Problem with hello world.

Code:

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class HelloWorldApp {
    public static void main(String[] args) {
        System.out.println("Hello World!"); // Display the string.
    }
}

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When I try to type java helloworldapp.class i get this error Error: Could not find or load main class.

When using command line to compile/run Java source code, it must be done as so.

Code:

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javac (FILENAME).java
java (FILENAME)

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You don't need to type .class after you call the java command.

Lesson: The "Hello World!" Application (The Java™ Tutorials > Getting Started)
Lesson: Common Problems (and Their Solutions) (The Java™ Tutorials > Getting Started)

db

I did so that all *. Class files to run with java but still i get this error.

you aren't compiling or running the class file. You're compiling then running a java file.

I know .

Now I have another problem - the command java works but other javac command does not work.

when using javac, you must do it as *.java. so as another example, I would compile my employee system like this.

Code:

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javac Employee.java
java Employee

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