在另一个构造函数中调用一个构造函数（并从cons.1获取修改后的变量）

Question

I searched the web but did not find my answers. Here is my question. The goal here is to use my verifications (if codeForme<0 || codeforme>9)... etc only in my first constructor, because my two other constructors are calling the first one.

But, when i enter for example codeforme = 20 in my second constructor, it is not modified as it should be after running the first constructor. I know the problem is probably from the this.codeForme = forme because it takes my parameter's forme instead of the codeForme from the first. There should be an easy way, thanks!

Here is my code so far:

public class carteMere {

    // variable(s) de classe s'il y a lieu
    private static int identifiant = 0;
    // variable(s) d'instance s'il y a lieu
    private String marque;
    private int codeForme = 0;
    private int capaciteMaxMemoire = 8;
    private int memoireInstalle = 0;
    private int codeCarte;
    // constructeur(s) s'il y a lieu
    public carteMere( String marque,
                      int codeForme,
                      int capaciteMaxMemoire,
                      int memoireInstalle) {
        this.marque = marque;
        this.identifiant = identifiant+1;
        this.codeCarte=this.identifiant;
        if(codeForme < 0 || codeForme > 9){
            codeForme = 0;
        }
        if(capaciteMaxMemoire<=0){
            capaciteMaxMemoire = 8;
        }
        if(memoireInstalle < 0){
            memoireInstalle = 0;
        }else if (memoireInstalle> capaciteMaxMemoire){
            memoireInstalle = capaciteMaxMemoire;
        }
        codeForme = codeForme;
        capaciteMaxMemoire = capaciteMaxMemoire;
        memoireInstalle = memoireInstalle;
    }
    public carteMere(int forme, int capaciteMax, int memoireInstalle){
        this("ASUS", forme, capaciteMax, memoireInstalle);
        this.codeForme = forme;
        this.capaciteMaxMemoire = capaciteMax;
        this.memoireInstalle = memoireInstalle;
        this.codeCarte=this.identifiant;
    }
    public carteMere(int codeForme, int memoireInstalle){
        this(codeForme, 8, memoireInstalle);
        this.codeForme=codeForme;
        this.memoireInstalle=memoireInstalle;
        this.identifiant = identifiant;
        this.codeCarte=this.identifiant;
    }

Edit:

If I do: carte1 = new carteMere(10, 8);

Then I inspect carte1, the codeForme is 10, and it should be 0 because it should have been modifed in the 1st constructor.

Answer 1

Use this to qualify your instance variables as you have done for marque , indentifiant , and codeCarte . Also use else on your if s to assign the variable the normal value if not outside the validation range. Eg for codeForme :

if(codeForme < 0 || codeForme > 9) {
    this.codeForme = 0;
}
else {
    this.codeForme = codeForme;
}

And similarly for capaciteMaxMemoire and memoireInstalle .