Swing/AWT/SWT :: Compile Error - Cannot Find Symbol With SetDefaultCloseOperation
Jul 21, 2014
This is likely a simple matter, but my error is confusing given the line it flags matches a working project I have. I get the following error on line 6 in the Controller:
cannot find symbol
v.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
...........................................^
(carrot at the J)
My view file:
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class View extends JFrame{
private JLabel lbl;
private JButton btn;
programming altogether and after almost reaching half way in the 'Head first java' book I decided to try and apply some of what I've learnt so far and write my first 'Object orientated' program. As this is pretty much the first program I've ever written, I decided to write a program to ask for two integers and add them both together and then present them to the user (the goal eventually being a basic fully working command line calculator with +,-,* and /. I'm expecting many compile errors but not the following errors below.
I have three .java files contained within a folder and after trying to figure out how to compile all three files (as they use one another) all at once, I came across this ---> javac *.java
so I typed this in the command line whilst in the directory containing the three files assuming *.java is the best approach and then I receive the following errors:
inputOutput.java:10: error: cannot find symb c.addition() = intIn.nextInteger(); ^ symbol: variable c location: class inputOutput
I decided to code this quiz I took in class about asking the user to input a string and the code is suppose to check for upper case letters. If a upper case letter is found, it should increase a count by one. Once the check is done, it should display the number of uppercase letters. For some reason I am getting this weird compile error stating that symbols can't be found...
Java Code:
import java.util.*; import java.lang.*; public class StringCheck{ public static void main(String[] args){ Scanner input = new Scanner(System.in); System.out.println("please enter a string: " ); String s = input.nextLine();
I'm doing a course on java but cant seem to get my servlet to compile i keep getting this error im seriously stressed out iv missed my dead line
errors: C:UsersReignDesktopWebStocks.java:20: package javax.servlet does not exist import javax.servlet.*; ^ C:UsersReignDesktopWebStocks.java:21: package javax.servlet.http does not exist import javax.servlet.http.*; ^ C:UsersReignDesktopWebStocks.java:27: cannot find symbol symbol: class HttpServlet public class WebStocks extends HttpServlet
I am using textpad to compile and Tomcat as a webserver...
I have written the below program and while compiling i am getting error. The program and error details goes as follows,
//compute distance of light travels using Java long variable. class Light { public static void main(String args[]) { int lightspeed; long days; long seconds; long distance;
[code]....
I have given the Java file name as 'Light.java'. I have also verified the availability of the java file and compilation path. both are matching. Also, Java file name and class name defined are also same.
I keep getting errors, cannot find symbol. Not sure where I am going wrong.
java:139: error: non-static method integerPrompt(String,int,int) cannot be referenced from a static context int regNumber = integerPrompt("Enter registration number", 100, 5000); ^ Program7.java:145: error: cannot find symbol theSubject = integerPrompt(SubjectsPrompt, 1, SubjectQty); ^ symbol: variable theSubject location: class Program7
Java Code:
import java.util.*; import java.io.*; import java.util.Scanner; public class Program7{ public static void main(String args[]){ Student student = new Student();
I thought I have been getting this right, but I keep getting stuck on this one error. Here is my code. Why it keeps getting a 'cant find symbol' error?
// import statements import java.util.Scanner; // class declaration public class GradeConverter { // main method declaration public static void main(String[] args) { // display a welcome message
[code]....
It is just a simple input a number between 1-100 and it spits out the letter grade.
I'm picking up Java for a class, and having prior C++ knowledge this stuff has been fairly straightforward with the exception of trying to learn the whole IO system in this language.
className.java:line_number: error: cannot find symbol myList.add(input); ^
I have dealing with this error left and right after picking up this language, and I can never seem to figure out what it's trying to tell me. I've heard people say it's referring misspelled objects or methods, but I've double and triple checked my code and that never seems to be true for me.I'm trying to make a small program which will allow me to play with the LinkedList object so I can gain some familiarity with how they work in Java, and I have this code so far:
import java.io.*; import java.util.*; public class playWithLists { public static void main(String[] args) throws Exception { //List<String> myList = new LinkedList<String>(); LinkedList myList = new LinkedList(); BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String input = "";
[code]....
The compiler is giving me an error at line 16 (specifically: myList.add(input); )
import java.util.*; public class CQ1v1{ public static void main(String args []) { Scanner in = new Scanner (System.in) ; String name = ""; System.out.println("Welcome to the Interrogator") ;
[Code] ....
When I compile getting
CQ1v1.java:12: error: cannot find symbol x = in.nextLine (); ^ symbol: variable x location: class CQ1v1 CQ1v1.java:21: error: cannot find symbol
I am working on a StringBuffer program and I am getting the following error message: Cannot find symbol - method append(java.lang.String) with this part of the code selected:
I am writing a palindrome program. I don't understand what is wrong with my Main method. It is giving me error and error is "Can not find symbol in main method"
import java.awt.*; import java.awt.event.*; import javax.swing.*; public class PalindromeA extends JFrame { private JTextField inText; private JTextField outText;
I am trying to create this program I am pretty sure it is easy but I am making it difficult lol, it keeps giving me a error, it is saying cannot find symbol - variable keyboard, I don't think I have keyboard as a variable but I may be wrong.
double distancel = keyboard.nextdouble(); that is the specific line ....
import javax.swing.JOptionPane; import java.io.File; import java.util.Scanner; //import java.util.totalInches; //instance variables public class Map{ public static void main(String[] args){
I am stuck. It seems like I have done everything by the book but I keep getting the same error: cannot find symbol. The error is specifically addressing lines 9, 10, and 11 in the Alien class file. All that is supposed to happen is an output of information for the two types of aliens.
Java Code:
import javax.swing.*; public class CreateAliens { public static void main (String[] args) { Martian aMartian = new Martian(); Jupiterian aJupiterian = new Jupiterian(); JOptionPane.showMessageDialog (null, "
The program is just a simple one to print grades using only methods. The problem is Im trying to use a returned value in another method but the compiler keeps telling me it cannot find the symbol "mark". the problem areas are marked in blue. I am basically trying to input a value into the keyboard and then use it in another method.
public static void main(String[] args) { printTitle(); enterMark(); gradeCalculator(mark); printGrade();
I have an Input Box in which the user is supposed to enter the answer to a sum, when the answer is equal to the correct answer I want to show a MessageBox that tells them they've got it correct. But when I run the project it crashes saying it 'cannot find symbol',
Heres the code too:
import javax.swing.*; import java.util.Random; import java.util.Scanner; public class SwingInputExample { public static void main(String args[])
Im running into some problems with the Java compiler. This is my code:
public class DoublyLinkedList<T> implements SimpleList<T> { protected Node dummy; protected int n; public DoublyLinkedList(){
dummy = new Node(); dummy.next = dummy; dummy.pre = dummy;
n = 0;
[Code] ....
I want to use a dummy node in my implementation of the Doubly Linked List, so it will be easier to code all the methods I need to write. I keep on getting a problem with line 14 and 15:
dummy.next = dummy;
dummy.pre = dummy;
// cannot find symbol variable next (compiler error)
I am having trouble compiling my simple java program, i keep having this "cannot find symbol"Untitled.jpg but the ODD thing is when i tried to run my code through online java compiler like Ideone.com it compiles perfectly fine. "Check it here".is it because of my jdk? I use the latest jdk 8. and the book I'm following is "Head First Java"..here's my code
My assignment is to create an ObjectOutputStream object mapped to a binary output file named "ItemRecord_binary.txt". So far I've created a ItemRecord class with a constructor with getters and setters and a override toString method. It compiled. This ItemRecordReport class does not compile because of a can't find symbol error. Here is the code:
import java.io.*; import java.io.IOException; import java.io.ObjectOutputStream; import java.util.Scanner; public class ItemRecordReport { private ObjectOutputStream output;
