when you have a non uniform array. A 2 X 2 array will look like this 00 00 A rugged or jagged array might look like this. 00000 00 0000000 0000 00 0 This is achieved when defining the array. You mention that this is an array with 6 elements of depth but you add ... |
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Hi there I was wondering if anyone could give me a clue as to what I am doing wrong with this code, I think I may be declaring the Random method in the wrong place? I am trying to apply one of R,G,B from colourArray at random to one of the points in the array myBigArray... The compiler returns: '.class' expected. ... |
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yeah, its okay now. i in the set method i just use fname = sValue ( i change try to fname) and in the get method i just return fname. my problem right now is when i use this bean and set the value in jsp myBean.setFname("a","b"); it display an error message wrong number of arguments. why is this so? in ... |
hi, my problem is with the user entry .so i have in my entry screen for user to enter contact information & i have 5 contact informations for the user to enter ,so instead of having 15 first name setters & getters properties , i want to find some easiest solution to make the form bean not to have too many ... |
Hi, all, When a method need return an object list as result, I notice that two implementations exist in JDK. Some take java.util.Enumeration as return type (java.sql.DriverManager.getDrivers), and some take arrays (java.awt.Container.getComponents) instead. Of cource, other choices also there, for example, java.util.Iterator, etc. But, here, my question is on Enumeration and array: I wonder whether there's any resonable consideration when determining ... |
public void update(){ spotStatusWithCurrent = spotStatus; for(int x=0; x |
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I'm havin difficulty with this class assignment. The code is writin down below. I have to place the largest number in the highest element of the array; after the second pass the 2 highest numbers, and so on. then instead of making nine comparisions on every pass make 8 on the second and so on. Then I have to modify the ... |
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You cannot create an array of a parameterised type unless you use the unbounded wildcard (?) or you generate a compile-time warning. This applies to (for example) java.util.ArrayList - where it is impossible to implement without a compile-time warning. I pointed this out to a member of JSR-14 way back when (when I was working on the implementation and JSR-14 was ... |
he every1, can sum1please helpme here, i am really stuck. i have a quston to do and iv no idea how to even start. the question: A standard pack of cards can be represented as an array of 52 integers with each number representing a standard card. Thus: 0 1 2 3 4 5 6 7 8 9 10 11 12 ... |
Hi there, I'm attempting to take a date value from my ArrayList, I am saving this to the Array as follows row.add(5,rs.getDate("active_from")); row.add(6,rs.getDate("active_to")); Now I need to retrive the date and cast it to a Date object so I can pass it to another method. The problem is how do I cast the object which is a date in this case ... |
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59. arrays coderanch.comI'm currently involved in a project that involves inputting random numbers into an array and coparing to another array. I'm having a problem with the input part.For example I'm used to making a prompt using applet but this requires command line only and a testprogram as well(which I've never done).Any help would be appreciated thank you! |
I keep getting error with Array List. I am not able to understand what the problem is. Below is my code Can somebody please help me? package com.example.model; import java.util.*; public class BeerExpert{ public List getBrands(String color){ List brands = new ArrayList(); if(color.equals("amber")){ brands.add("Jack Amber"); } return(brands); } } I am getting the following errors Note: BeerExpert.java uses unchecked or unsafe ... |
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How to add data in a 3-d array in java. I have hard coded & stored the data as double mydetails[][][] = new double[][][]{ ( {0.1,0.2 },{0.5} }, ( {0.1,0.2 },{0.5} }, ( {0.1,0.2 },{0.5} } } Now i do not want to hard code the real data but fill in the data dynamically so how do i do that thanks ... |
Hi! This is an insertion sort program, the program is OK But my question is about out put of (j): -------------------------------------------------- A[j + 1] = a; System.out.print(j+" "); -------------------------------------------------- The out put is -1,0,0,-1,1,-1,1) Which (j) dose take these values and how dose it work??? class InsertionSortTest { public static void main(String[]args) { InsertionSorter sort=new InsertionSorter(); sort.insertionSort(); sort.print(); } } class ... |
I have problems constructing an array. Well, i haf a .ord file which contains entries like "MEASURE Waist_Full=33.19". So,im supposed to extract the string and the float out into two different arrays, meaning "MEASURE Waist Full" is in one array and "33.19" is in another array. How do i go about doing it? any help will be appreciated. thanks. This is ... |
Code Listing 1: class ts { public String toString() { return "J A V A";}} class tstest { public static void main (String args[]) { ts[] t1 = new ts[1]; t1[0] = new ts(); System.out.println(t1[0]); } } Code Listing 2: class ts { public String toSt() { return "J A V A";}} class tstest { public static void main (String args[]) ... |
I have compare 2 arrays if they have same value then nothing has to done it array A contains and array B does not the have that value then write an insert statement and if array B contains and array A does not contain then write delete statement. Can this be done in single loop or 2 loops. Can anybody help ... |
67. arrays! coderanch.comSo i have been playing about with these arrays,and they are doing my head in... I have a few problems, what i am trying to do is get the program to request an integer value loop from 2 to n-1 and determine if each of those smaller numers is a factor of n...sounds easy! but ITS NOT! here is what i ... |
Hi, Welcome to JavaRanch! Java arrays really have only one dimension. If you declare a 2-dimensional array, what you really get is an array of arrays; a 3-d array is an array of arrays of arrays. As such, there's no unique answer for the "width" because every element of the "backbone" of a two-dimensional array could legally hold a different-sized one-dimensional ... |
class Test2 { int[] i1 = {1}, i2 = {3}; void m1() { m2(i1, i2); System.out.print(i1[0] + "," + i2[0]); } void m2(int[] i1, int[] i2) { int[] i3 = i1; this.i1 = i2; this.i2 = i3; System.out.println(i1[0] + "," + i2[0]); } public static void main (String[] args) { new Test2().m1(); }} |
Hi all, FACT I.. When we use a FINAL qualifier for a variable, once the variable is initialized, u can not re-initilize it. FACT II An array of objects stores just the references to actual objects. let me explain the scenario with an example; I am having a class sheep. and following is my code: sheep obj_sheep_1; final sheep[] array_of_sheep; //FINAL ... |
Hi, I have an array chartable[][] and another one JButton[][] Now the size of array and length of each element is given for chartable. How could I initiailse JButton that it can hold all the characters in chartable as new JButton(""+chartable[i][j]); char chartable [][]={ arrays of variable lengths } JButton buttons=new JButton[chartable.length][?] Thanx in Advance, Maki Jav |
I was wondering if someone could explain to me how arrays work when you are taking information from a few different classes. Let's say we have 5 class Address, Name, School, UTA, and Texas. So UTA and Texas are children of School. I need to build two different arrays that go in class SchoolTest with two variables coming from UTA (say ... |
Hi All, I am using Stack class to calculate simple arithmetic expressions involving integers, such as 1+2*3.your program would execute operations in the order given,without regarding to the precedence of operators. Thus, the expression 1+2*3 should be calculated (1+2)*3=9,not 1+(2*3)=7. import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.util.Stack; public class Ex15_2 extends JApplet{ Stack theStack=new Stack(); JTextField theInput=new JTextField(); JTextField theOutput1=new ... |
I have the following code to shuffle an array of integers around and the algorithm itself works fine. int[] chromosome1 = new int[chromosomeLength]; int[] chromosome2 = new int[chromosomeLength]; int positionInChromosomeToUseNext; //create chromosome 1 chromosome1 = chromosomeEncodingForAlgorithms; for (int i=0; i |
According to the operator precedence chart, array index [] has higher precedence than the = operator. So the position that is going to be changed in the a array is the current position of b. So we are are going to be assigning a value to a[1]. The = operator has associativity from right to left. So the first assignment evaluated ... |
the brackets hold a list of elements you want to put into your array. Java will create the array to be the same size as the number of elements. if you want to add another string to your array, you only have to insert it into the brackets - you don't have to change the declared size of the array (which ... |
Hello, I am trying to figure out what would be the best way to create an array (or vector) that has 2 types of fields. The first field is a string and the second field is a byte array. I've looked at collections, but I'm not sure how I'd code a solution for this. I was thinking of making an object ... |
Hi, I am writing a program that needs to do a relatively large amount of tough calculations on a relatively large amount of numbers, which are doubles. While developing I can store all of these in an array just fine, because the test data sets I use are very small. However, to put the program to some real tests I need ... |
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First, Java doesn't have a "bool" type, but it does have "boolean". Second: "null" means exactly one thing in Java: it's a reference to "no object". Therefore, variables that normally refer to objects can be set to null. Variables that don't refer to objects, called primitives, can't be set to null. Primitive types include byte, char, short, int, long, float, double, ... |
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I'm actually using an applet but I thought this might be the better place to post and I was too scared to post in the beginner forum in the case this deemed either bit intermediate or advanced. I had initially written a program in Perl (which allows named arrays - hashes) but now I need to create it in an applet. ... |
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import java.io.*; import java.util.*; public class laddu { public static void main(String[]args) { int array[] = {1, 2, 3, 4, 5}, sum = 0, i=0; System.out.println ("zzzzzzzzzzzzz"+array[0]); for (i = 0;i < array.length;sum = sum+array[i++])//line 1 { System.out.println ("The average = " + sum / array.length);//line 2 System.out.println ("i= "+i); System.out.println ("sum= "+sum); System.out.println ("arr= "+array[i]); } } } here at ... |
Hey guys. I read in a csv file which contains 2 small lines. and print out the contents of the csv file String line = null; try { FileReader fr = new FileReader("c:/product/products2.csv"); BufferedReader br = new BufferedReader(fr); while( null != (line = br.readLine() ) ) { System.out.print(line +"\n"); } } catch (Exception e) { e.printStackTrace(); } System.out.print(line +"\n"); works grand, ... |
I understand that arrays in Java are a subclass of Object. I also recently found out that arrays implement both the Cloneable and the Serializable interfaces. Is there any source code for arrays? The class Object and the interfaces mentioned all have source code. Or are arrays simply an internal aspect of the compiler like primitives? I am trying to figure ... |
Hey guys, Right something here i dont quite understand i wonder can some one shed some light on it for me please. Right so i import csv file with 2 lines into app and use an array to split commas as follows; code: for (int i = 0; i < textfile.length; i++) { //textfile contains .csv file piece = textfile[i].split("[,]"); //piece ... |
Hi, This is my first post, hope this is the right forum. I have been told that arrays are objects, but I am not able to find any concrete implementation for the same. I guess there myst be some class/interface defined somewhere(in java.lang package obviously) which should have some concrete implementation and contain variables such as length etc. I have gone ... |
90. arrays coderanch.comokay I know there is some stupid mistake in here but I do not know what it is. When I run the following program all I get are nulls please tell me what I am forgeting import java.io.*; import java.lang.reflect.Array; import java.util.Scanner; public class Names { int currentManNameIndex = 0; int currentFemaleNameIndex = 0; int currentLastNameIndex = 0; public String getMensFirstName() ... |
Example: final ArrayList[] arr; arr = ... arr[0] = new ArrayList(); arr[1] = new ArrayList(); The question is, how should the "arr" variable be constructed. ===================== Intuitively: arr = new ArrayList[2]; This yields a compiler error: Cannot create a generic array of ArrayList ------------------------------ If you use this: arr = new ArrayList[2]; The error disappears, but you then get the typesafe ... |
Hello all, as part of a program I must write I have a method void takeIntersectionWith(Object other)which takes an Array object and compares it to another and finds the intersection point.For example, if one bag contains {1,1,3,3,4} and the other bag is {1,1,1,3,7} the intersection is {1,1,3}. The method can't change the other bag. I'm not really sure where to start ... |
hi jesper, i was already checking the javadoc, but to be honest i did not fully understand the documentation of the return value of binarySearch: Returns: index of the search key, if it is contained in the list; otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the list: ... |
94. Arrays coderanch.comHello, i'm having problems storing data into an array. I'm trying to store strings and doubles, but the data does not get stored properly. class Scores { public double[] scores = new double[10]; public String[] judges = new String[10]; public static int counter = 0; public boolean addScore(String addJudge, double addScore) { for (int i = 0; i < scores.length; i++) ... |
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Hello, so in my code I have three PFont object which I am trying to wrap into an array and pass into another object through a constructor and here is what I got. PFont font1; PFont font2; PFont font3; PFont[] fonts ; Graph g,g1; public void setup() { size(800,600); frameRate(30); fonts = new PFont[3]; font1 = loadFont("AkzidenzGroteskBE-Md-12.vlw"); font2 = loadFont("AkzidenzGroteskBE-Md-21.vlw"); font3 ... |
array of array help (Java in General forum at JavaRanch) A friendly place for programming greenhorns! Register / Login Java Forums Java Java in General array of array help Post by: Frank Ponce, Greenhorn on Dec 06, 2006 09:30:00 I am making an arbitrary size multi dimensional array of object Square...the size of the array is decided by the ... |
Hi List, I have a multidimensional array as a field in my class which I declare at the runtime and get its elements values from a php file through parsePHP method that I have. also calling parsePHP function is running by a thread every 5 seconds,so what I am trying to do is to keep the previous array in an another ... |
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I got the array type as a class, I need to get the element from this array and convert into java.util.Date from java.util.Calendar, and somehow add back this element and return the whole obj to JSP/ public class [B]School [/B] implements Serializable protected java.util.Calendar startTime; have getter/setter protected String location; In another class I invoke this class School[] = null; School ... |