How validate input against abstract class?

[FadedAura]

I have 5 pipe types, and want to check user input with each abstract type. The user input will be via a GUI.

My current pipe code:

public abstract class Pipe {

    protected boolean InnerInsulation, OuterReinforcement;
    protected int Colour;
    protected int[] Grades;
    
    public validateOrder(){
        
        
    }
}

public class Type1 extends Pipe {
    
    public Type1() {
        
        this.InnerInsulation = false;
        this.OuterReinforcement = false;
        this.Colour = 2;
        this.Grades = new int[]{1, 2, 3};
    }    
}

public class Type2 extends Pipe {

    public Type2() {

        this.InnerInsulation = false;
        this.OuterReinforcement = false;
        this.Colour = 1;
        this.Grades = new int[]{2, 3, 4};
    }
}

public class Type3 extends Pipe {

    public Type3() {

        this.InnerInsulation = false;
        this.OuterReinforcement = false;
        this.Colour = 2;
        this.Grades = new int[]{2, 3, 4, 5};
    }
}

public class Type4 extends Pipe {

    public Type4() {

        this.InnerInsulation = true;
        this.OuterReinforcement = false;
        this.Colour = 2;
        this.Grades = new int[]{2, 3, 4, 5};
    }
}

public class Type5 extends Pipe {

    public Type5() {

        this.InnerInsulation = true;
        this.OuterReinforcement = true;
        this.Colour = 2;
        this.Grades = new int[]{3, 4, 5};
    }
}

I want to create a method within the pipe abstract class to compare values with each value and if values match of the types, to return the type and if not, to say order invalid.

All help appreciated.

[Fubarable]

Consider making validateOrder a true method -- with a valid return type, likely a boolean. Make it abstract and thereby force all subclasses to implement the method. By the way, you only have one abstract type here, so it makes no sense to state that you want to validate input with "each" abstract type.