Passing Parameters And Return Statement

Apr 27, 2014

My task is to make a mortgage calculator where the user selects which calculation they want the program to do via a menu. I got the menu to work and it keeps on looping until terminated so that's good. The starts when I want the user's choice (P, I or T) to be used in another method which will then execute another set of code (the calculation that needs to be done). I think passing parameters and return statements are what I need to use, but after reading and watching videos, I'm still not sure how to implement it into my program. For now, I want the user to input the letter "P" and then I want that information to be passed to the method, loanCalculator() where the if statement will make a decision to call the method, calcPayment and display the number 0 via the console. Once it can do that, I'll fill in the calculation methods with the proper code since I can at least navigate the user input to its associated calculator. It just keeps on looping the menu without going through the other methods.

import java.util.Scanner;
//Example of "big loop" in main to repeat using a No Trip (0,N) test first
public class Mortgage {
// constants
static double loanAmount;
static double interestRate;
static int term;

[code]....

View Replies


ADVERTISEMENT

JSF :: Passing Parameters From Servlet

Sep 12, 2014

I'm trying to pass a parmeter to a jsf page from a servlet(i.e. associated with paypal adaptive api), but I keep getting the following error, even though the productType on ProductDetailsVO is a String.

INFO: WARNING: FacesMessage(s) have been enqueued, but may not have been displayed.

sourceId=j_idt2[severity=(ERROR 2), summary=(j_idt2: '45;productType=Sport'

must be a number consisting of one or more digits.), detail=(j_idt2: '45;productType=Sport' must be a number between -2147483648 and 2147483647 Example: 9346)]

Calling JSF page contains:-

returnURL = new URL(new URL(request.getRequestURL().toString()),"pages/paypalpaymentapproved.xhtml?paypalID="+paypalID+";productType=Sport");
response.sendRedirect(returnURL.toString());

[Code] ....

View Replies View Related

BufferedReader - Passing Parameters

Mar 7, 2015

Using Eclipse. I have this line of code:

BufferedReader br = new BufferedReader(new InputStreamReader(in));

I want to do something with br in a method that I defined. But Eclipse is complaining about br declared as

public static void Get_Next(String next_line, BufferedReader br) {

How do I make this work?

View Replies View Related

JSP :: Passing Dynamic Parameters Through Href Tag

Aug 3, 2011

I am trying to pass additional information through <a href> tag

<a href="welcome.jsp & param=<%=add.getID()%>">Welcome </a>

The error is : HTTP Status 404 - /WebApp/welcome.jsp & param=6

The id obtained from add.getID() is displayed in address bar on the browser.

I want to use this id on the next page. I try to use :

request.getParameter("param");

But could not get the ID....

View Replies View Related

JSF :: Passing Argument Parameters Between Pages

Jul 19, 2014

So I have an application where the user logs in (using j_security_check). User is taken to a welcome page where user's name is displayed as a link. When clicking that link I would like to take the user to a page where the user is able to update the credentials (password, address, etc). In this way the user only has access to the link related to that specific user's credentials. I am trying the following structure:

The welcome page (adminindex.xhtml) is:

<h:form>
Welcome to admin <h:commandLink value="#{userb.loggedUser}" action="#{userb.selectedUser}"/>
<f:param name="userName" value="#{userb.userName}"/>
</h:form>

The user backing bean:

public String selectedUser() {
userName = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get(userName);
selUser=uServ.findByName(userName);
return "UpdateUser";

[Code] ....

The last line of the stack suggests that a null PK value is being picked up by the FacesContext method in the backing bean. I'm confused because the userName string IS the primary key of the user table which is structured like this:

CREATE TABLE sha_users
( username VARCHAR(255) NOT NULL
, password VARCHAR(255) NULL
, PRIMARY KEY ( username ) );

I'm sure I'm getting the concept of how to pass query parameters...

View Replies View Related

JSP :: Passing Parameters To Custom Tag Error

May 14, 2014

I am not able to pass parameters to custom tag. This is my tag file header.tag under web-in/tags folder

<img ><br>
<b><i>${subTitle}</i></b>

And This is my jsp page that use that tag.

<%@ taglib prefix="myTags" tagdir="/WEB-INF/tags" %>
<html>
<body>
<myTags:header subTitle="We make sure our clients dont have to do that" />

</body>
</html>

It says attribute subTitle invalid for tag header according to TLD.

View Replies View Related

JSF :: Passing Parameters From Normal List Object Without Using DataModel

Oct 9, 2014

How to use the id parameter in my documents entity to download documents from a list of documents. Normally I use ListDataModel and the getRowData method. I would like to know how to achieve the same thing using an ordinary List object.

My list of documents is called List<CountryDocs> selectedDocs;

<h:form>
<p:dataTable value="#{countryDocBean.selectedDocs}" var="docs">
<p:commandLink id="download" value="Download" ajax="false">
<p:fileDownload value="#{countryDocBean.downloadedFile}"
contentDisposition="attachment"/>

[Code] ....

Clicking on the download link calls the following method in my managed bean:

@ManagedBean(name = "countryDocBean")
@SessionScoped
public class CountryDocBean {
private List<CountryDocs> selectedDocs;
public StreamedContent getDownloadedFile() {

[Code] ....

Debugging shows the value for the id is 0 and this results in a NullPointerException. I've tried several methods for grabbing the document id in my backing bean, but no luck yet. I also read about the the ViewParams and ViewAction method but they caused validation errors to do with the <f:metadata> tags. I don't know how to obtain this value using a normal List object.

View Replies View Related

Passing Parameters - Randomly Generated Numbers Not Appearing

Dec 14, 2014

For some reason, when I test out my code, my randomly generated numbers don't appear. Here is a sample result:

> What do you want to generate, integer, double, or character?

>integer

>What is the upper limit and lower limit of the integers you want to generate?

>1

>10

>How many integers do you want to generate?

>10

>BUILD SUCCESSFUL (total time: 9 seconds)

Is this because my code is not passing my parameters correctly? I'm not sure how to fix this either.

Here is my code for reference (it's not completed at the moment)

import java.util.Scanner;
public class NewNumberCharacter {
/** Main method
* @param args */
public static void main(String[] args) {
int return_int;
double return_double;

[Code] ....

View Replies View Related

Cannot Get Parameters For If Statement Right?

Mar 1, 2015

I have this JAVA written but I can't get the parameters for the if statements right.

import java.util.Scanner;
public class myFirstJAVA {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Please enter command: ");
String text = input.nextLine();

[Code] ....

View Replies View Related

Passing Objects From Client To Server - Receives But No Return

Apr 30, 2015

I'm trying to pass an object to a server and then back again. The object gets to the server fine, but either the server doesn't return it correctly or the client isn't accepting it. There's not error's. The client just prints the object as null. Not really sure why, I looked at other examples and they seem to be the same.

Client:

public class main {
public static void main(String[] args) throws IOException {
String serverAddress = JOptionPane.showInputDialog(
"Enter IP Address of a machine that is" +
"running the service on port 9090:");
Voter you = prompt();

[Code] .....

View Replies View Related

Return Statement In A Constructor

Jan 8, 2014

What is the difference between two statements:

Class1 class1 = new Class();
class1 = Class2.method1();

and

Class1 class1 = Class2.method1();

I have one more query on the same lines ... I always need to call the method1 of Class2 whenever i create a object of class1. So I wanted to go with the constructor in Class1. But the method1 in Class2 has a return statement. so is there any better way to do this other than constructors.

Sample code:

public int class Class2{
public static method1(){
return 2;
}
}
public class Class1{
public Class1(){
Class2.method1();
}
}

View Replies View Related

Missing Return Statement

Nov 20, 2014

This was an example of code that I'm trying to get to work, I swear I took it down just as it was written in class however mine says missing return statement....

Scanner keyb = new Scanner(System.in);
System.out.print("enter rows and columns");
int rows = keyb.nextInt();
int cols = keyb.nextInt();
int[] [] array = new int [rows] [cols];
printArray(array);

[code]....

View Replies View Related

Method Return Statement

Apr 2, 2014

Im having trouble with my method return. I am new to using methods and cant seem to grasp the idea on the return part. I have to write a method that tells if a number is prime or not. This is what I have so far and it wont compile because it is saying "missing return statement } "..

import javax.swing.JOptionPane;
public class IsPrimeMethod
{
public static void main(String []args)
{
String primeNum;
int number;
int i = 2;
 
[code]....

View Replies View Related

Return Statement In Method Overriding

Jan 1, 2015

class Base
{
public Base rtc() {
System.out.println("am in parent");
return new Base();
}
}
class Ret extends Base

[Code] ....

Output :

I am in child class but b1.rtc requires b2 to hold the return value y not Ret's object.

View Replies View Related

How Does Return Statement Work In Try Catch Block

Jul 2, 2014

consider this program :

public class hello {
/**
* @param args
*/
public static void main(String[] args) {
int s = new hello().h();
System.out.println(s);
} public int h(){
try{
int g = 10/0;

[Code] .....

the output is 7. how the flow is working. i understand that there is a divide by zero exception after which the control goes to catch. what about the return statement in catch . why is it overridden by finally..........

View Replies View Related

Argument Program - Missing Return Statement

Jan 22, 2015

I am trying to compile the arguments program but it is giving missing return statement error. how to correct the error message.

public class Arguments {
public static Void main ( String args[])
{
int count, i=0;
String sdata;

[code]...

View Replies View Related

Incrementing Array Index During Return Statement

Feb 14, 2015

I am trying to understand the following code.This return statement should actually return the char at myArray[index] first, then increments the index afterwords correct?

Public char next(){
return myArray[index++];
}

View Replies View Related

If Statement Requires A Return Of Type Boolean

Dec 6, 2014

Im trying to do this

if( 2/2 ) {
system.out.println( "number is not event" );
} else {
system.out.println( "number is event" );
}

However if statement requires a return of type boolean. So im forced to this instead

if( (2/2) != 0 ) {
system.out.println( "number is not event" );
} else {
system.out.println( "number is event" );
}

Is there a way to achieve the former method, without typecasting, if you had to typecast how do you do it?

View Replies View Related

JDBC SQLException - Statement Did Not Return Result Set

May 4, 2014

I get an Sqlexecption with this message "com.microsoft.sqlserver.jdbc.SQLServerException: The statement did not return a result set."

When I execute this query :

...
Statement stmt = conn.createStatement();
stmt.executeUpdate("IF EXISTS (SELECT name FROM master.sys.databases WHERE name = N'Repository')
"
                + "PRINT 'Database exists'

[Code] .....
 
I want to create a database and a table in sql server if it doesn't exist. How can i prevent this error.

View Replies View Related

Formatting Doubles To Two Decimal Places Within Return Statement

Jan 25, 2015

I'm attempting to format my doubles to two decimal places within my return statement. I have tried to use DecimalFormat but it gives me an error because my method needs to return a double and that results in a string being returned. I have also tried using the *100.00/100.00 method and that doesn't work when the number already ends in 0.

If I pass -150.00 it gives me -150.0 when I need two decimal places.

How can I go about doing this?

View Replies View Related

User Input Random Numbers Then Program Sort Them In Different Ways - Missing Return Statement

Apr 7, 2014

I have been assigned to write a program that has a user input random numbers then the program is to sort them in different ways. I have the coding for the different sorts but, I have an error saying that I am missing a return statement in the "Bubble" method. I am trying to return "arr[i]" in the "for loop" which gives me this error, and when I try to take the "return arr[i]" outside of the "for()" loop the error reads the it cannot locate variable "i".

import java.awt.* ;
import java.awt.event.*;
import javax.swing.*;
public class SwingSorts extends JFrame implements ActionListener
{
JRadioButton bubble;
JRadioButton selection;

[Code] .....

View Replies View Related

How To Link Compress Method To Return Statement Method GetPText

Oct 30, 2014

Alright, I don't understand how to link my compress method to my return statement method "getPText". Also in my compression I only want it to compress for 3 or more consecutive letters.

import java.util.Scanner;
class RunLengthCode {
String pText;
String cText; 
void setPText(String PText) {
pText = "";
}

[Code]...

View Replies View Related

Method Must Return Int Type - If Given Integer Is Strong Return A / If Not Return B

Sep 7, 2014

I want to use a method, which takes for example an int and also returns an integer. For example, if the the given integer is strong return a, if it is notstrong return b. How would you write that in a Code?

I want to use that in a more general way. I want to give a method mlong the value X of the type date and let it return an int. Type date consists of 3 int, one of them is the int month.

mlong should return an int depending on the X.moth. at the moment my code looks like this:

// File1:
public class date {
public int day;
public int month;
public int year;
}

// File 2:
public class monthlength {
public int mlong(date X) {
int t;
t = X.month;
if (t == 1 || t == 3 || t == 5 || t == 7 || t == 8 || t == 10 || t == 12)
{ return 31; }
if(t == 4 || t == 6 || t == 9 || t == 11)
{return 30;}
}
}

View Replies View Related

How To Return Values In Object Return Type Function (method)

Apr 2, 2014

How do i take input values for TwoDPoint (which are objects) and return it back in numerical values also print them.

When i create an object in main method and pass values to my function of return type TwoDPoint,it gives error:- found int,int need TwoDPoiint,TwoDPoint.

// Here is what i tried to do:

Created class TwoDPoint that contains two fields x, y which are of type int. Defined another class TestTwoDPoint, where a main method is defined.In the main method created two TwoDPoint objects.

Then I modified the class TestTwoDPoint and add another function to it. This function takes two TwoDPoints as input and returns the TwoDPoint that is farthest from the point (0,0).

Then I added another function to TestTwoDPoint. This function takes two TwoDPoints as input and returns a new TwoDPoint whose x value is the sum of x values of the input TwoDPoint's and whose y value is the sum of the y values of the input TwoDPoint's.

class TwoDPoint {
int x = 2;
int y = 4;
}
class TestTwoDPoint {
public static void main(String args[]) {
TwoDPoint obj1 = new TwoDPoint();
System.out.println(obj1.x);
System.out.println(obj1.y);

[Code] ....

View Replies View Related

How To Turn If Statement Into A Case / Switch Statement

Jun 19, 2014

So from what iv learnt in Java and programming in general is that using a case statement is far more efficient that using multiple IF statements. I have an multiple IF statements contained within a method of my program, and would like to instead use a case statement.

public String checkPasswordStrength(String passw) {
int strengthCount=0;
String strengthWord = "";
String[] partialRegexChecks = { ".*[a-z]+.*", // lower
".*[A-Z]+.*", // upper
".*[d]+.*", // digits
".*[@#$%!]+.*" // symbols

[code].....

View Replies View Related

Using Switch Statement Inside If Statement

Nov 18, 2014

So I want to make a simple Java that ask the user to pick a powers and it has two options.If the user picks magic then execute the first if statement then ask the user again which type of magic the user wants.I can't make it work it keeps printing the else statement. Why is that?

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

[code]....

View Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved