windows - Error java exectuing -

windows - Error java exectuing -

im trying execute simple java code (i have compiled no problems) gives me next error:

c:\users\alejandro\desktop> java helloworld.java error: couldn't find or load main class.

the code next:

public class helloworld{ public static void main(string[] args){ system.out.println("hello world!"); } }

-i have set path variable correctly. -i have deleted classpath variable. -i have both files (.java , .class) in desktop.

you're specifying name of source file. that's not provide java command - specify class name.

java helloworld

this assumes helloworld.class somewhere on classpath, default "the current directory".

if had package, e.g.

package foo; public class helloworld { ... }

then want set helloworld.java in directory called foo, , compile , run root directory:

> javac foo\helloworld.java > java foo.helloworld

note how fully-qualified class name foo.helloworld, not foo\helloworld.

java windows