I have written a class that uses a thread and i am getting wierd error message saying no suitable constructor found for Thread(Tunnel) doesn not like this line, Thread lb = new Thread (tunnel);
import java.lang.*;
public class leftBound implements Runnable {
Tunnel tunnel;
public leftBound(Tunnel tunneler) {
tunnel = tunneler;
Thread lb = new Thread(tunnel);
lb.start();
[Code] .....
works fine if i do this though
import java.lang.*;
public class leftBound implements Runnable {
Tunnel tunnel;
public leftBound(Tunnel tunnel) {
this.tunnel = tunnel;
Thread lb = new Thread(this);
lb.start();
[Code] .....
But how do i get it to compile without using "this" method.
I need to add an additional field (called client). When I try to do this, I get the "no suitable constructor found" error. I don't understand what I am doing wrong or where else to look.
I started learning mysql to connect my program to a database but every time i try to connect I get this error.
java.sql.SQLException: No suitable driver found for dbms:mysql://localhost:3306/apexdemo at java.sql.DriverManager.getConnection(DriverManager.java:596) at java.sql.DriverManager.getConnection(DriverManager.java:215) at JDBCdemo2.main(JDBCdemo2.java:7)
I did the following:
- added the mysql-connector-java-5.1.34 jar to my classpath - added mysql jdbc driver to the project library - double checked the url syntax and spelling errors - checked that the server is running
import java.sql.*; public class JDBCdemo2 { public static void main(String[] args) { Connection conn = null;
So I built this comparator exactly the same way I built my others that are working.But the comparator for UserComparator is not being found for some reason.I will post my usercomparator class and JSP page.
I have small Java code, which execute every day and checks for data in database using Cronj Schedular and everything works fine, but recently I have observed that, it is failing due to
java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:@160.110.xx.xxx:1521/test
At the same time, when I run my test code to check Database connectivity that works fine without above exception. I'm unable to figure it out. Although, there was just slight code change, but that was nowhere related to Database or Database connection.
dbconf.java public class dbconf { private Connection connect; private String connstr; public Connection getConnection() throws SQLException { connstr = "jdbc:oracle:thin:@160.110.xx.xxx:1521/test";
[Code] ....
Application Log file
Wed Jul 01 09:25:17 IST 2015:------- Initializing ------------------- Wed Jul 01 09:25:17 IST 2015:------- Scheduling Jobs ---------------- Wed Jul 01 09:25:17 IST 2015:------- Job Started Running ---------------- Thu Jul 02 06:00:00 IST 2015 : Job Executed..!! Bschedularv2.2 java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:@160.xxx.67.xxx:1521/test Sat Jul 04 06:00:00 IST 2015 : Job Executed..!! Bschedularv2.2 Sun Jul 05 06:00:00 IST 2015 : Job Executed..!! Bschedularv2.2 java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:@160.xxx.67.xxx:1521/test
So, you can see, It failed on 3rd of July and 5th July as well. But, in between it ran fine.
I am receiving two errors that I'm not sure how to fix. The first is illegal start of expression at line
"public void actionPerformed(ActionEvent e)"
and no suitable method found for intersect JButton at line
"if(blocker01.getBounds().intersects(r_wall))" .
import java.awt.*; import javax.swing.*; import java.awt.event.*; public class gamePanel01 extends JPanel implements KeyListener { character ch1 = new character("Hero");
I am working in NetBeans and I am receiving numerous error messages with my code "not suitable constructor for lineItem.
import java.util.ArrayList; public class Transaction { private final ArrayList<LineItem> lineItems; private int customerID; private String customerName; private String LineItem; private int i;
[Code] .....
Specific Requirements for the Transaction Class :
1. The Transaction class should have a constructor with two parameters. The first is an integer containing the customer's ID and the second is a String containing the customer's name.
2. There should be a method to allow the addition of a line item to the transcript. The three parameters for the addLineItem method will be (1) the item name, (2) the quantity, and (3) the single item price.
3. There should be a method to allow the updating of a line item already in the transaction. Notice that updating an item means changing the quantity or price (or both). The parameters for the updateItem method are also (1) the item name, (2) the quantity, and (3) the single item price.
Notice that the updating of a specific line item requires a search through the ArrayList to find the desired item. Anytime a search is done, the possibility exists that the search will be unsuccessful. It is often difficult to decide what action should be taken when such an "exception" occurs. Since exception handling is not covered until later in this textbook, make some arbitrary decisions for this project. If the item to be updated is not found, take the simplest action possible and do nothing. Do not print an error message to the screen. Simply leave the transaction unchanged.
4. The transaction class needs a method called getTotalPrice to return the total price of the transaction.
5. There should also be a method to return information about a specific line item. It should return a single String object in the same format described for the LineItem class:
Colgate Toothpaste qty 2 @ $2.99 $5.98
Again, the possibility exists that the search for a specific line item will fail. In this instance, you should return a string containing a message similar to this:
Colgate Toothpaste not found.
6. The final method needed is a toString method. It should return the transaction information in a single String object. It should use the following format:
I'm currently learning about Swing but I can't get my head round this piece of the code. Here is a simplified gui (not interested in the gui part but the execution)
public class SwingDemo implements ActionListener { SwingDemo(){ JFrame jfrm = new JFrame("Simple gui pro"); //rest of code public static void main(String[] args) { new SwingDemo(); }
I get the above, create a new instance of SwingDemo in the main thread which starts up the gui through the constructor. However, then the tutorial says that I should avoid doing the above but do this instead:
public class SwingDemo implements ActionListener { SwingDemo(){ JFrame jfrm = new JFrame("Simple gui pro"); //rest of code public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { //why do this instead? public void run(){ new SwingDemo(); } }); } }
Reading, it talks about an event-dispatching thread which has completely lost me... Why not just instantiate the object directly instead of creating another thread?
im having an issue with the 3rd thread that are supposed to merge the two sorted sub arrays , i pass the 2 subarrays to my runnable function sortlist and they are renamed IntSortList 1 and 2 and th1.start() and th1.join() are called and it works fine, but then i have another runnable constructor that takes IntSortList 1 and 2 but it does take a runnable. below is the code in my main,
Runnable InSortlist1 = new sortList(data2p1); Runnable InSortlist1 = new sortList(data2p1); Thread th1 = new Thread (IntSortlist1); Thread th2 = new Thread (IntSortlist2); try { th1.start(); th1.join();
import java.util.Scanner; public class Arraykey { public static void main(String[] args) { System.out.println("Enter array size: "); Scanner input = new Scanner(System.in); int size = input.nextInt(); int [] a = new int[size]; for(int i=0 ; i<size ; i++){
Write a program to request a student number and their marks in 4 subjects. The program must print the student number, total marks and average mark. All outputs should be printed with suitable labels
This is the error am getting
Scanner get = new Scanner (System.in) - got a red line
int student number, total marks, average mark - got a yellow bulb with a red exclamation mark on it.
I just dont understand where the errors is where what the system dont have ... I am using netbeans ....
I was practicing my java skills and came across an exercise in which a non parameter constructor calls a two parameter constructor. I tried a few searches online but they all came back unsuccessful. This is the part I am working on:
public PairOfDice(int val1, int val2) { // Constructor. Creates a pair of dice that // are initially showing the values val1 and val2. die1 = val1; // Assign specified values die2 = val2; // to the instance variables. } public PairOfDice() { // Constructor that calls two parameter constructor }
I tried calling the two constructor using the line "this(val1, val2)" but I get an error because val1 and val2 are local variables.
Then I tried to use the same signature: "this(int val1, int val2)" but that didn't work either.
I have a jar file.and i imported its classes to my program..
let say i have a code
source code is at /home/t_bmf/Java/src import firstjar.FirstJarPrint; public class TestJar { public static void main(String[] args) { //FirstJarPrint jar = new FirstJarPrint(); } }
well i have successfully compiled it using command below:
it means that i don't have any compilation error right?so all classes found properly.But whenever I run the program I always got this error:
java -cp /home/t_bmf/Java/lib/FirstJar/jar:. TestJar Exception in thread "main" java.lang.NoClassDefFoundError: firstjar/FirstJarPrint at TestJar.main(TestJar.java:6) Caused by: java.lang.ClassNotFoundException: firstjar.FirstJarPrint at java.net.URLClassLoader$1.run(URLClassLoader.java: 202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.j ava:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:3 06) at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:2 47) ... 1 more
I think it has to be no error since i have compiled the program successfully right?if it really didn't find the class, then it must be a compilation error right?
is there something wrong with the way I execute the program?
I am trying to create executable jar file and I have test.mf file located in the dir from where jar cmd(JavaTest) is executed and also in dir which contains class files (jTest).
C:Users m2tDesktopJavaTest>jar cvfm JarTest4.jar test.mf jTest java.io.FileNotFoundException: test.mf (The system cannot find the file specified) at java.io.FileInputStream.open(Native Method) at java.io.FileInputStream.<init>(FileInputStream.java:120) at java.io.FileInputStream.<init>(FileInputStream.java:79) at sun.tools.jar.Main.run(Main.java:150)
[Code] .....
So how can Icreate manifest file and where shall I put it ?
I am trying to run a project and i am getting different errors, I know the code is working because i have seen it running, but now i cant even get the app to load up. sometime I get a AndroidManifest cannot be found error and sometimes i get a error like
Exception in thread "main" java.lang.NoClassDefFoundError: javax/mail/Session at SendEmail3.main(SendEmail3.java:15) Caused by: java.lang.ClassNotFoundException: javax.mail.Session at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 1 more
I am creating a body mass index calculator and i was wondering how i could make its so that the program resets itself once the BMI has been found....
My code is below...
package bmiCalculatorSource; import java.util.Scanner; public class BMICalculator { public static void main(String[] args) { final double KilogramsPerPound = 0.453; final double MetersPerInch = 0.026;
I try to run this query select distinct TRIM(company) from catalog where company != '' order by company asc; and i get an SQL exception that Column company not found.. When i run this query in MySql workbench it works fine?
Write an application that reads the quantity for each product until user has completed their order. Your program should use switch, if, for, while and do while statements to read, calculate and display the total retail value of all pro ducts sold for each user transaction. The user should be able to start a new transaction after the first transaction is completed. The user can make no more than 3 total orders
public class Merchandise { private int bootsQTY; private int wranglersQTY; private int hatsQTY; private int chapsQTY;
[Code] ....
When I run my program all of my quantities and the total are 0, I have been stuck for a while trying to figure out how to get values assigned to them...
