I found some code online to draw a pink heart.. sort of a valentine's day heart.. I would like to add to it and customize it some... But I can't get it to work as-is.. I get a compile error that "StdDraw Cannot be resolved" ...
import java.util.Scanner; import javax.swing.JOptionpane; public class Project { public static void main(String[] args) { Scanner input = new Scanner(System.in);
[code]...
This is the Error that i get in console!"Exception in thread "main" java.lang.Error: Unresolved compilation problem: JOptionPane cannot be resolved at Project.main(Project.java:10)"
I am trying to read a file that will be contained within the Jar. I have created a source folder in eclipse and put the file in there. The examples I can find online to do this are not working out for me. I am getting an error that getClass cannot be resolved.
Java Code:
private static void help() { version(); try { InputStreamReader is = getClass.getClassLoader().getResourceAsStream("data/cmdhelp"); int c; do { c = is.read(); System.out.print((char) c); } while (c > -1); System.out.println(); } catch (IOException e) { System.out.println("JAR file has not been packaged correctly."); } } mh_sh_highlight_all('java'); The error from eclipse:
getClass cannot be resolvedCommand.java/accface/src/frontendline 29Java Problem
Here is my current code. The CustomerName in the System.out.print statement doesn't compile - it says that CustomerName can not be resolved to a variable. But why is that true? it is declared and assigned a value in the for loop.
Query query = em.createQuery("select CustomerName from web_cost_file,customer " + "where web_cost_file.customer=customer.id and web_cost_file.customer=" + costsFileList[0]); List<Object[]> listCustomerName = query.getResultList();
for (Object[] result : listCustomerName) { String CustomerName = result[0].toString(); } System.out.print(CustomerName);
I am trying to use a custom class in a .jsp page, as part of a course I am taking on Web Technologies.The original version of the jsp page was working fine, until I moved part of the Java code to a separate class.Here is the original .jsp code that is working:
I am getting an error stating that 'word cannot be resolved to a variable' pointing to my return value. Why? Should I make a default String value for word before my while loop or something, like
String word = " "; ?
String getItRight(){//make sure the user enters the password correctly Scanner input = new Scanner(System.in); boolean repeating = true; while(repeating){
I'm not sure why I'm getting these errors. They only begin to happen after the second if statement, and the subsequent if statements are formatted exactly the same.
The errors are marked by the comments in the code.
Java Code:
import java.util.*; import java.io.*; public class GazillionSongs { public static void main(String[] args) throws FileNotFoundException { System.out.println("Welcome to Java Song Collection!"); System.out .println("This program sorts and filters large databases of popular songs.");
The error "cannot resolve to a variable". I get the error I just can't seem to fix the error.Presently I am working my way through the Oracle docs and that seems ok. Java for Dummies, Sams teach Yourself Java in 21 Days, plus my favorite Head First Java.
package tutorial; import java.util.*; public class HolidaySked { BitSet sked; public HolidaySked(){ sked = new BitSet (365); int [] holiday = {1,15,50,148,185,246,281, 316,326,359}; for (int i = 0; i<holiday.length; i++){ addHoliday(holiday[i]);
I've been using Eclipse and I realized that it compiles stuff into class files for you. So, I created a new project and each class is a separate .java file, with the .class files already there, but I cannot get rid of these errors. Or, say if I wrote them all into one file and then realized it needs to be 3 separate, or that all need to be in the same src file (oops)? Here are the errors:
Exception in thread "main" java.lang.Error: Unresolved compilation problems: random cannot be resolved or is not a field guessp1 cannot be resolved to a variable guessp1 cannot be resolved to a variable guessp2 cannot be resolved to a variable guessp2 cannot be resolved to a variable guessp3 cannot be resolved to a variable guessp3 cannot be resolved to a variable guessp1 cannot be resolved to a variable guessp2 cannot be resolved to a variable guessp3 cannot be resolved to a variable
<%@page import="java.sql.*" %> <% //Register the drivers DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver()); //Establish connection with the database Connection con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","system","manager");
[Code] ....
This is my program...then I am getting following error.
type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: Unable to compile class for JSP:
I've created a constructor in bean and put an value to my string after doing so all started to work properly. I am trying to get my application to work but no luck so far. I have looked for similar issues but although there were similar I've got no luck in fixing mine.
When I am trying to put an value in the input file i got error message (/zadanie_1.xhtml @15,75 value="#{z_1.lancuch}": Target Unreachable, identifier 'z_1' resolved to null).
My starting page:
<?xml version='1.0' encoding='UTF-8' ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://xmlns.jcp.org/jsf/html">
I am getting the error message as Exception in thread "main" java.lang.Error: Unresolved compilation problems: NewExcel cannot be resolved to a type for the line NewExcel test = new NewExcel(); in the below code to read the columns from an excelsheet "test.xls". Why I am getting the error message :-
import java.io.File; import java.io.IOException; import jxl.Cell; import jxl.Sheet; import jxl.Workbook; import jxl.read.biff.BiffException; public class ReadExcel
I am trying to implement the JSF 2.0 project with Primefaces from one of the tutorial, i con login with only jsf but not when i use primeface where i am getting following error.
Error Log
HTTP Status 500 - /login2.xhtml @23,98 value="#{employee.userName}": Target Unreachable, identifier 'employee' resolved to null type Exception report message /login2.xhtml @23,98 value="#{employee.userName}": Target Unreachable, identifier 'employee' resolved to null description The server encountered an internal error that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: /login2.xhtml @23,98 value="#{employee.userName}": Target Unreachable, identifier 'employee' resolved to null javax.faces.webapp.FacesServlet.service(FacesServlet.java:321) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)root cause
[Code] ....
Note The full stack trace of the root cause is available in the Apache Tomcat/7.0.57 logs. in Apache Tomcat/7.0.57
In my application, some text should be added to a text area in response to a click on a button. So as an action listener to this class, I made another class which implements the ActionListener.
Inside this class, I have obtained the text which I want to be added to the text area. But the text area is in another class and for the action listener I wrote another class.
Now the problem is that when I try to add the text to the text area by the following line of code, it says that textArea_1 can not be resolved or is not a field.
Java Code:
ParentPanel.textArea_1.setText("Name:"+ncrarray[0]+" Code:"+ncrarray[1]+" Rank:"+ncrarray[2]); mh_sh_highlight_all('java'); What should I do about it?
Even if I try to write a method like the following in the class in which the text area is created, it gives the same error.
Java Code:
public void printTextArea(String text) { textArea_1.setText(text); } mh_sh_highlight_all('java');
The text area is present inside a constructor of the class. I am writing the method outside the constructor (ofcourse).
What I'm trying to do here is to count the vowels in an arraylist of strings. What I did may not be right, but that's not my problem for now. My problem is that i cannot return the value (n) I want to return. I don't know why.
import java.util.*; import java.util.Arrays; public class One { public static void main(String[] args) { ArrayList<String> list = new ArrayList<String>(); list.add("aaa"); list.add("brr"); list.add("unn"); System.out.println(vowels(list));
