How To Resolve StackOverFlowError When Using Recursive Method Call
Mar 24, 2014
I have 3 Xml documents that look like this:
model1:
Java Code: <?xml version="1.0" encoding="UTF-8"?>
<model>
<id>1</id>
<nodes>
<id>2</id>
<stencil>TASK</stencil>
</nodes>
<nodes>
<id>3</id>
<stencil>MODEL</stencil>
[Code] ....
After unmarshalling/marshalling in the main class I have created this 3 methods:
Java Code:
public List<Task> extractTasks(Model model) {
List<Task> tasks = new ArrayList<Task>();
for (ModelNodes modelNodes : model.getNodes()) {
if (modelNodes.getStencil().equals("TASK")) {
tasks.add(new Task(modelNodes.getId()));
[Code] ....
When the recursive call to the extractSubModels method is made, I get a **java.lang.StackOverFlowError** ...
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Apr 29, 2014
Consider the following recursive method that calculates the greatest common divisor using Euclidean method.
PHP Code:
public static int GCD ( int x , int y )
{
if ( y == 0 )
return x;
else if ( x >= y && y > 0)
return GCD ( y , x % y );
else return GCD ( y , x );
}
Trace the above method for x=32 and y=46
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May 9, 2015
As one of the methods of my IntTree tree I have to implement a method that multiplies the level number with the sum of the nodes on the current level. So far I have this, and it doesn't work. What I am wondering is am I on the right track at all with the second return statement?
public int depthSum(){
return depthSum(overallRoot);
}
private int depthSum(IntTreeNode root) {
if(root==null)
return 0;
int level = 0;
[code]....
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May 3, 2014
I have this code and i want to trace it
public static int GCD ( int x , int y ) {
if ( y == 0 )
return x;
else if ( x >= y && y > 0)
return GCD ( y , x % y );
else return GCD ( y , x );
}
(it is a recursive method that calculates the greatest common divisor using Euclidean method )
while x = 32 and y = 46
I want here to understand how the code work ? Precisely , composition and decomposition operations.
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Nov 13, 2014
I was told to write a method that adds up the sequence of the formula (n/2n+1) eg. 1/3 + 2/5 + 3/7 etc. simple enough i suppose. my method is below
public static double Series(int n){
if (n==0)return 0;
else return (n/(n*2+1)) + Series(n - 1);
}
However for some reason or another it returns 0 for any number that is put in. I've written it dozens of different ways with no change and i feel like something fairly obvious is being missed on my part. I am honestly intrigued and interested as to why this is happening. i assume it has something to do with the way i put the actual formula in cause if i put anything else in like simply n the recursion would work as expected.
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Nov 23, 2014
KtMok1t.jpg
Below is what I go so far, but how to do star C and E.
public class PrintTriangle
{
public static void printStars (int star)
{
for (int number = 0; number < star;number ++)
{
System.out.print("*");
[Code] ....
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Oct 3, 2014
I'm trying to understand the concept behind this recursive method called rangeSum. This method sums a range of array elements with recursion. I tried summing the elements of 2 through 5, and I tried writing down what actually happens when java executes the program, but what I get when I try to figure it out by paper is different from what netbeans gives me. Here is a snapshot of my scratch work as well as my source code. Netbeans gives me "The sum of elements 2 through 5 is 18" when I try running it but it I get 12 when I do the recursion on paper. I know that the source code is correct because it's out of the book but what am I doing wrong when I try figuring it out by hand?
XML Code:
package recursivecall;
import java.util.Scanner;
/**
* Author: <<Conrado Sanchez>> Date: Task:
*/
public class RecursiveCall {
public static void main(String[] args) {
[code]....
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Oct 22, 2014
Write down a recursive method to remove vowels in string ....
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Oct 21, 2014
How would I modify this version of a selection sort into a recursive method?
public static void selectionSortRecursive(Comparable [] list, int n)
{
int min;
Comparable temp;
for(int index =0; index < n-1; index++){
min = index;
[code]....
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May 9, 2014
a)Write a method that recursively displays any given character the specified number of times on one line.For example, the call: displayRowOf Characters(,5);
Produce a line: *****Write another method that uses a for-loop to perform the same process.
B is something like this ?
for (i=1; i<=n; i++)
i= '*' * n;
System.out.print(i);
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Apr 29, 2015
I am using what is known as a Depth First Search to solve a maze using my own Stack created class for an assignment. The reason I believe I am getting this error is because my program is never meeting the `finishSpot` condition. I have used the debugger and it looks like it is infinitely stuck at the Point before the `finishSpot`. My logic seems to be mostly correct except until the point where my maze solver tries to finish the maze.
This is a sample maze:
*****
*s* *
* * *
* f*
*****
Here is my Main which uses my created Stack class.
//Creates a Stack and determines the start and endpoints.
public static void solveDFS( char [][] maze ){
LinkedStack stack = new LinkedStack();
Point currentSpot = findPoint( maze,'s' );
Point finishSpot = findPoint( maze, 'f' );
findPath( maze,currentSpot, finishSpot,stack );
[code]....
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Feb 13, 2014
I am just trying to test this array, for a locker combination program that involves classes...but the array is printing out the whacky numbers for the location. When I try to call the method in the main, it does not work. How do I call a method that exist within a class into the main method?
public class locker {
public static void main(String[] args) {
CombinationLock();
[code]....
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Sep 29, 2014
I've never had to do a void method call. I have my void method in one class and my main (where I want to do the call) in another. How do you actually call a void method?
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May 18, 2014
How to call/define/describe self method.. below is my code :
Java Code:
public static void main(String[] args) {
banana1();
banana2();
banana3();
banana4();
banana5();
banana6();
[code]....
how exactly to call a self method ?
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Oct 3, 2014
My code has a method where the users input a bunch of variables and then those variables get added together in a new variable. What I want to know is how do I call the variable that is in the other method to another method?
import java.util.*;
public class Calc{
public static void main (String [] args){
determinevalue1();
determinevalue2();
determineTotalvalue(double value1, double value2);
[Code] ....
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Dec 6, 2014
I am trying to get the program to ask the user to enter the project grade and if it is less than 65, then I want the program to display "fail" or if it is greater than 64 than I want it to display "passed". In this project I have to include a method and I am trying to call it in my if-else statement. I keep getting an error message saying "Project.java:143: error: incompatible types: void cannot be converted to int". I posted my code below. It's a long program, but this part is toward the bottom.
import java.util.Scanner;
public class Project {
public static void main(String[] args) {
//call method
welcomeMessage();
[Code] ....
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Oct 30, 2014
I have two comboBoxes - one in main and another in my 'windows' class. The code below is in main and references the comboBox in main but I need to use the comboBoxEnv out of my 'windows' class. How can I do that so it says ComboBoxEnv rather than comboBox?
JMenuItem menuExport = new JMenuItem("Export");
menuExport.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if(comboBox.getSelectedItem() == null){
[Code] ....
I've gotten access to it by changing my code and making a method of it but I'm not sure of what I do now
exportImport.comboBoxEnv();
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Jun 9, 2014
How do i call the method without using inner classes in this example:
jt = new JTable (model) {
public boolean isCellEditable (int row, int col) {
if (col == 5) {
return false;
[Code] ....
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Apr 28, 2014
I am trying to call a java method in jsp. The main idea is to hide menu based on the user who logs in. The java class flows like this :
public class UserVerification {
public static void main(String[] args) {
UserVerification obj = new UserVerification();
System.out.print(obj.GetUserVerification("abc"));
[Code] ......
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May 26, 2015
I have the following:
public class HistoricalMoment{
private String eventName;
private ClockDisplay timeOfEvent;
public static final int MIDNIGHT_HOUR = 00;
public static final int MINUTE_ZERO = 00;
}
How can I create a method called public void addMinuteToTimeOfEvent() which calls the timeOfEvent's increment() method to add one minute to the timeOfEvent?
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Jan 3, 2015
I am currently drawing graphics onto a JPanel, by overriding the standard paintComponent method.
Is it possible to call a method to draw some predefined shapes, instead of filling this method with all the stuff I need drawn, and if so, how do I do that?
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Sep 3, 2003
I want to call the HEAD method on a servlet.If in my HTML code, I specify -
<form name="testHead" action="/servlet/servletName" method="HEAD">
And the servlet handles the HEAD method in the sense that the doGet() method returns if the method type is HEAD.When I run it, the servlet returns the code returned by the entire doGet() method. This shows that the doGet() method does not realize that it is a HEAD method and it should return back without processing further.The application server is Tomcat 4.0.
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Nov 22, 2014
I want to loop through each of my objects and call the method for each one. ( polymorphic array )
Error: Constructor Dog in class Dog cannot applied for gives Types
Required String,String
Found: no arguments
Reason actual and formal argument lists differ in length
Java Code:
public class animal {
private String m_type="";
private String m_name="";
public static void main (String[] args) {
[Code] ....
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Mar 6, 2014
I am writing a program to take user input in order to create an array, then call a void method that will read in the numbers (from user's input) and fill the array.This method must use a loop to do this.(The array is to be passed to the void method as a parameter)
in theory, this should change the contents of the array, but without returning a result. Because it is a void method, the array is only passed through the method, not returned; Am I correct?How can I return the array and display it without having to change my method type?
Here is my code:
Java Code: package program7array;
import javax.swing.JOptionPane;
public class Program7Array
public static void main(String[] args) { // main method
int howMany = Integer.parseInt(JOptionPane.showInputDialog(null, // user decides how long array is
"How many numbers are there?"));
double [] numbersArray = new double[howMany]; // creating the array
makeArray(numbersArray, howMany); // calling the array
[code]...
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Oct 11, 2014
my arraylist is declared in my main method. A string that i will be calling on is declared in my main method as well. The arraylist and string is passed to a method outside the main. I am to search for the beginning of a string and end of the string, remove those items. Then i am to pass the string with the removed items to arraylist that is called in my main with an enhanced for loop. The for loop then displays what is needed from the string and the method i created. I will posting an example of my main and method that is used in my program.
public class ExampleUrl {
public static void main(String[] args) throws MalformedURLException, IOException {
ArrayList<String> urlList = new ArrayList();
String url = "";
[Code].....
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Mar 4, 2014
I used java and jsf. I created dynamic datatable in java file. Can i call java method from setOnchange() event?
I am able to call java script function from setOnchange() event. See the below code which is working fine for java script.
HtmlSelectOneMenu selectOneMenu = new HtmlSelectOneMenu();
selectOneMenu.setStyleClass("dropdownStyleTwo");
selectOneMenu.setOnchange("openWin(this);IGNORE_UN LOAD=false");
I wrote openwin() function in java script. But i am not able to call java method change().
Code which is not working.
HtmlSelectOneMenu selectOneMenu = new HtmlSelectOneMenu();
selectOneMenu.setStyleClass("dropdownStyleTwo");
selectOneMenu.setOnchange("myclass.change();IGNORE _UNLOAD=false");
myclass is the bean of class Test. If user select any value from dropdown i want to call change java method. This function will apply the same selected dropdown value to the other record also.
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