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I then typed in: javac hello. I used cd to browse to the directory my hello.java file was in. Could not find or load main class HelloApp). Ask Question Asked 7 years, 3 months ago. I attempted to do it manually with the cmd prompt. Error: Could not find or load main class when running in TextPad. you will get a runtime error Could not find or load main class xxx or. Then you need to execute it using the java command (JVM) as − java Example Error: could not find or load main class hello press any key to continue. If you cannot find these commands in the Tools menu, goto Configure. class file (byte code) is created with the specified name. For example, youll get this error if you try to run your program with java HelloWorldApp. class file that was created by the compiler. A common mistake made by beginner programmers is to try and run the java launcher on the. If your program gets compiled without errors, a. Could not find or load main class HelloWorldApp.class. SYMPTOM: Can compile but cannot run the Hello-world program (e.g., "java Hello" does not work!)ĮRROR MESSAGE (Post JDK 1.7): Error: Main method not found in class Hello.When write a Java program/class first of all you need to compile it using the javac command as − javac. Read " Java Applications and Environment Variable" for more discussion on CLASSPATH. You can include the current directory (denoted by a single dot ".") in front of the However, if CLASSPATH is set, the current directory is NOT implicitly included. ⇒ Delete (Delete from both the System variables and User variables)ģ) (For Advanced Users Only) If CLASSPATH is not set, it is defaulted to the current directory. ⇒ System variables (and also User variables) Example.java D:\>java samp.Example Error: Could not find or load main class samp.Example Caused by: : samp.Example Solution In this scenario we have mention the name of the wrong package While executing we need to specify the correct package name in which the. Otherwise, if the CLASSPATH is defined, for beginner, I suggest that you remove Your program is correct, I can't help you here. If you receive the message "Environment variable CLASSPATH not defined" and You need to compile the source program (".java") to get the class file (".class").Ģ) If the Java class is present in the current directory, issue a "set classpath" command SYMPTOM: Can compile but cannot run Java program from the CMD shell (e.g., "java Hello" does not work!)ĮRROR MESSAGE (Post JDK 1.7): Error: Could not find or load main class Xxx ERROR MESSAGE (Pre JDK 1.7) : Exception in thread "main" : Xxx PROBABLE CAUSES:ġ) The Java class (in this example, Hello.class) is NOT in the current directory.Ģ) The CLASSPATH environment variable is set, but does not include the current directory ".".ġ) Issue a "dir" command to list the contents of the current directory.Ĭheck that it contains the Java class to be run (e.g., Hello.class). Otherwise, include JDK's bin directory in the PATH environment variable. In "c:\program files\java\jdk-11.0.1", then PATH should include "c:\program files\java\jdk-11.0.1\bin".
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![could not find or load main class textpad 8 could not find or load main class textpad 8](https://i.stack.imgur.com/KGr4H.png)
For example, suppose that your JDK is installed Just a little puzzled here - would appreciate any insight into the problem. So the JVM has no excuse to not find the jar file. Programs (including "javac.exe"), does not include JDK's bin directory.ġ) Start a CMD shell (click "Start" button ⇒ "run." ⇒ enter "cmd") and issue a path command:Ģ) Check if it includes your JDK's "bin" directory. Could Not Find or Load Main Class in Java with java tutorial, features, history, variables, object, programs, operators, oops concept, array, string, map. I have the path to the version 8 connector in my environmental variables (removed the path for the version 5.1.46, of course) - rebooted several times and checked that echo PATH had the path there. PROBABLE CAUSES: The PATH environment variable, which maintains a list of search paths for executable
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SYMPTOM: Cannot compile Java program from the CMD shell (e.g., "javac Hello.java" does not work!)ĮRROR MESSAGE: 'javac' is not recognized as an internal or external command, operable program or batch file.