Runtime Error In Package Program

Jan 20, 2015

Iam getting this error at run time while using this command "java mypack.Accountbalance". I have compiled this source code and got its class file that I have put in mypack package but now its showing this error ..

Here's the code :
package mypack;
class Balance
{
String name;
double bal;
Balance(String n ,double b)

[Code] .....

Error:
exception in thread "main" java.lang.NoClassDefFoundError: mypack/Ba
at mypack.Accountbalance.main(Accountbalance.java:25)
used by: java.lang.ClassNotFoundException: mypack.Balance

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Getting Package Not Found Error While Calling A Java Program

Jan 9, 2014

I have written a sample java program, in which I have imported a package com.ibm.mq.

While compilation in as400 machine,I am getting an error like package com.ibm.mq not found.

I have set classpath and also run a hello world program.

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Program Outputting Null Into Validation Statement - Runtime Error

Oct 17, 2014

I am Having trouble with my program to validate. It is outputting null into the validation statement then it brings back a run-time error to that validation Statement for the String.

public String validateData ()
{
if (nm == null)nm = "Error! Must enter at least one character";
else nm = name;
return name;
}//end validation method

Why is this happening, and then once that is completed, why is the validation Sentence in tests Scores not able to validate. I traced it back to out put "Error, a number between 1<100".

public void validateTests ()
{
String testschange;
if (test1 < 0 || test1 > 100) {
testschange = " You have entered an invalid number, between 1-100. Please restart!";
testschange = Integer.toString( test1 ) ;

[Code] .....

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Jan 25, 2014

I am trying to make a jar file in intelliJ. My directory that holds all the java classes is C:rafficProjectsrccege. In cege there is a package ui where there is a class GuiMain. And I have imported the GuiMain() in my Main() class.

I have this code lines:

package cege;
import cege.ui.GuiMain;

and when I use the terminal in the intelliJ and write the command:

C: rafficProjectsrccege>javac *.java

I get this message:

Main.java:3: error: package cege.ui does not exist

import cege.ui.GuiMain;

but actually, I have already put this line in my code. what could be the problem?

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Feb 9, 2015

why get a runtime error when choosing option 2 after adding a contact?

Main:

package contactlist;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

[code]....

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Oct 14, 2014

I am having some issues with this code its a a DB generator that creates tables and populates them. There seems to be no compiler errors, but there is a runtime error. I have added the error and the code below :

Runtime error:

Exception in thread "main" java.sql.SQLException: [Microsoft][ODBC Driver Manager]
Data source name not found and no default driver specified
at sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc.java:6964)

[Code] .....

My Code:

MakeDB.java
import java.sql.*;
import java.io.*;
public class MakeDB {
public static void main(String[]args) throws Exception {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

[Code] .....

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May 5, 2014

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Jul 8, 2014

While executing my application i came across with this unexpected error which i don't know why?

#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000007fdcacd79a9, pid=4980, tid=7724
#
# JRE version: Java(TM) SE Runtime Environment (7.0_45-b18) (build 1.7.0_45-b18)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (24.45-b08 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# C [ntdll.dll+0x79a9]
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# If you would like to submit a bug report, please visit: [URL} .....
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

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Nov 16, 2014

For this program, I have to run a slot machine. It runs until right before the do while loop and then I receive the error: Exception in thread "main" java.util.InputMismatch.Exception. Searching around, someone said it was a scanner error and adding a call keyboard.nextLine(); fixes the problem- however with that I receive the same error.

Code :
import java.util.Scanner;
import java.util.Random;
import java.io.*;
public class SlotMachineSimulation
{
public static void main(String[] args) throws IOException
{
int number;

[Code] .....

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Aug 2, 2014

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Jun 30, 2014

I have installed and tested j2se jdk8 u5 on my Windows 7 64 bit laptop and successfully tested in Eclipse with a quick Hello World.

JAVA_HOME = C:Program FilesJavajdk1.6.0_25

When I try to install j2ee jdk7 sdk7 I get

Error: Could not find the required version of the Java(TM) 2 Runtime Environment in '(null)'

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Apr 30, 2014

My working directory is e:ajava. in package p1 i create two classes c1 and c2. net beans creates three files e:ajavap1srcp1, e:ajavap1srcc1, e:ajavap1srcc2. package runs without a hitch. i create another package p2 under e:ajava. i want to use class c1 in p2. pray what on earth should be my import statement in the p2 source code after the first statement 'package p2'. another related querry what should i include in my class path so as to gain access to c1 and c2 in source code of p2.

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Feb 11, 2014

i have a program in UNIX directory /home/me/java/src

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public static void main(String[] args) {
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}
}

I have manage to compile it successfully(class file will be in bin directory) using command below: javac -d /home/t_bmf/java/bin HelloWorld.java

My problem now is how would I execute the class in bin directory in UNIX? I already tried different ways on how to execute it as suggested in my internet research The one I tried is this:

java $CLASSPATH:.:bin/HelloWorld
but I got this error message:
Exception in thread "main" java.lang.NoClassDefFoundError: :/:bin/HelloWorld
Caused by: java.lang.ClassNotFoundException: :.:bin.HelloWorld

[code]....

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Apr 4, 2014

The first 4 class below are the main classes while the last class is the testing class. I got it all to compile but for whatever reason there are several runtime errors. I have spent hours trying to figure out what they are, but I was only able to eliminate a few.

import java.util.*;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Set;
import java.lang.*;

public class PhoneNetwork {

[Code] .....

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Let's say hypothetically you're making a huge program and use a lot of imports (ex import java.util). If you only need a few specific things from java.util, will it use more memory importing java.util.* compared to only importing lets say java.util.Scanner, java.util.ArrayList, etc. Basically does importing a whole package use more (if any at all) memory than only importing specific package parts?

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Here is the code

public class PaintProject extends Applet {
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int yCoord[];
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[Code] .....

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Apr 25, 2014

Ok, so the program we are supposed to do is to create implement a employee class then create a main tester class that can accept user inputs for 5 employee names, salaries, and performance rating. After that, we have to input code to calculate a provided raise amount, then print out the array with the updated raises. I have completed the program with no syntax errors, but it doesn't do anything. not even a screen comes up on my end to accept user inputs. I know its something basic, but what am i missing

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[Code] ....

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1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
.
.
.
79. . . . . . . . . .91

here is code and error file

eror of for: E:Javajdkbin>javac tri.java tri.java:16: error: reached end of file while parsing } ^ 1 error code of above error:

Java Code:

class tri
{
public static void main (String args[]) {
int i,j,a=0; for(i=1;i<=79;i++) {
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Error occurred during initialization of VM
java.lang.OutOfMemoryError: unable to create new native thread

Java Code:

import static java.lang.System.*;
import java.applet.Applet;
import java.util.Scanner;
import java.io.*;
import java.util.Random;
import java.util.Date;

[Code] .....

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Jan 3, 2015

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Sep 3, 2014

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Sep 5, 2014

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Here's the code:

import java.io.*;
public class StringMirror
{public static void main (String [] args) throws IOException
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String enteredWord = "";
int lengthOfTheWord = 0;
int lengthOfTheWordMinusOneVersion = 0;

[code]....

It is working, but the problem is that after the output, there's this error that says String index out of range: -1.

the program is working but I kind of wanted it to have no errors in the end.

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Apr 7, 2015

I am trying to create a Hangman program using Arrays. When trying to compile my code I get the following error: 50: error: no suitable method found

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method StringBuffer.setCharAt(int,char) is not applicable
method AbstractStringBuilder.setCharAt(int,char) is not applicable

Here's the code:

import java.util.*;
import java.io.*;
public class hangman {
public static void main() throws IOException {
Scanner kb = new Scanner(System.in);
String filename;

[code]....

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Mar 21, 2015

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at home.Main.main(Main.java:14)"

Here is the code! :

Main.java class
Java Code: import java.util.Scanner;
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[code]....

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Apr 25, 2014

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And I need it to format similarly for 16 bits and 32 bits as well. Here's the display function for the list of binary position numbers:

public void displayList() {
System.out.print("Binary Positions: ");
for (int i = (posNums.size() - 1); i >= 0; i--) {
System.out.print(posNums.get(i) + " ");
}
}

Here are the display functions for the rows (separated them so that there wasn't so much code in one function):

public void displayTable() {
// Print the Binary Position Values
displayBinPositions();
// Print decimal bit positions
displayDecPositions();

[Code] ....

The print3rdRow and print4thRow are booleans to determine whether an error has been generated yet (user chooses from menu to create an error and the program picks a random bit to change and the erroneous data is put in the 3rd row and it's check bits are put in the 4th row). I tried doing spaces but it just wouldn't come out like I wanted.

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