Cannot resolve symbol class Scanner (Error)
For whatever reason I get the error message "cannot resolve symbol class Scanner" when trying to run this:
import java.io.*;
import java.util.*;
public class NameReversal
public static void main(String args[])
System.out.print("Enter your name: ");
Scanner Reader = new Scanner(System.in);
String first = Reader.next();
String finl = Reader.next();
int z = first.length();
int v = finl.length();
int y = z-1;
int f = y-1;
for(int i = y; i>=0; z--)
System.out.print(first.charAt(1));
System.out.print(" ");
for(int p = f; p >= 0; p--)
System.out.println(finl.charAt(p));
}
The Scanner class is in the JDK version 1.5 or later. You must be using an earlier version.
Similar Messages
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"cannot find symbol : class Scanner" error message
I have an error message that says:
"cannot find symbol : class Scanner"
I tried typing at the top of the program
import java.util.Scanner;but I still have the same error message.
What should I do ?
Thank you in advancehttp://java.sun.com/j2se/1.5.0/docs/api/java/util/Scanner.html
Since:
1.5
look at the javadoc, it says since 1.5 so it's not there in earlier versions.
just a guess -
Cannot resolve symbol : class odbc ERROR
Hi Helper
I am trying to compile a the following and I am getting the error
C:\jdk\websiter>javac MainServlet.java
MainServlet.java:86: cannot resolve symbol
symbol : class odbc
location: package jdbc
Class.forName(sun.jdbc.odbc.JdbcOdbcDriver);
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
import java.io.*;
import java.util.*;
* This is the servlet to send the user the names of all the sites present in the database
public class MainServlet extends HttpServlet implements ServletConstants
Connection m_con;
PreparedStatement m_pstmt;
ResultSet m_res;
Vector m_vecsiteName;
public void Init(ServletConfig config) throws ServletException {
super.init(config);
}// end of init()
public void service(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
m_vecsiteName = new Vector();
try {
Class.forName(sun.jdbc.odbc.JdbcOdbcDriver);
m_con = DriverManager.getConnection("jdbc:odbc:sitewd", "", "");
How can i fix it? thanks
VTReplace the Statement
Class.forName(sun.jdbc.odbc.JdbcOdbcDriver);
as
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); -
PLEASE HELP: cannot resolve symbol class
it's showing me the error on the following lines 7 and 9
it says cannot resolve symbol class Name and cannot resolve symbol class Phone
I also have a package name addressBook and it contains two files Entry.java and Address.java
Here is the code:
import java.io.*;
import addressBook.*;
public class AddressDr
public static void main(String[] args)throws IOException
Name name;
Address address;
Phone phone;
Entry entry;
String first, last, middle, street, city, state, zip;
int areaCode, number;
BufferedReader in;
in=new BufferedReader(new InputStreamReader(System.in));
PrintWriter outFile;
outFile=new PrintWriter(new FileWriter("Entries"));
System.out.println("Quit entered fot the first name ends the " + "application.");
System.out.print("Enter first name: ");
first=in.readLine();
while (first.compareTo("Quit") !=0)
System.out.print("Enter last name: ");
last=in.readLine();
System.out.print("Enter middle name: ");
middle=in.readLine();
name=new Name(first, last, middle);
System.out.print("Enter street address: ");
street=in.readLine();
System.out.print("Enter city: ");
city=in.readLine();
System.out.print("Enter state: ");
state=in.readLine();
System.out.print("Enter ZIP code: ");
zip=in.readLine();
address=new Address(street, city, state, zip);
System.out.print("Enter areaCode: ");
areaCode = Integer.parseInt(in.readLine());
System.out.print("Enter number: ");
number=Integer.parseInt(in.readLine());
phone=new Phone(areaCode, number);
entry= new Entry(name, address, phone);
entry.writeToFile(outFile);
System.out.print("Enter first name: ");
first=in.readLine();
outFile.close();
}OK. Here is how I did it.
I have AddressDr which is Address driver.
I have two files Address and Entry which in package addressBook.
AddressDr:
import java.io.*;
import addressBook.*;
public class AddressDr
public static void main(String[] args)throws IOException
Name name;
Address address;
Phone phone;
Entry entry;
String first, last, middle, street, city, state, zip;
int areaCode, number;
BufferedReader in;
in=new BufferedReader(new InputStreamReader(System.in));
PrintWriter outFile;
outFile=new PrintWriter(new FileWriter("Entries"));
System.out.println("Quit entered fot the first name ends the " + "application.");
System.out.print("Enter first name: ");
first=in.readLine();
while (first.compareTo("Quit") !=0)
System.out.print("Enter last name: ");
last=in.readLine();
System.out.print("Enter middle name: ");
middle=in.readLine();
name=new Name(first, last, middle);
System.out.print("Enter street address: ");
street=in.readLine();
System.out.print("Enter city: ");
city=in.readLine();
System.out.print("Enter state: ");
state=in.readLine();
System.out.print("Enter ZIP code: ");
zip=in.readLine();
address=new Address(street, city, state, zip);
System.out.print("Enter areaCode: ");
areaCode = Integer.parseInt(in.readLine());
System.out.print("Enter number: ");
number=Integer.parseInt(in.readLine());
phone=new Phone(areaCode, number);
entry= new Entry(name, address, phone);
entry.writeToFile(outFile);
System.out.print("Enter first name: ");
first=in.readLine();
outFile.close();
Entry:
package addressBook;
import java.io.*;
public class Entry
Name name;
Address address;
Phone phone;
public Entry(Name newName, Address newAddress, Phone phoneNumber)
name = newName;
address = newAddress;
phone = phoneNumber;
public Name knowName()
return name;
public Address knowAddress()
return address;
public Phone knowPhone()
return phone;
public void writeToFile(PrintWriter outFile)
outFile.println(name.knowFirstName());
outFile.println(name.knowLastName());
outFile.println(name.knowMiddleName());
oufFile.println(address.knowStreet());
outFile.println(address.knowState());
outFile.println(address.knowCity());
outFile.println(address.knowZip());
outFile.println(phone.knowAreaCode());
outFile.println(phone.knowDigits());
Address:
package addressBook;
public class Address
String street;
String city;
String state;
String zipCode;
public Address(String newStreet, String newCity, String newState, String zip)
street=newStreet;
city=newCity;
state=newState;
zipCode=zip;
public String knowStreet()
return street;
public String knowCity()
return city;
public String knowState()
return state;
public String knowZip()
return zipCode;
} -
Cannot find symbol class Scanner
hi all
i'm defining a class within a project so i can use the class inside my program, but the line:
Scanner keyboard = new Scanner(System.in);generates an error with my compiler:
cannot find symbol class Scanner
please helpyou aren't using jdk 5 or higher then. that's when scanner was added to the jdk.
download a modern jdk and you'll be fine.
% -
Cannot resolve symbol class graphics
does anyone know what the error
cannot resolve symbol class graphics means?
with this code i can't seem to call the graphics method to draw the line....any reason why?
import javax.swing.*;
import java.*;
public class LineDraw extends JFrame {
public static void main(String[] args) {
LineDraw ld = new LineDraw();
ld.setSize(500,500);
ld.setVisible(true);
ld.enterVariables();
public void init(){
private int x1;
private int x2;
private int y1;
private int y2;
public void paint(Graphics g) {
g.GetGraphics(g);
super.paintComponent(g);
g.drawLine(x1, y1, x2, y2);
public void enterVariables() {
x1 = Integer.parseInt(JOptionPane.showInputDialog("Enter x1:"));
y1 = Integer.parseInt(JOptionPane.showInputDialog("Enter y1:"));
x2 = Integer.parseInt(JOptionPane.showInputDialog("Enter x2:"));
y2 = Integer.parseInt(JOptionPane.showInputDialog("Enter y2:"));
repaint();
}well the exact error message is ...by the way now that i think about it
if the graphics method shoudl not be part of the JFrame class then what method would i use to draw 2D Graphics?
--------------------Configuration: <Default>--------------------
C:\Documents and Settings\c1s5\My Documents\LineDraw.java:21: cannot resolve symbol
symbol : class Graphics
location: class LineDraw
public void paint(Graphics g)
^
1 error
Process completed.
and the exact code is
import javax.swing.*;
import java.*;
public class LineDraw extends JFrame {
public static void main(String[] args) {
LineDraw ld = new LineDraw();
ld.setSize(1024,500);
ld.setVisible(true);
ld.enterVariables();
private int x1;
private int x2;
private int y1;
private int y2;
public void paint(Graphics g)
super.paintComponent(g);
g.drawLine(x1, y1, x2, y2);
public void enterVariables() {
x1 = Integer.parseInt(JOptionPane.showInputDialog("Enter x1:"));
y1 = Integer.parseInt(JOptionPane.showInputDialog("Enter y1:"));
x2 = Integer.parseInt(JOptionPane.showInputDialog("Enter x2:"));
y2 = Integer.parseInt(JOptionPane.showInputDialog("Enter y2:"));
repaint();
} -
Error:cannot resolve Symbol class"name"
when I have compiled Bean class named SlBean which has primary class named pk, I recevied following error message(I compiled pk class without error) :
cannot resolve symbol
symbol : class pk
location: class SlBean
public pk ejbCreate(Sorry , its not classpath problem. You have to simply import the pk class if its in any package. I am assuming you have packaged your pk class with ejb jar file.
for eg. if your class is
package abc.xyz
public class pk
then in your bean class import
import abc.xyz.pk;
--Ashwani -
Cannot resolve symbol: class OracleDriver
Attempting to compile a servlet on Apache Server using same jdeveloper jdbc libraries:
classes12.jar & nls_charset12.jar
Error message:
$compilejava2.sh ProdJobs
ProdJobs.java:361: cannot resolve symbol
symbol : class OracleDriver
location: package driver
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
Am I missing something else?
JeffreyEnter this code into your program and then put the Oracle jar file that contains the driver in your run-time classpath.
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
catch(ClassNotFoundException cnfe) {
// driver not found
}The effect of this is that the classloader will load the Oracle driver for you then call it's static initiailizer that does a bunch of magic that results in the Java runtime knowing that there's a JDBC driver out there.
It is a little weird - but that's the way it works. -
Cannot resolve symbol: class EJBObject
Using javac I get this compile error on this file Calculator.java
Calculator.java:1: cannot resolve symbol
symbol : class EJBObject
location: package ejb
import javax.ejb.EJBObject;
^
Calculator.java:5: cannot resolve symbol
symbol : class EJBObject
location: interface Calculator
public interface Calculator extends EJBObject {
Source code for Calculator.java
import javax.ejb.EJBObject;
import java.rmi.*;
public interface Calculator extends EJBObject {
public long add (int x, int y) throws RemoteException;
public long subtract (int x, int y) throws RemoteException;This code is from a book, so I will assume its a classpath problem. My
classpath looks like:
"C\QTJava.zip".;%J2EE_HOME%\lib\j2ee.jar;%J2EE_HOME%\lib\locale
Also the following enviorment varibales have been set to:
J2EE_HOME
C:\Development\Java\j2sdkee1.3.1
JAVA_HOME
C:\Development\Java\jdk1.3.1
Path
%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\Program Files\Common Files\Adaptec Shared\System;%JAVA_HOME%\bin;%J2EE_HOME%\bin
I can run j2EE, like "j2EE -verbose" (no problems)
also run cloudscape, like "cloudscape -start" (no problems)
also can run deploytool, like "deploytool" (no problems, & deploy sample ear files from cd book)
Your help is appreicated. -
"cannot find symbol class studentList" error
Hi I get this error
"cannot find symbol class studentList", but this class is at the same file and also it is in the same folder. so what's wrong .. and I checked the spelling it's the same.
I should create an object named myList of type studentList
and second, I call method menu() and pass it myList as actual parameter.
so I called the function menu which is should be in the main too
like this
myList.menu();
and menu method accepts as parameter an object of type studentList. and display the menu for the user to choose..
here is part my program:
public class ListTest
{ public void menu(Student L) // accepts parameter
System.out.println("");
System.out.println("Choose a number between 1 to 4");
System.out.println("1-Print Info of A Student ");
System.out.println("2-Print Info of All Students ");
System.out.println("3-Display grade of A Specific student");
System.out.println("4-Exit");
System.out.println("");
int choice = Stdin.readInteger();
while (choice != 5)
switch (choice) {
case 1:
L.PrintAStudent(int L);
break;
case 2:
L.PrintAll();
break;
case 3:
L.DisplayGPA();
break;
case 3:
System.exit(0);
break;
default:
System.out.println("wrong Number");
System.out.println("Enter a number between 1 to 4 ");
System.out.println("Enter 4 to Exit");
break;
System.out.println("");
System.out.println("Choose a number between 1 to 4");
System.out.println("1-Print Info of A Student ");
System.out.println("2-Print Info of All Students ");
System.out.println("3-Display grade of A Specific student");
System.out.println("4-Exit");
System.out.println("");
choice = Stdin.readInteger();
}// end method menu
public static void main(String args[ ])
{ studentList myList = new studentList();//myList object is created
myList.menu();
}//end main
}// end of class ListTest
you have mentioned about the class "studentList" but that class is not to be found in the code you have pasted. its instead "ListTest". And the "menu" function seems to b a part of "ListTest" class. Can you provide the structure of the classes "studentList" and "Student" so that the problem can be more clearly understood?
also you are using the variable "Stdin" in the line int choice = Stdin.readInteger(); where as you have not declared this variable.
in the "switch" statement you are calling two different functions for the same case "3" where as it should be "case 3" and "case 4" respectively.
in the "main" you are calling the "menu" function without any parameter while you actually want to pass argument of type "studentList". -
Cannot resolve symbol - class FileInputStream
I am getting the above error when I compile this following method; I get it in the first line of code.
Anyone know why?
private String readAndProcessData(FileInputStream stream)
InputStreamReader iStrReader = new InputStreamReader(stream);
BufferedReader reader = new BufferedReader(iStrReader);
try
output.setText("");
String data=reader.readLine();
while (data!= null){
output.append(data + "\n");
data=reader.readLine();}
catch(IOException e)
messageBox("Error in file input:\n" + e.toString());
[code/]I am already doing this in another class which is linked to this one.
I have three classes and java.io is imported in the Inteface, and this method is in the model class. -
Cannot resolve symbol: class NamespaceContext
I get the following error when I compile
import javax.xml.namespace.NamespaceContext;
I have added jar files come with jwsdp-1.3It's a bit old, but for the records:
The NamespaceContext class is in the jaxp-api.jar which is located here: jwsdp-1.6\jaxp\lib
As the time of this writing, 1.6 is the current version ;) -
Cannot resolve symbol : class InputStream
I had and environment in which this code compiled. Then I installed Java Communications API. After fooling around to get that to work, I find that I get this error when compiling. What did I do to cause this? what jar file might be missing?
InputStream is in java.io.
If you deleted a jar file in your jre/bin/lib folder there
would problably be a lot more errors then this.The possible
files are jce.jar,jsse.jar,jaws.jar,rt.jar,or sunrsasign.jar.
Although i'm not certain this is correct.If one of those files
are missing that's your problem, if not,I don't know sorry. -
Cannot reslove symbol class Date
I am trying to get a clock to show the time in my program. However, when I try to compile the program a "cannot resolve symbol class Date" error appears. I can't figure out where the problem in my program is. Here is my source code. I would appreciate any help.
import javax.swing.*;
import java.io.*;
import java.lang.*;
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
//import java.util.*;
import java.math.*;
public class store
public static void main(String[] args)
String dataInput;
dataInput = JOptionPane.showInputDialog(null, "Input item data: ");
JOptionPane.showMessageDialog(null, "" + dataInput);
EasyReader console = new EasyReader();
int i, j, k, inum, icom, min, nswaps; inum = 0; boolean swap = false;
double num[] = new double[100]; double dsum, T;
do
System.out.println(); System.out.println("Command Menu"); System.out.println();
System.out.println("1 = Display the data");
System.out.println("2 = Bubble Sort the numbers");
System.out.println("3 = Selection Sort the numbers");
System.out.println("4 = Insertion Sort the numbers");
System.out.println("5 = Binary Search for a number");
System.out.println("0 = Exit the program"); System.out.println();
System.out.print("Enter Command - ");
icom = console.readInt(); System.out.println();
switch (icom)
case 1: // Display the data
Display(inum, num);
break;
case 2: // Bubble sort
nswaps = 0;
for (i = 0; i < (inum-1); i++ )
for (j = (i+1); j < inum; j++)
if (num[i] > num[j])
T = num;
num[i] = num[j];
num[j] = T;
nswaps++;
System.out.println("The number of swaps was - " + nswaps);
Display(inum, num);
break;
case 3: // Selection sort
nswaps = 0;
for (i = 0; i < inum - 1; i++) {
min = i; swap = false;
for (j = i + 1; j < inum; j++)
if (num[j] < num[min]) { min = j; swap = true; }
if (swap) {T = num[min];
num[min] = num[i];
num[i] = T;
nswaps++;}
System.out.println("The number of swaps was - " + nswaps);
Display(inum, num);
break;
case 4: // Selection sort
nswaps = 0;
for (i = 1; i < inum; i++)
j = i; T = num[i];
while ((j > 0) && (T < num[j-1]))
num[j] = num[j-1]; j--; nswaps++;
num[j] = T; nswaps++;
System.out.println("The number of swaps was - " + nswaps);
Display(inum, num);
break;
case 5: // Binary Search
System.out.println("Your numbers will be sorted first");
System.out.println();
for (i = 1; i < inum; i++)
j = i; T = num[i];
while ((j > 0) && (T < num[j-1]))
num[j] = num[j-1]; j--;
num[j] = T;
System.out.print("Enter the number to locate - ");
T = console.readDouble(); nswaps = 0; System.out.println();
int left = 0, right = inum, middle; k = -1;
while (left <= right)
middle = (left + right) / 2;
if (T > num[middle]) {left = middle + 1; nswaps++;}
else if (T < num[middle]) {right = middle - 1; nswaps++;}
else { k = middle; break; }
if (k == -1) System.out.println("Your number was not located in the array");
else System.out.println("Your number " + T + " is in position " + (k+1));
System.out.println();
System.out.println(nswaps + " comparisons were needed to search for your number");
Display(inum, num);
break;
} while (icom != 0);
public static void Display(int inum, double num[])
{ int k;
System.out.println();
System.out.println("");
System.out.println();
for (k = 0; k < inum; k++)
System.out.println((k+1) + " - " + num[k]);
return;
class Clock extends Thread
//A Canvas that will display the current time on the calculator
Canvas Time;
//A Date object that will access the current time
private Date now;
//A string to hold the current time
private String currentTime;
//The constructor for Clock, accepting a Label as an argument
public Clock(Canvas _Time)
Time = Time; //Time is passed by reference, so Time
//now refers to the same Canvas
start(); //start this thread
//The overriden run method of this thread
public void run()
//while this thread exists
while (true)
try
draw_clock(); //calls the draw_clock method
sleep(1000); //puts this thread to sleep for one
//second
//catches an InterruptedException that the sleep() method might throw
catch (InterruptedException e) { suspend(); }
//catches a NullPointerException and suspends the thread if one occurs
catch (NullPointerException e) { suspend(); }
//A method to draw the current time onto the Time Canvas on the applet
public void draw_clock()
try
//Obtains the Graphics object from the Canvas Time so that it can
//be manipulated directly
Graphics g = Time.getGraphics();
g.setColor(Color.gray); //sets the color of the Graphics object
//to gray for the rectangle background
g.fillRect(0,0,165,25); //fills the Canvas area with a rectangle
//starting at 0,0 coordinates of the Canvas
//and extending to the length and width
g.setColor(Color.orange); //sets the color of the Graphics object
//to orange for the text color
get_the_time(); //calls the get_the_time() method
//calls the drawString method of the Graphics object g, which will
//draw a string to the screen
//Accepts a string and two integers to represent the coordinates
g.drawString("Current Time - " + currentTime, 0, 17);
//catches a NullPointerException and suspends the thread if one occurs
catch (NullPointerException e) { suspend(); }
//A method to obtain the current time, accurate to the second
public void get_the_time()
//creates a new Date object for "now" every time this is called
now = new Date( );
//integers to hold the hours, minutes and seconds of the current time
int a = now.getHours();
int b = now.getMinutes();
int c = now.getSeconds();
if (a == 0) a = 12; //if hours are zero, set them to twelve
if (a > 12) a = a -12; //if hours are greater than twelve, make a
//conversion to civilian time, as opposed to
//24-hour time
if ( a < 10) //if hours are less than 10
//sets the currentTime string to 0, appends a's value and a
//colon
currentTime = "0" + a + ":" ;
else
//otherwise set currentTime string to "a", append a colon
currentTime = a +":";
if (b < 10) //if minutes are less than ten
//append a zero to string currentTime, then append "b" and a colon
currentTime = currentTime + "0" + b + ":" ;
else
//otherwise append "b" and a colon to currentTime string
currentTime = currentTime + b + ":" ;
if (c < 10) //if seconds are less than ten
//append a zero to string currentTime, then append "c" and a colon
currentTime = currentTime + "0" + c ;
else
//otherwise append "c" to currentTime string
currentTime = currentTime + c;
} //end of the Clock classWow.
1) Please in future use the code tags to format code you post so that it doesn't think you have italics in your code and render it largely1 unreadable. Read this
http://forum.java.sun.com/help.jspa?sec=formatting
2) You commented out the import of java.util which is the problem you are complaining about.
3) Are you planning to stick all the code you ever write into the one source file? Why is all this stuff rammed together. Yoinks. -
I am having a problem with the following code in InheritanceDemo.java.
public void paint(Graphics g)
numShapes = shapeList.size();
for (int i = 0;i < numShapes; i++)
Shape s = (Shape)shapeList.get(i);
s.draw(g);
It is giving me errors on s.draw(g). It's pointing to the period after the s and says "cannot resolve symbol", Class Shape.
My Shape.java looks like the following:
import java.awt.*;
abstract class Shape {
abstract void paint(Graphics g);
Can anyone tell me what I've done incorrectly?Okay, I think I understand. You're importing java.awt.*, so when you say Shape it thinks you mean java.awt.Shape.
(Solution 1) Change the classname Shape to one which doesn't already exist in the Java class library.
(Solution 2) Only import the classes you need, not *.
(Solution 3) Add an explicit "import Shape;" below the rest of the import statements to override
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