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]....

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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]...

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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] .....

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Boolean Return Missing

Sep 25, 2014

So I'm trying to check if the new coordinates vs original coordinates are diagonal and 1 line further, and if there is a piece there(getNum()) if it's 2 lines further, so I'm trying to return a boolean value then.

so if it's the first if, it returns true, if it's the 2nd it returns true, then I say else for all other scenario's, and return false there, but my compiler says my method is missing a return statement.

public boolean check(int[] d) {
int x,y;
x = loc[0][0];
y = loc[0][1]; 
int sx = d[0];
int sy = d[1];

[Code] .....

Edit: used a local boolean and returned that after my if's.,

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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();
}
}

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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]....

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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.

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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]....

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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..........

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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++];
}

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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?

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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.

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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?

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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]...

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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;}
}
}

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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] ....

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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].....

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Missing Method In GUI

Apr 1, 2014

I have written the following test program, but I keep getting the same error: Return type for the method is missing.

Java Code:

import javax.swing.*;
import java.awt.*;
public class BUTTONtest {
private JFrame frame;
private JButton btnOK;
private JButton btnStop;
private JButton btnStop1;

[code]....

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Missing Symbol Error

Apr 19, 2014

When I put this code in throw new IllegalStateOperation("SortType is invalid"); it states that it can't find the symbol IllegalStateOperation. What should I do to initialize the symbol/variable IllegalStateOperation?

Here is the entire code: :

class HairSalon implements Comparable<HairSalon> {
static final int sortByService = 0, sortByPrice = 1, sortByTime = 2;
private String service;
private double price;
private int time;

[code]...

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Missing IN Or OUT Parameter At Index

Mar 24, 2014

I use :

ResultSet rs = null;
ps_getValue = conn.prepareStatement(s_getValue);
               ps_getValue.setString(1, sValue1);
rs = ps_getValue.executeQuery();

Error :

java.sql.SQLException: Missing IN or OUT parameter at index:: 1

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Missing Converting String To Array

Sep 8, 2014

I am obviously new to programming and Java so I set myself the goal of creating a very simple auto type style of program so it gets the users input and relays it out again but potentially to another window (I am currently testing to notepad). The reason I am trying to make it is because i thought it could be quite simple and I can build on it as a project to make it better.

The issue I am having is that it outputs the first character to the window I am selected (again testing into notepad) but then stops and doesn't output anything else. I tried to figure out what was going on by putting a System.out.println(arr[6]); after the delay method but it just output a line so almost like what I was putting into the array was only storing the first character of the string? I cannot figure out why that would be...

import java.awt.*;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.util.Scanner;
public class MyBot
public static void main(String[] args) throws AWTException {
//initialising robot
Robot r = new Robot();
Scanner input = new Scanner(System.in);

[code]....

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Dec 24, 2014

I am building a java app and i am wanting to color the 6th 8th and 10th columns differently to make them stand out.

// It creates and displays the table
tableEng = new JTable(buildTableModel(rs));

for(int i=0;i < tableEng.getColumnCount();i++){
packColumn(tableEng,i,5);

[code]....

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Hangman - Main Class Missing

Mar 31, 2015

I am having an issue with this code. It says that I'm missing the main class.  
 
import java.util.Random;
import java.util.Scanner;
public class Assignment5Hangman
{
public class GetData
{
private Scanner input;
public GetData()

[Code] .....

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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]....

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Many Errors For A Missing File In Stack Trace

Mar 6, 2014

Why do I see many exceptions for one missing file on the stack trace ? My guess is, where ever that file or methof is being called , all of them will throw exceptions. So, where do I find the root exception, first one which is thrown OR the last one ?

java.io.FileNotFoundException: c: emppw.txt (The system cannot find the file specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:120)
at java.util.Scanner.<init>(Scanner.java:636)
at com.rbc.ReportDriverRunner.getPassword(AuditReportDriverRunner.java:39)

[Code] ....

In the above stack trace, "java.io.FileNotFoundException: c: emppw.txt (The system cannot find the file specified)" is the root cause (Assuming there is only one error which causes code to fail) ? Is the first one cause of failure whch then cascades failure of other methods ?

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First Character Is Missing While Reading Input Stream

Jul 10, 2014

This is my code

// TODO Auto-generated method stub
File file=new File("D:/input.txt");
java.io.FileInputStream is=new java.io.FileInputStream(file);
int a=is.read();
try {
while((a=is.read())!=-1) {
System.out.print((char)a);

[Code] .....

My text in file is :my birthday Hello World

But in out i see only:y birthday Hello World

Why is first character is missing here?

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