Out of nowhere when I run my application no GUI pops up only says BUILD SUCCESSFUL (total time: 1 second) in the console, don't know why it happened or if anyone has had this before? Tried restarting netbeans etc ill post my code below incase its that. And it was working at one point.
pastebin(dot)com/XvD30sCP code is here
public static void main(String args[]) {
global_crime gc = new global_crime();
gc.setVisible(true);
}
Add this... it will work now..
Related
For some reason I do not have any ability to run the below code in IntelliJ. Neither the Run button or any key shortcuts will work.
I'm relatively new to this but I believe the below code should work, I have declared the public Elevator class and variables in another class file in the project.
public static void main(String args []){
Elevator myElevator = new Elevator();
myElevator.openDoor();
myElevator.closeDoor();
myElevator.goDown();
myElevator.goUp();
myElevator.goUp();
myElevator.goUp();
}
Ive even had a colleague look at this and he's stumped. Is this simply some issue with the way my project is set up?
Apologies if I'm just being thick and can't see it.
Here is the code that's expected to produce error:
public class App {
public static void main (String[] args) {
tick();
}
public static void tick () {
System.out.print("hi");
Note that the closing angled bracket of both, the method tick() and class App is missing. Although the IDE indicates this error while writing code, this compiles and runs just fine. It doesn't look like an issue with Java (or my OS) as doing javac in the command line surely does fail.
What's even funnier...the following code throws a Runtime exception after successfully executing tick():
public class App {
public static void main (String[] args) {
tick();
public static void tick () {
System.out.print("hello..");
Here I skipped closing bracket of main too.
I have installed the development version of Netbeans that has support for Java 9.
[This is a comment more than an answer, but I wanted to include screen shots to show that I cannot reproduce either issue.]
An interesting problem. I just downloaded the most recent nightly build (NetBeans Dev 201803060002) and built your code using Oracle JDK 9.04.
Neither of your code examples would compile for me. For the first example the error for the final line was "reached end of file while parsing System.out.print("hi");". Here is a screen shot:
For the second example, where you removed the closing bracker of main() the additional error reported was "illegal start of expression public static void tick () {":
I suggest that you try the following:
Create a new project and new class "App2" to see if you can replicate the issue with that same version of NetBeans.
If you cannot then review why App compiles and App2 does not.
If you can replicate the problem then download the most recently nightly build to see if you can still replicate the problem (i.e. Invalid source code compiles cleanly). If you cannot then I don't think it is worth raising a bug report or spending further time on the matter.
However, if you can replicate the problem then by all means raise a bug report. But I strongly recommend being able to replicate the failure before doing that. Otherwise you are likely to get a WORKSFORME response if the NetBeans team cannot replicate the issue.
One more thing: it would be helpful to update your OP with the stack trace for that RuntimeException, which you should also include in your bug report.
Ah...I see it now. At some point of time I checked the "Always run without asking" checkbox and since then my IDE is ignoring all the compile time errors without any warnings.
Sorry guys...my bad.
After programming on Mac for a while I tried to program on windows for a change. I started to program but soon realised, what ever I put, the result will not show. I tried the most basic code on netbeans which is,
public class NewClass {
public static void main(String[] args) {
System.out.println("Hello");
}
}
On my Macbook it would give me "Hello" but on my Windows it would give me,
"run: BUILD SUCCESSFUL (total time: 0 seconds)" with no Hello what
soever...
Eclipse give error when I try to compile and run to JAVA codes. The error is
"The selection cannot be launched, and there are no recent launches".
How to fix this issue ??
your code is wrong. you need a main method to launch your program
package main;
public class main {
public static void main (String[] args) {
System.out.println("Test");
}
}
Note: The name of the class always has to be the name of the file, and typically java classes start with an uppercase letter
I think you should run main first and describe your problem in more detail if you still have a problem.
Q: When I try to run my project by clicking the green "Play" button, I get an error of, "The Selection cannot be launched, and there are no recent launches."
A: See previous question. You must run your project's "Main" class at least once by using the right-click method described above, before the "Play button" to run a project will work.
http://courses.cs.washington.edu/courses/cse143/15wi/eclipse_tutorial/faq.shtml
I am a beginner studying Java using NetBeans. I created my first class and some simple code:
public class suju {
public static void main(String[] args){
System.out.print("hello word");
}
}
Why don't I see any result when I click run? I am supposed to see hello world but nothing like this is shown.
Only a message BUILD SUCCESSFUL (total time: 0 seconds)
Unfortunately, I can't post images yet to better present the problem I am facing.
Try to right click on the class file on the left panel then choose run option
Mine was doing the same.
I went to java.com and downloaded java again- it then prompted me to uninstall all out-if-date updates.
When I ran it again it was working.