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]....
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.,
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]...
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]....
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
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]....
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]....
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] .....
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 ?
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]...
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?
I am very new to EJB. Started with Session bean demo which was working fine. (created a jar file which had EJB and a WAR file which had servlet). But face some issues when created MDB . (For that also created a JAR file which had EJB and a WAR file which had servlet).
I have used @JMSDestinationDefinitions({
@JMSDestinationDefinition(name = "java:global/jms/mySalutationQueue", interfaceName = "javax.jms.Queue")
}) in servlet and @ActivationConfigProperty(propertyName = "destinationLookup", propertyValue = "java:global/jms/mySalutationQueue") in MDB. I hope that's fine.
I am using WildFly 8 application server in "standalone-full" mode. But while deploying it I got some errors of missing dependencies. Trace of my application server log is as follows:
09:00:28,511 INFO [org.jboss.as.ejb3.deployment.processors.EjbJndiBindingsDeploymentUnitProcessor] (MSC service thread 1-4) JNDI bindings for session bean named Salutation in deployment unit deployment "SalutationProject.war" are as follows:
java:global/SalutationProject/Salutation!packt.Salutation
java:app/SalutationProject/Salutation!packt.Salutation
java:module/Salutation!packt.Salutation
java:global/SalutationProject/Salutation
java:app/SalutationProject/Salutation
java:module/Salutation
[Code] ....
This example is taken from the EJB 3.1 Cookbook's 1st Chapter. I have searched on [URL] .... but didnt get it. Have only used CDI annotations and no xml.
import java.util.*; //input from library of routines
public class guessingGame
{
public static void main(String[] args)
{
int sN = 7;
int yourGuess;
int guessCount = 0;
[Code] ....
I'm getting an error that says identifier expected and the compiler points to this as the problem:("Pick a number between 1 and 10");
I'm writing a desktop client for simple soap service (axis), and when i create a web-service client lib using netbeans wsimport tool, I don't understand why for that entity :
import javax.persistence.*;
import javax.persistence.Entity;
import javax.persistence.Table;
import javax.persistence.UniqueConstraint;
import javax.validation.constraints.NotNull;
import org.hibernate.cfg.*;
[Code] ....
My question is why generated artifact doesn't have "overral" property and what i must rewrite to fix that issue ?
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.text.*;
public class aaa extends JFrame
{
private JPanel combinationp, np, ap, dp, surgeryp, medicationp, infop; // input = name, address, days
private JLabel namelabel, addresslabel, dayslabel, infolabel;
private JTextField nametf, addresstf, daystf, selectedsurgerytf;
private JButton calcButton;
[Code] .....
Currently I try to integrate a JavaFX BarChart into my existing Java application. Therefore I need a BufferedImage of my BarChart, so that I can render that snapshot on a Graphics instance.
I adapted the existing BarChartSample.java (Chart Sample | JavaFX Tutorials and Documentation) and removed all animations. The code itselfs works fine but I identified one problem -> my TickLabels are missing
The TickLabels are visible If I use JDK 1.7u51 but if I change to JDK 1.8u05.... than the stlye of my BarChart will be changed and my tick labels are not visible.
Did I missed something or is that a bug?
using JDK 1.7u51
[URL] .....
using JDK 1.8u05
[URL] .....
My adapted code is the following:
package barchartsample;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;
[Code] .....
I have a problem where I have to create random integers from 1 to n + 1. When the array is displayed I have to find the missing integer from the values that are displayed and show that value. I have to use O(n^2) and O(n) operations. I have created this code so far but I cannot figure out how to make my values display n + 1. It is only displaying values 1, 2, 3, 4 and 5 in random order. I also cannot figure out how to find the missing value. I have created a boolean displayed statement but can't determine how to use it in this code.
=Java
import java.util.Random;
public class Task6
{
public static void main(String[] args)
{
int[] numbers = new int[7]; //create array of numbers
Random random = new Random();
boolean displayed = false; //boolean value to determine if number was displayed
[code]....
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] .....
my output fails to display me the 2nd output.Here's my code.
import java.util.Scanner;
public class year
{
public static void main (String [] args)
{
Scanner console = new Scanner (System.in);
System.out.print("Enter the choice of book(A-ABC,D-EFG):");
String x = console.next();
System.out.print("Enter the rate (1-3):");
int y= console.nextInt();
System.out.print("Enter number of kids reading:");
int k = console.nextInt();
[code]....
When I key '0" for kids, it did not appear the second print out. I don't want the first print out to be the output.
I'd like to know how to return a new array, I wrote in a method below the main method. I want to print the array but system.out.print doesn't work for arrays apparently. What structure i should use?
View Replies View RelatedI have to write a method called censor that gets an array of strings from the user as an argument and then returns an array of strings that contains all of the original strings in the same order except those with length of 4. For example if cat, dog, moose, lazy, with was entered, then it would return the exact same thing except for the words with and lazy.
Currently, my code so far just prints [Ljava.lang.String;@38cfdf and im stuck.
import java.util.Scanner;
public class censorProgram {
public static void main (String args[]){
Scanner input = new Scanner (System.in);
System.out.println ("How many words would you like to enter?");
int lineOfText = input.nextInt();
[Code] ....
I have to make new string array in the method and return words without four letters in the main method
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
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]...
I have two classes (Daughter and Son) that contain some very similar method definitions:
public class Family {
public static void main(String[] args) {
Daughter d = new Daughter();
Son s = new Son();
d.speak();
s.speak();
[Code] .....
Each of those classes has a "speak" method with two out of three lines being identical. I could move those into a parent class, but I need each of the child classes to continue to exhibit its unique behavior. I'm trying the approach below, which replaces the unique code with a call to a "placeholder" method that must be implemented by each child class:
public class Family {
public static void main(String[] args) {
Daughter d = new Daughter();
Son s = new Son();
[Code] .....
This works and moves the shared code from two places (the Daughter and Son classes) into one place (the new Mother class, which is now a parent class of Daughter and Son). Something about this feels a bit odd to me, though. It's one thing for a child class to override a parent class's methods to extend or alter their behavior. But, here, I've implemented an abstract method in the parent class to alter what happens when the parent class's method (speak(), in this case) is called, without overriding that parent class method itself.
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]....
Which method is used while passing or returning a java object from the native method?
View Replies View Related