I'm new to Java and intellij
I'm not sure why java can't find main, have anyone seen this before?
PS C:\Users\lihih\Documents\studying\AI\MMNS\mmn18\HW3_Skeleton> java HW3 0 tune1.txt test1.txt
Error: Could not find or load main class HW3
Caused by: java.lang.ClassNotFoundException: HW3
PS C:\Users\lihih\Documents\studying\AI\MMNS\mmn18\HW3_Skeleton>
answer: i found i wasn't in the right path and it worked :)
Related
Error: Could not find or load main class
Caused by: java.lang.ClassNotFoundException:
this is happening in intellij for spring boot project.
i have tried to change project settings too.
using java 11
Whenever i try to execute a .jar file containing my code, it throws NoClassDefFoundError: kotlin/io/ConsoleKt. So far i haven't found a solution to this problem but I think the problem has something to do with the readLine() function I have in the script but I don't know what. The weird thing is that my code ran perfectly in Intellij itself but once I built it started throwing this exception that never happened outside of IntelliJ. The specific error is:
Exception in thread "main" java.lang.NoClassDefFoundError: kotlin/io/ConsoleKt
at com.quantumzizo.calcualtorkotlin.DisplayKt.main(Display.kt:23)
at com.quantumzizo.calcualtorkotlin.DisplayKt.main(Display.kt)
Caused by: java.lang.ClassNotFoundException: kotlin.io.ConsoleKt
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
... 2 more
Is there solution that can solve this?
So it turns out all I had to do was build a fat jar with all the dependencies. I used the Gradle plugin Shadow to make a fat jar.
Props to #Endzeit for suggesting that I use it.
I am learning Java from the Oracle documentation page: https://docs.oracle.com/javase/tutorial/reallybigindex.html
I am using Intellij on Linux Mint and I had no problems until I got to JApplets. Whenever I am trying to run my code now I get the following error:
Error: Could not find or load main class sun.applet.AppletViewer
Caused by: java.lang.ClassNotFoundException: sun.applet.AppletViewer
Can someone point me in the right direction?
I would like to run TestNG Suite from command line on Linux. I'm using eclipse to run test, but I have problem with command line. I know that I need to have testng.jar and I have it in /home/karcio/dev/testng-6.4.jar, location my suite xml is /home/karcio/git/java-test-automation/Automation/test-output/Default suite/TestSuite.xml . Commands what I tried,
set classpath /home/karcio/dev/testng-6.4.jar
cd /location to my suite xml file: java org.testing.TestNG TestSuite.xml
This is error what I see:
Exception in thread "main" java.lang.NoClassDefFoundError: org/testing/TestNG
Caused by: java.lang.ClassNotFoundException: org.testing.TestNG
I'm new in those path and classpath, I'm little bit confusing :(
Thank you
Little update,
I think I did all good, now when I put to terminal: java org.testng.TestNG Test.xml
I've got this error:
Exception in thread "main" org.testng.TestNGException: No sourcedir
was specified at org.testng.TestNG.checkConditions(TestNG.java:1170)
at org.testng.TestNG.privateMain(TestNG.java:1010) at
org.testng.TestNG.main(TestNG.java:997)
all path are exported, so maybe this is wrong version of testng.jar, tried with versions 5.5, 6.4, 6.5, 6.6, 6.7 but I think only version 5.5 is working,
There is a typo in the class package
org.testing.TestNG
should be
org.testng.TestNG
(There no i in the .testng. part)
http://testng.org/javadoc/org/testng/TestNG.html
My code is compiled on OSX and it works fine(compiler version 1.6). But when I copy it to a remote ubuntu. I can not run it.
When I run
java TPCC.class
I got exception like this.(By the way TPCC.class is in default package)
Exception in thread "main" java.lang.NoClassDefFoundError: TPCC/class
Caused by: java.lang.ClassNotFoundException: TPCC.class
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Could not find the main class: TPCC.class. Program will exit.
And my java version on ubuntu:
java version "1.6.0_21"
Java(TM) SE Runtime Environment (build 1.6.0_21-b06)
Java HotSpot(TM) Client VM (build 17.0-b16, mixed mode, sharing)
It's also 1.6 and I think it fits the compiled binary. How can I fix this problem?
The problem is in the way you run the program. Compiled java called
ClassName.java
will be ClassName.class. You should run it like
"java ClassName"
. You shouldn't run it as
"java ClassName.class"
What happens here is this. When you run it as java ClassName.class, JVM try to look for ClassName called "class" in the package called "ClassName" that does not exist. So it will throw NoClassDefFoundError.
This is an invocation problem as the error shows: java should be used and not the filename of the class.
The error message tries to say you this by stating that "TPCC/class" is not found.
(sorry for first adding comment, used the wrong field)
Specify the classpath when invoking java:
java -cp <path-to-jar> TPCC