Question

// my first class
public class FirstProject{
int first_number;

public FirstProject(){
    first_number = 0;
}
public FirstProject(int Fn){
    first_number = Fn;
}
public void Print(){
    System.out.println("First number = " + first_number); System.out.println();
}

}

//second class in a separate file
// keep getting an error on this class saying that cannot find the . in p1.print();

public class TestProgram {
public static void main(String[] args){

    FirstProject p1 = new FirstProject(10); 

    p1.print(); System.out.println();



}

Answer 1

Java is case-sensitive:

p1.Print();

But better change

public void Print(){ -> public void print(){

Since methods should not start with a capital letter, according to conventions.