Thread: Where is my .class?

Hi! I've just finished writing a program, and I keep getting an error stating

Shapes.java:308: cannot find symbol
symbol : class ATriangle
location: class Shapes
ATriangle ATriangle = new ATriangle(1.0, 2.0, 5.0);

My program is about superclasses and subclasses, so each new class I make extends the main one (which is AnObject).

ATriangle, the third subclass, isn't working when I create a new one (giving the error shown above) It looks like this:

class ATriangle extends AnObject {
 
double Side1;
double Side2;
double Side3;
 
//No parameter constructor
 
public ATriangle() {
double Side1;
double Side2;
double Side3;
}
 
// 3 parameter constructor
 
public ATriangle(double s1, double s2, double s3) {
Side1 = s1;
Side2 = s2;
Side3 = s3;
}
 
// 5 parameter constructor
 
public ATriangle(double s1, double s2, double s3, String Colour1, String Filled1) {
Side1 = s1;
Side2 = s2;
Side3 = s3;
Colour = Colour1;
Filled = Filled1;
}
 
//Accessor and mutator methods for each attribute
 
public double getSide1() {
return Side1;
}
 
public double getSide2() {
return Side2;
}
 
public double getSide3() {
return Side3;
}
 
public void setSide1(double s1) {
Side1 = s1;
}
 
public void setSide2(double s2) {
Side2 = s2;
}
 
public void setSide3(double s3) {
Side3 = s3;
}
 
//AREA ACCESSOR
 
public double getArea() {
double s = (Side1 + Side2 + Side3) / 2;
double Area = Math.sqrt( s*(s - Side1)*(s - Side2)*(s - Side3) );
return Area;
}
 
public double getPerimeter() {
double Perimeter = Side1 + Side2 + Side3;
return Perimeter;
}
 
//TOSTRING METHOD 
 
public String toString() {
return "\n" + "Side1 : " + Side1 + "\n" + "Side2 : " + Side2 + "\n" + "Side3 : " + Side3;
 
}
 
}

An my main class is:

public class Shapes {
public static void main (String[] args) {
 
//Test AnObject: 
System.out.println("TESTING THE SUPERCLASS (OBJECT) : " + "\n");
AnObject object = new AnObject("Green", "Filled");
System.out.println(object.getColour());
System.out.println(object.getFilled());
object.setColour("Blue");
object.setFilled("Not Filled");
System.out.println(object.toString() + "\n");
 
//Test ACircle
System.out.println("TESTING THE CIRCLE! : " + "\n");
ACircle circle = new ACircle("Yellow", "Not Filled", 4.0);
circle.setRadius(5.0);
System.out.println(circle.getRadius());
System.out.println("Area : " + circle.getArea());
System.out.println("Perimeter : " +circle.getPerimeter());
System.out.println("Diameter : " +circle.getDiameter());
System.out.println(circle.toString() + "\n");
 
//Test ARectangle
System.out.println("TESTING THE RECTANGLE! : " + "\n");
ARectangle rectangle = new ARectangle(5.0, 3.0, "Red", "Filled");
System.out.println("Width : " + rectangle.getWidth());
System.out.println("Length: " + rectangle.getLength());
rectangle.setWidth(10.0);
rectangle.setLength(2.0);
System.out.println("Area : " + rectangle.getArea());
System.out.println("Perimeter: " + rectangle.getPerimeter());
System.out.println(rectangle.toString());
 
//Test ATriangle
System.out.println("TESTING THE ATRIANGLE! : " + "\n");
ATriangle triangle = new ATriangle(1.0, 2.0, 5.0);
 
   }
}

Can anyone see why this isn't working?

--- Update ---

Also, I think it's important to not that both ARectangle and ACircle have ARectangle.class and ACircle.class when I search it under my finder, but ATriangle does not.

I don't see a problem with what you posted. Are all class source files in the same folder?

That's the problem! When I try to look for ATriangle.class, all that comes up is ACircle$ATriangle.class and ARectangle$ATriangle.class, but none are just ATriangle.class ...

I didn't ask about the .class files, but that's an interesting answer nonetheless. Try deleting all of the .class files and recompiling the project.

I did that, and now I'm getting the same problem, except now it happens with ARectangle aswell.

public class ATriangle extends AnObject {
 
double Side1;
double Side2;
double Side3;
 
//No parameter constructor
 
public ATriangle() {
double Side1;
double Side2;
double Side3;
}
 
// 3 parameter constructor
 
public ATriangle(double s1, double s2, double s3) {
Side1 = s1;
Side2 = s2;
Side3 = s3;
}
 
// 5 parameter constructor
 
public ATriangle(double s1, double s2, double s3, String Colour1, String Filled1) {
Side1 = s1;
Side2 = s2;
Side3 = s3;
Colour = Colour1;
Filled = Filled1;
}
 
//Accessor and mutator methods for each attribute
 
public double getSide1() {
return Side1;
}
 
public double getSide2() {
return Side2;
}
 
public double getSide3() {
return Side3;
}
 
public void setSide1(double s1) {
Side1 = s1;
}
 
public void setSide2(double s2) {
Side2 = s2;
}
 
public void setSide3(double s3) {
Side3 = s3;
}
 
//AREA ACCESSOR
 
public double getArea() {
double s = (Side1 + Side2 + Side3) / 2;
double Area = Math.sqrt( s*(s - Side1)*(s - Side2)*(s - Side3) );
return Area;
}
 
public double getPerimeter() {
double Perimeter = Side1 + Side2 + Side3;
return Perimeter;
}
 
//TOSTRING METHOD 
 
public String toString() {
return "\n" + "Side1 : " + Side1 + "\n" + "Side2 : " + Side2 + "\n" + "Side3 : " + Side3;
 
}
 
}

I did this (made the classes public) to everything, and just received the same error...

There's something about the way this project is setup that you're not telling us - not that you're being purposely deceptive, you just don't realize it's important. The results described in post #3 indicate there's more going on here than we know. So let's go back to basics:

Is every class that you've mentioned defined in its own .java source file, properly named, ClassName.java?

Are all .java source files for all of the classes a member of the same package, even default?

Are all .java source files for all of the classes in the same folder?

If the answer is "No" to any of the above, please describe the differences.

All I have is the Shapes.java file, then four others called AnObject.class, ACircle.class, ACircle$ARectangle.class, and ACircle$ATriangle.class on their own.