public class Test {

    public static void main(String args[]){
        System.out.println("This is a Test class");
    }
}

C:UsersHPDesktopJAVA Code>javac Test.java
Test.java:1: error: error while writing Test: Test.class (Le fichier spÚcifiÚ est introuvable)
public class Test {
       ^
1 error