java - Idea error-Could not find or load main class

Thursday, 8 February 2018

I was just running the basic helloworld program, as follows:

public class test {


public static void main(String[] args) {
    System.out.println("Hello, World");
  }
}

After I typed "javac src\test.java" to compile it, and it compiled successfully, then I typed "java src\test", and it showed

">"C:\Program Files\Java\jdk1.8.0_65\bin\java.exe" src\test

Error: Could not find or load main class src\test".

So I set my path to

 ".;%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin" and classpath to 
 ".;%JAVA_HOME%\lib;%JAVA_HOME%\lib\tools.jar" so I think there's nothing wrong here..

And I don't know what's going on here... Any advice would be appreciated.

Answer

Run

java -cp src test

-cp src tells Java to look in the src folder for classes. test is the name of the class to run.

Note that the java command takes a class name, not a file name.

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